Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides

Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments,...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Huixin Xiong [verfasserIn] Jing Xu [verfasserIn] Shiqing Li [verfasserIn] Yiqun Xu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	adsorption akaganéite cr(iii) feooh iron oxyhydroxide schwertmannite

Übergeordnetes Werk:	In: Water Science and Technology - IWA Publishing, 2021, 87(2023), 5, Seite 1140-1158
Übergeordnetes Werk:	volume:87 ; year:2023 ; number:5 ; pages:1140-1158

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.2166/wst.2023.049

Katalog-ID:	DOAJ08906335X

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245	1	0	\|a Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides
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520			\|a Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.;
650		4	\|a adsorption
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allfields	10.2166/wst.2023.049 doi (DE-627)DOAJ08906335X (DE-599)DOAJ4467229883d9419bb5a4569702a17af4 DE-627 ger DE-627 rakwb eng TD1-1066 Huixin Xiong verfasserin aut Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.; adsorption akaganéite cr(iii) feooh iron oxyhydroxide schwertmannite Environmental technology. Sanitary engineering Jing Xu verfasserin aut Shiqing Li verfasserin aut Yiqun Xu verfasserin aut In Water Science and Technology IWA Publishing, 2021 87(2023), 5, Seite 1140-1158 (DE-627)319406539 (DE-600)2024780-1 19969732 nnns volume:87 year:2023 number:5 pages:1140-1158 https://doi.org/10.2166/wst.2023.049 kostenfrei https://doaj.org/article/4467229883d9419bb5a4569702a17af4 kostenfrei http://wst.iwaponline.com/content/87/5/1140 kostenfrei https://doaj.org/toc/0273-1223 Journal toc kostenfrei https://doaj.org/toc/1996-9732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2027 GBV_ILN_2360 GBV_ILN_4046 AR 87 2023 5 1140-1158
spelling	10.2166/wst.2023.049 doi (DE-627)DOAJ08906335X (DE-599)DOAJ4467229883d9419bb5a4569702a17af4 DE-627 ger DE-627 rakwb eng TD1-1066 Huixin Xiong verfasserin aut Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.; adsorption akaganéite cr(iii) feooh iron oxyhydroxide schwertmannite Environmental technology. Sanitary engineering Jing Xu verfasserin aut Shiqing Li verfasserin aut Yiqun Xu verfasserin aut In Water Science and Technology IWA Publishing, 2021 87(2023), 5, Seite 1140-1158 (DE-627)319406539 (DE-600)2024780-1 19969732 nnns volume:87 year:2023 number:5 pages:1140-1158 https://doi.org/10.2166/wst.2023.049 kostenfrei https://doaj.org/article/4467229883d9419bb5a4569702a17af4 kostenfrei http://wst.iwaponline.com/content/87/5/1140 kostenfrei https://doaj.org/toc/0273-1223 Journal toc kostenfrei https://doaj.org/toc/1996-9732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2027 GBV_ILN_2360 GBV_ILN_4046 AR 87 2023 5 1140-1158
allfields_unstemmed	10.2166/wst.2023.049 doi (DE-627)DOAJ08906335X (DE-599)DOAJ4467229883d9419bb5a4569702a17af4 DE-627 ger DE-627 rakwb eng TD1-1066 Huixin Xiong verfasserin aut Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.; adsorption akaganéite cr(iii) feooh iron oxyhydroxide schwertmannite Environmental technology. Sanitary engineering Jing Xu verfasserin aut Shiqing Li verfasserin aut Yiqun Xu verfasserin aut In Water Science and Technology IWA Publishing, 2021 87(2023), 5, Seite 1140-1158 (DE-627)319406539 (DE-600)2024780-1 19969732 nnns volume:87 year:2023 number:5 pages:1140-1158 https://doi.org/10.2166/wst.2023.049 kostenfrei https://doaj.org/article/4467229883d9419bb5a4569702a17af4 kostenfrei http://wst.iwaponline.com/content/87/5/1140 kostenfrei https://doaj.org/toc/0273-1223 Journal toc kostenfrei https://doaj.org/toc/1996-9732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2027 GBV_ILN_2360 GBV_ILN_4046 AR 87 2023 5 1140-1158
allfieldsGer	10.2166/wst.2023.049 doi (DE-627)DOAJ08906335X (DE-599)DOAJ4467229883d9419bb5a4569702a17af4 DE-627 ger DE-627 rakwb eng TD1-1066 Huixin Xiong verfasserin aut Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.; adsorption akaganéite cr(iii) feooh iron oxyhydroxide schwertmannite Environmental technology. Sanitary engineering Jing Xu verfasserin aut Shiqing Li verfasserin aut Yiqun Xu verfasserin aut In Water Science and Technology IWA Publishing, 2021 87(2023), 5, Seite 1140-1158 (DE-627)319406539 (DE-600)2024780-1 19969732 nnns volume:87 year:2023 number:5 pages:1140-1158 https://doi.org/10.2166/wst.2023.049 kostenfrei https://doaj.org/article/4467229883d9419bb5a4569702a17af4 kostenfrei http://wst.iwaponline.com/content/87/5/1140 kostenfrei https://doaj.org/toc/0273-1223 Journal toc kostenfrei https://doaj.org/toc/1996-9732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2027 GBV_ILN_2360 GBV_ILN_4046 AR 87 2023 5 1140-1158
allfieldsSound	10.2166/wst.2023.049 doi (DE-627)DOAJ08906335X (DE-599)DOAJ4467229883d9419bb5a4569702a17af4 DE-627 ger DE-627 rakwb eng TD1-1066 Huixin Xiong verfasserin aut Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.; adsorption akaganéite cr(iii) feooh iron oxyhydroxide schwertmannite Environmental technology. Sanitary engineering Jing Xu verfasserin aut Shiqing Li verfasserin aut Yiqun Xu verfasserin aut In Water Science and Technology IWA Publishing, 2021 87(2023), 5, Seite 1140-1158 (DE-627)319406539 (DE-600)2024780-1 19969732 nnns volume:87 year:2023 number:5 pages:1140-1158 https://doi.org/10.2166/wst.2023.049 kostenfrei https://doaj.org/article/4467229883d9419bb5a4569702a17af4 kostenfrei http://wst.iwaponline.com/content/87/5/1140 kostenfrei https://doaj.org/toc/0273-1223 Journal toc kostenfrei https://doaj.org/toc/1996-9732 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2027 GBV_ILN_2360 GBV_ILN_4046 AR 87 2023 5 1140-1158
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source	In Water Science and Technology 87(2023), 5, Seite 1140-1158 volume:87 year:2023 number:5 pages:1140-1158
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authorswithroles_txt_mv	Huixin Xiong @@aut@@ Jing Xu @@aut@@ Shiqing Li @@aut@@ Yiqun Xu @@aut@@
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callnumber-first	T - Technology
author	Huixin Xiong
spellingShingle	Huixin Xiong misc TD1-1066 misc adsorption misc akaganéite misc cr(iii) misc feooh misc iron oxyhydroxide misc schwertmannite misc Environmental technology. Sanitary engineering Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides
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topic_title	TD1-1066 Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides adsorption akaganéite cr(iii) feooh iron oxyhydroxide schwertmannite
topic	misc TD1-1066 misc adsorption misc akaganéite misc cr(iii) misc feooh misc iron oxyhydroxide misc schwertmannite misc Environmental technology. Sanitary engineering
topic_unstemmed	misc TD1-1066 misc adsorption misc akaganéite misc cr(iii) misc feooh misc iron oxyhydroxide misc schwertmannite misc Environmental technology. Sanitary engineering
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title	Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides
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title_full	Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides
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title_sort	chromium(iii) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides
callnumber	TD1-1066
title_auth	Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides
abstract	Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.;
abstractGer	Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.;
abstract_unstemmed	Iron oxyhydroxides for heavy metal treatment have attracted wide attention. In this work, iron oxyhydroxides of isomeric FeOOH (GpI) and tunnel-structural schwertmannite/akaganéite (GpII) were selected to study chromium (Cr(III)) adsorption removal from acidic aqueous solutions by batch experiments, under various reaction time, adsorbate/adsorbent level, pH and anions. Adsorption processes well fitted to pseudo-second-order kinetics (R2 = 0.992–0.999, except for 0.829 for Lep). Isotherm data could be fitted by Langmuir (R2 = 0.901–0.985), Freundlich (R2 = 0.884–0.985) and Temkin (R2 = 0.845–0.961) models at pH 3.7. Langmuir maximum adsorption capacities (mg/g) were 10.4−18.8 (FeOOH, except for 3.08 for Gth2) in GpI, and 20.60/43.40 (Sch-Chem/Sch-Bio) and 12.80/24.70 (Aka-Chem/Aka-Bio) in GpII. Adsorption capacities would gradually increase as Cr(III) concentrations increased within 0−40 mg/L, and could be markedly affected by the SO42- and H2PO4- anions. There were stable adsorption capacities at about pH 3.7, and then increased at pH 3.7–4.1. The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.;
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title_short	Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides
url	https://doi.org/10.2166/wst.2023.049 https://doaj.org/article/4467229883d9419bb5a4569702a17af4 http://wst.iwaponline.com/content/87/5/1140 https://doaj.org/toc/0273-1223 https://doaj.org/toc/1996-9732
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The Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results showed that adsorption mechanisms were electrostatic interaction and surface complexation. In addition, three optimal bio-/chem-schwertmannite and lepidocrocite adsorbents had good reusable properties and treating abilities of Cr(III)-polluted waters at pH 4.0. These results could provide a theoretical basis for the application of iron oxyhydroxides in removing Cr(III) from acid wastewaters. HIGHLIGHTS Iron oxyhydroxides were used for Cr(III) adsorption removal.; Cr(III) removal efficiencies were analyzed under various impact factors.; Bioschwertmannite had the highest Cr(III) adsorption capacity.; Schwertmannite and lepidocrocite had good reusability.;</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">adsorption</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">akaganéite</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">cr(iii)</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">feooh</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">iron oxyhydroxide</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">schwertmannite</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Environmental technology. 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Chromium(III) adsorption removal from acidic solutions by isomeric and tunnel-structural iron oxyhydroxides

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