Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals
methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Xie, Pengchao [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Rechteinformationen: |
Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. |
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| Schlagwörter: |
Water Pollutants, Chemical - isolation & purification Naphthols - isolation & purification |
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| Übergeordnetes Werk: |
Enthalten in: Water research - Amsterdam [u.a.] : Elsevier, Pergamon, 1967, 69(2015), Seite 223-233 |
|---|---|
| Übergeordnetes Werk: |
volume:69 ; year:2015 ; pages:223-233 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.watres.2014.11.029 |
|---|
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OLC1963549236 |
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| 520 | |a methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. | ||
| 540 | |a Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. | ||
| 650 | 4 | |a Sulfates - chemistry | |
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| 650 | 4 | |a Methanol - chemistry | |
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| 650 | 4 | |a Bornanes - isolation & purification | |
| 700 | 1 | |a Ma, Jun |4 oth | |
| 700 | 1 | |a Liu, Wei |4 oth | |
| 700 | 1 | |a Zou, Jing |4 oth | |
| 700 | 1 | |a Yue, Siyang |4 oth | |
| 700 | 1 | |a Li, Xuchun |4 oth | |
| 700 | 1 | |a Wiesner, Mark R |4 oth | |
| 700 | 1 | |a Fang, Jingyun |4 oth | |
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10.1016/j.watres.2014.11.029 doi PQ20160617 (DE-627)OLC1963549236 (DE-599)GBVOLC1963549236 (PRQ)c1862-7c10b189c7155b42c00bbfd375ea536b12a360abea475bf059cd15d4891382980 (KEY)0018203620150000069000000223removalof2mibandgeosminusinguvpersulfatecontributi DE-627 ger DE-627 rakwb eng 550 DNB Xie, Pengchao verfasserin aut Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Sulfates - chemistry Water Pollutants, Chemical - isolation & purification Hydroxyl Radical - chemistry Naphthols - isolation & purification Potassium Compounds - chemistry Methanol - chemistry Alkalies - chemistry Bornanes - isolation & purification Ma, Jun oth Liu, Wei oth Zou, Jing oth Yue, Siyang oth Li, Xuchun oth Wiesner, Mark R oth Fang, Jingyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 69(2015), Seite 223-233 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:69 year:2015 pages:223-233 http://dx.doi.org/10.1016/j.watres.2014.11.029 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25486622 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 69 2015 223-233 |
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10.1016/j.watres.2014.11.029 doi PQ20160617 (DE-627)OLC1963549236 (DE-599)GBVOLC1963549236 (PRQ)c1862-7c10b189c7155b42c00bbfd375ea536b12a360abea475bf059cd15d4891382980 (KEY)0018203620150000069000000223removalof2mibandgeosminusinguvpersulfatecontributi DE-627 ger DE-627 rakwb eng 550 DNB Xie, Pengchao verfasserin aut Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Sulfates - chemistry Water Pollutants, Chemical - isolation & purification Hydroxyl Radical - chemistry Naphthols - isolation & purification Potassium Compounds - chemistry Methanol - chemistry Alkalies - chemistry Bornanes - isolation & purification Ma, Jun oth Liu, Wei oth Zou, Jing oth Yue, Siyang oth Li, Xuchun oth Wiesner, Mark R oth Fang, Jingyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 69(2015), Seite 223-233 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:69 year:2015 pages:223-233 http://dx.doi.org/10.1016/j.watres.2014.11.029 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25486622 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 69 2015 223-233 |
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10.1016/j.watres.2014.11.029 doi PQ20160617 (DE-627)OLC1963549236 (DE-599)GBVOLC1963549236 (PRQ)c1862-7c10b189c7155b42c00bbfd375ea536b12a360abea475bf059cd15d4891382980 (KEY)0018203620150000069000000223removalof2mibandgeosminusinguvpersulfatecontributi DE-627 ger DE-627 rakwb eng 550 DNB Xie, Pengchao verfasserin aut Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Sulfates - chemistry Water Pollutants, Chemical - isolation & purification Hydroxyl Radical - chemistry Naphthols - isolation & purification Potassium Compounds - chemistry Methanol - chemistry Alkalies - chemistry Bornanes - isolation & purification Ma, Jun oth Liu, Wei oth Zou, Jing oth Yue, Siyang oth Li, Xuchun oth Wiesner, Mark R oth Fang, Jingyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 69(2015), Seite 223-233 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:69 year:2015 pages:223-233 http://dx.doi.org/10.1016/j.watres.2014.11.029 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25486622 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 69 2015 223-233 |
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10.1016/j.watres.2014.11.029 doi PQ20160617 (DE-627)OLC1963549236 (DE-599)GBVOLC1963549236 (PRQ)c1862-7c10b189c7155b42c00bbfd375ea536b12a360abea475bf059cd15d4891382980 (KEY)0018203620150000069000000223removalof2mibandgeosminusinguvpersulfatecontributi DE-627 ger DE-627 rakwb eng 550 DNB Xie, Pengchao verfasserin aut Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Sulfates - chemistry Water Pollutants, Chemical - isolation & purification Hydroxyl Radical - chemistry Naphthols - isolation & purification Potassium Compounds - chemistry Methanol - chemistry Alkalies - chemistry Bornanes - isolation & purification Ma, Jun oth Liu, Wei oth Zou, Jing oth Yue, Siyang oth Li, Xuchun oth Wiesner, Mark R oth Fang, Jingyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 69(2015), Seite 223-233 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:69 year:2015 pages:223-233 http://dx.doi.org/10.1016/j.watres.2014.11.029 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25486622 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 69 2015 223-233 |
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10.1016/j.watres.2014.11.029 doi PQ20160617 (DE-627)OLC1963549236 (DE-599)GBVOLC1963549236 (PRQ)c1862-7c10b189c7155b42c00bbfd375ea536b12a360abea475bf059cd15d4891382980 (KEY)0018203620150000069000000223removalof2mibandgeosminusinguvpersulfatecontributi DE-627 ger DE-627 rakwb eng 550 DNB Xie, Pengchao verfasserin aut Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Sulfates - chemistry Water Pollutants, Chemical - isolation & purification Hydroxyl Radical - chemistry Naphthols - isolation & purification Potassium Compounds - chemistry Methanol - chemistry Alkalies - chemistry Bornanes - isolation & purification Ma, Jun oth Liu, Wei oth Zou, Jing oth Yue, Siyang oth Li, Xuchun oth Wiesner, Mark R oth Fang, Jingyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 69(2015), Seite 223-233 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:69 year:2015 pages:223-233 http://dx.doi.org/10.1016/j.watres.2014.11.029 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25486622 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 69 2015 223-233 |
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Xie, Pengchao |
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removal of 2-mib and geosmin using uv/persulfate: contributions of hydroxyl and sulfate radicals |
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Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals |
| abstract |
methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. |
| abstractGer |
methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. |
| abstract_unstemmed |
methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin. |
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| title_short |
Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals |
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http://dx.doi.org/10.1016/j.watres.2014.11.029 http://www.ncbi.nlm.nih.gov/pubmed/25486622 |
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Ma, Jun Liu, Wei Zou, Jing Yue, Siyang Li, Xuchun Wiesner, Mark R Fang, Jingyun |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a2200265 4500</leader><controlfield tag="001">OLC1963549236</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230714161245.0</controlfield><controlfield tag="007">tu</controlfield><controlfield tag="008">160206s2015 xx ||||| 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.watres.2014.11.029</subfield><subfield code="2">doi</subfield></datafield><datafield tag="028" ind1="5" ind2="2"><subfield code="a">PQ20160617</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)OLC1963549236</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)GBVOLC1963549236</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(PRQ)c1862-7c10b189c7155b42c00bbfd375ea536b12a360abea475bf059cd15d4891382980</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(KEY)0018203620150000069000000223removalof2mibandgeosminusinguvpersulfatecontributi</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="082" ind1="0" ind2="4"><subfield code="a">550</subfield><subfield code="q">DNB</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Xie, Pengchao</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2015</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">ohne Hilfsmittel zu benutzen</subfield><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Band</subfield><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">methylisoborneol (2-MIB) and geosmin are two odor-causing compounds that are difficult to remove and the cause of many consumer complaints. In this study, we assessed the degradation of 2-MIB and geosmin using a UV/persulfate process for the first time. The results showed that both 2-MIB and geosmin could be degraded effectively using this process. The process was modeled based on steady-state assumption with respect to the odor-causing compounds and either hydroxyl or sulfate radicals. The second order rate constants for 2-MIB and geosmin reacting with the sulfate radical (SO4(-)) were estimated to be (4.2 ± 0.6) × 10(8) M(-1)s(-1) and (7.6 ± 0.6) × 10(8) M(-1)s(-1) respectively at a pH of 7.0. The contributions of the hydroxyl radical (OH) to 2-MIB and geosmin degradation were 3.5 times and 2.0 times higher, respectively, than the contribution from SO4(-) in Milli-Q water with 2 mM phosphate buffer at pH 7.0. The pseudo-first-order rate constants (ko(s)) of both 2-MIB and geosmin increased with increasing dosages of persulfate. Although pH did not affect the degradation of 2-MIB and geosmin directly, different scavenging effects of hydrogen phosphate and dihydrogen phosphate resulted in higher values of ko(s) for both 2-MIB and geosmin in acidic condition. Bicarbonate and natural organic matter (NOM) inhibited the degradation of both 2-MIB and geosmin dramatically through consuming OH and SO4(-) and were likely to be the main radical scavengers in natural waters when using UV/persulfate process to control 2-MIB and geosmin.</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sulfates - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Water Pollutants, Chemical - isolation & purification</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Hydroxyl Radical - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Naphthols - isolation & purification</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Potassium Compounds - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Methanol - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Alkalies - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Bornanes - isolation & purification</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Ma, Jun</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Liu, Wei</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zou, Jing</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Yue, Siyang</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Li, Xuchun</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Wiesner, Mark R</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Fang, Jingyun</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Water research</subfield><subfield code="d">Amsterdam [u.a.] : Elsevier, Pergamon, 1967</subfield><subfield code="g">69(2015), Seite 223-233</subfield><subfield code="w">(DE-627)129471860</subfield><subfield code="w">(DE-600)202613-2</subfield><subfield code="w">(DE-576)014841630</subfield><subfield code="x">0043-1354</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:69</subfield><subfield code="g">year:2015</subfield><subfield code="g">pages:223-233</subfield></datafield><datafield tag="856" ind1="4" ind2="1"><subfield code="u">http://dx.doi.org/10.1016/j.watres.2014.11.029</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="u">http://www.ncbi.nlm.nih.gov/pubmed/25486622</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_OLC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-UMW</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-TEC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-DE-84</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_20</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_21</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4012</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4112</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4219</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">69</subfield><subfield code="j">2015</subfield><subfield code="h">223-233</subfield></datafield></record></collection>
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