Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media
Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contam...
Ausführliche Beschreibung
Autor*in: |
Cheng, Xuyi [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2021 |
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Schlagwörter: |
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Anmerkung: |
© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 |
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Übergeordnetes Werk: |
Enthalten in: Journal of soils and sediments - Berlin : Springer, 2001, 22(2021), 1 vom: 25. Sept., Seite 196-207 |
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Übergeordnetes Werk: |
volume:22 ; year:2021 ; number:1 ; day:25 ; month:09 ; pages:196-207 |
Links: |
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DOI / URN: |
10.1007/s11368-021-03072-0 |
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Katalog-ID: |
SPR045908265 |
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245 | 1 | 0 | |a Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media |
264 | 1 | |c 2021 | |
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520 | |a Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract | ||
650 | 4 | |a Chromium |7 (dpeaa)DE-He213 | |
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650 | 4 | |a @CMC |7 (dpeaa)DE-He213 | |
650 | 4 | |a Transport |7 (dpeaa)DE-He213 | |
650 | 4 | |a Soil remediation |7 (dpeaa)DE-He213 | |
650 | 4 | |a Tea polyphenols (TPs) |7 (dpeaa)DE-He213 | |
650 | 4 | |a Carboxymethyl cellulose (CMC) |7 (dpeaa)DE-He213 | |
700 | 1 | |a Wang, Shiqi |4 aut | |
700 | 1 | |a Xu, Nan |0 (orcid)0000-0001-5996-9201 |4 aut | |
700 | 1 | |a Yang, Li |4 aut | |
700 | 1 | |a Jing, Pengcheng |4 aut | |
700 | 1 | |a Chen, Jianping |4 aut | |
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10.1007/s11368-021-03072-0 doi (DE-627)SPR045908265 (SPR)s11368-021-03072-0-e DE-627 ger DE-627 rakwb eng Cheng, Xuyi verfasserin aut Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract Chromium (dpeaa)DE-He213 TPs-nFe (dpeaa)DE-He213 @CMC (dpeaa)DE-He213 Transport (dpeaa)DE-He213 Soil remediation (dpeaa)DE-He213 Tea polyphenols (TPs) (dpeaa)DE-He213 Carboxymethyl cellulose (CMC) (dpeaa)DE-He213 Wang, Shiqi aut Xu, Nan (orcid)0000-0001-5996-9201 aut Yang, Li aut Jing, Pengcheng aut Chen, Jianping aut Enthalten in Journal of soils and sediments Berlin : Springer, 2001 22(2021), 1 vom: 25. Sept., Seite 196-207 (DE-627)373325134 (DE-600)2125896-X 1614-7480 nnns volume:22 year:2021 number:1 day:25 month:09 pages:196-207 https://dx.doi.org/10.1007/s11368-021-03072-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_183 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 22 2021 1 25 09 196-207 |
spelling |
10.1007/s11368-021-03072-0 doi (DE-627)SPR045908265 (SPR)s11368-021-03072-0-e DE-627 ger DE-627 rakwb eng Cheng, Xuyi verfasserin aut Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract Chromium (dpeaa)DE-He213 TPs-nFe (dpeaa)DE-He213 @CMC (dpeaa)DE-He213 Transport (dpeaa)DE-He213 Soil remediation (dpeaa)DE-He213 Tea polyphenols (TPs) (dpeaa)DE-He213 Carboxymethyl cellulose (CMC) (dpeaa)DE-He213 Wang, Shiqi aut Xu, Nan (orcid)0000-0001-5996-9201 aut Yang, Li aut Jing, Pengcheng aut Chen, Jianping aut Enthalten in Journal of soils and sediments Berlin : Springer, 2001 22(2021), 1 vom: 25. Sept., Seite 196-207 (DE-627)373325134 (DE-600)2125896-X 1614-7480 nnns volume:22 year:2021 number:1 day:25 month:09 pages:196-207 https://dx.doi.org/10.1007/s11368-021-03072-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_183 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 22 2021 1 25 09 196-207 |
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10.1007/s11368-021-03072-0 doi (DE-627)SPR045908265 (SPR)s11368-021-03072-0-e DE-627 ger DE-627 rakwb eng Cheng, Xuyi verfasserin aut Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract Chromium (dpeaa)DE-He213 TPs-nFe (dpeaa)DE-He213 @CMC (dpeaa)DE-He213 Transport (dpeaa)DE-He213 Soil remediation (dpeaa)DE-He213 Tea polyphenols (TPs) (dpeaa)DE-He213 Carboxymethyl cellulose (CMC) (dpeaa)DE-He213 Wang, Shiqi aut Xu, Nan (orcid)0000-0001-5996-9201 aut Yang, Li aut Jing, Pengcheng aut Chen, Jianping aut Enthalten in Journal of soils and sediments Berlin : Springer, 2001 22(2021), 1 vom: 25. Sept., Seite 196-207 (DE-627)373325134 (DE-600)2125896-X 1614-7480 nnns volume:22 year:2021 number:1 day:25 month:09 pages:196-207 https://dx.doi.org/10.1007/s11368-021-03072-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_183 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 22 2021 1 25 09 196-207 |
allfieldsGer |
10.1007/s11368-021-03072-0 doi (DE-627)SPR045908265 (SPR)s11368-021-03072-0-e DE-627 ger DE-627 rakwb eng Cheng, Xuyi verfasserin aut Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract Chromium (dpeaa)DE-He213 TPs-nFe (dpeaa)DE-He213 @CMC (dpeaa)DE-He213 Transport (dpeaa)DE-He213 Soil remediation (dpeaa)DE-He213 Tea polyphenols (TPs) (dpeaa)DE-He213 Carboxymethyl cellulose (CMC) (dpeaa)DE-He213 Wang, Shiqi aut Xu, Nan (orcid)0000-0001-5996-9201 aut Yang, Li aut Jing, Pengcheng aut Chen, Jianping aut Enthalten in Journal of soils and sediments Berlin : Springer, 2001 22(2021), 1 vom: 25. Sept., Seite 196-207 (DE-627)373325134 (DE-600)2125896-X 1614-7480 nnns volume:22 year:2021 number:1 day:25 month:09 pages:196-207 https://dx.doi.org/10.1007/s11368-021-03072-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_183 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 22 2021 1 25 09 196-207 |
allfieldsSound |
10.1007/s11368-021-03072-0 doi (DE-627)SPR045908265 (SPR)s11368-021-03072-0-e DE-627 ger DE-627 rakwb eng Cheng, Xuyi verfasserin aut Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract Chromium (dpeaa)DE-He213 TPs-nFe (dpeaa)DE-He213 @CMC (dpeaa)DE-He213 Transport (dpeaa)DE-He213 Soil remediation (dpeaa)DE-He213 Tea polyphenols (TPs) (dpeaa)DE-He213 Carboxymethyl cellulose (CMC) (dpeaa)DE-He213 Wang, Shiqi aut Xu, Nan (orcid)0000-0001-5996-9201 aut Yang, Li aut Jing, Pengcheng aut Chen, Jianping aut Enthalten in Journal of soils and sediments Berlin : Springer, 2001 22(2021), 1 vom: 25. Sept., Seite 196-207 (DE-627)373325134 (DE-600)2125896-X 1614-7480 nnns volume:22 year:2021 number:1 day:25 month:09 pages:196-207 https://dx.doi.org/10.1007/s11368-021-03072-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_183 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 22 2021 1 25 09 196-207 |
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Enthalten in Journal of soils and sediments 22(2021), 1 vom: 25. Sept., Seite 196-207 volume:22 year:2021 number:1 day:25 month:09 pages:196-207 |
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Chromium TPs-nFe @CMC Transport Soil remediation Tea polyphenols (TPs) Carboxymethyl cellulose (CMC) |
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Cheng, Xuyi @@aut@@ Wang, Shiqi @@aut@@ Xu, Nan @@aut@@ Yang, Li @@aut@@ Jing, Pengcheng @@aut@@ Chen, Jianping @@aut@@ |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR045908265</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230509101054.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">220107s2021 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s11368-021-03072-0</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR045908265</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s11368-021-03072-0-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Cheng, Xuyi</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2021</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). 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|
author |
Cheng, Xuyi |
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Cheng, Xuyi misc Chromium misc TPs-nFe misc @CMC misc Transport misc Soil remediation misc Tea polyphenols (TPs) misc Carboxymethyl cellulose (CMC) Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media |
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Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media Chromium (dpeaa)DE-He213 TPs-nFe (dpeaa)DE-He213 @CMC (dpeaa)DE-He213 Transport (dpeaa)DE-He213 Soil remediation (dpeaa)DE-He213 Tea polyphenols (TPs) (dpeaa)DE-He213 Carboxymethyl cellulose (CMC) (dpeaa)DE-He213 |
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misc Chromium misc TPs-nFe misc @CMC misc Transport misc Soil remediation misc Tea polyphenols (TPs) misc Carboxymethyl cellulose (CMC) |
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Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media |
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Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media |
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enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media |
title_auth |
Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media |
abstract |
Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 |
abstractGer |
Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 |
abstract_unstemmed |
Purpose In order to reduce the hazards of Cr(VI) to environment, the novel nano-zero valent iron composite was synthesized via green method for enhanced transport and Cr(VI) remediation of engineered materials, which are required for effective in situ remediation in soil and underground water contaminated by heavy metals. Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. The transport behavior can be well simulated using the first-order irreversible attachment coefficients obtained from a two-site kinetic retention model fitting the breakthrough curves of TPs-$ nFe^{0} $@CMC in porous media. The TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) showed the increased Cr(VI) remediation capacity after modified by CMC, which was 153.7 mg $ g^{−1} $ in solution and 76.22 mg $ g^{−1} $ in soil at pH 6.0. The enhanced transportability and remediation capacity might be attributed to the synergistic effects of TPs and CMC with the best mass ratio, in that the TPs covering around the $ Fe^{0} $ cores and the large-scope strain structure of CMC protected $ nFe^{0} $ from oxidation and aggregation, and subsequently the unwrapped TP-coverage facilitated the generation of $ Fe^{2+} $ and the massively exposed reaction sites to adsorption and reduction of Cr(VI). Conclusions Our findings benefit the knowledge of green synthesized TPs-$ nFe^{0} $@CMC (CMC/Fe = 0.1) composites mediated by CMC and TPs as a low-cost, “green”, and effective material with the sufficient mobility in the subsurface for the effective in situ remediation of Cr(VI). Graphical abstract © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 |
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Enhanced transport and chromium remediation of nano-zero valent iron modified by tea polyphenol extracts and carboxymethyl cellulose in water–soil media |
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Materials and methods The TPs-$ nFe^{0} $CMC composite series with different synthesis ratios of CMC versus Fe (0.05, 0.1, and 1) were prepared by using tea polyphenols (TPs) extracted from green tea as a reductant, mediated by carboxymethyl cellulose (CMC) to reduce iron sulfate. The column and batch experiments were conducted for investigating the transport of TPs-$ nFe^{0} $@CMC composite series and their Cr(VI) remediation capacity at various ionic strengths (ISs, 0.1–10 mM) of NaCl solution in water/soil system. Results and discussion The varying ratios of CMC/Fe and the ISs showed the significant effect on the enhanced transportability of TPs-$ nFe^{0} $@CMC (compared with TPs-$ nFe^{0} $ without CMC). With the increase in CMC/Fe synthesis ratios, the suspensibility of TPs-$ nFe^{0} $@CMC increased and then decreased; while the high IS clearly inhibited the particle mobility. 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score |
7.400872 |