Elucidating the effect of different desorbents on naphthalene desorption and degradation : Performance and kinetics investigation
Copyright © 2022 Elsevier B.V. All rights reserved..
In this work, the effect of different desorbents (low molecular weight organic acids (LMWOAs), surfactants, and inorganic salts) on naphthalene (NAP) desorption in soil was investigated, and the results showed that NAP desorption pattern fitted the pseudo-second-order kinetics. The addition of LMWOAs, especially citric acid (CA), could stimulate the reactive oxygen species (ROS) generation and NAP degradation in Fe(II) activated persulfate (PS) system, while the presence of surfactants and CaCl2 could inhibit the NAP removal due to the competitive consumption of ROS. The maximum removal of NAP was 97.5% within 120 min at the PS/Fe(II)/CA/NAP molar ratio of 15/5/1/1, and the pseudo-first-order kinetic constant of NAP removal increased from 0.0110 min-1 to 0.0783 min-1 with the addition of CA. Compared with surfactants and inorganic salts, LMWOAs, especially CA, were more suitable as desorbent in soil washing coupled with in situ chemical oxidation technique. Moreover, 1.86 mg L-1 desorbed amount and 36.1% removal of NAP from soil could be obtained with the presence of 1 mM CA. Finally, the significant removal of NAP and other contaminants (phenanthrene, fluoranthene, and benzene series) in actual groundwater could provide theoretical basis and technical support for the remediation of organic contaminated sites with desorbents.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:434 |
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| Enthalten in: |
Journal of hazardous materials - 434(2022) vom: 15. Juli, Seite 128803 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zeng, Guilu [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 17.05.2022 Date Revised 19.05.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jhazmat.2022.128803 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM339352108 |
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| 041 | |a eng | ||
| 100 | 1 | |a Zeng, Guilu |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Elucidating the effect of different desorbents on naphthalene desorption and degradation |b Performance and kinetics investigation |
| 264 | 1 | |c 2022 | |
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| 500 | |a Date Completed 17.05.2022 | ||
| 500 | |a Date Revised 19.05.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2022 Elsevier B.V. All rights reserved. | ||
| 520 | |a In this work, the effect of different desorbents (low molecular weight organic acids (LMWOAs), surfactants, and inorganic salts) on naphthalene (NAP) desorption in soil was investigated, and the results showed that NAP desorption pattern fitted the pseudo-second-order kinetics. The addition of LMWOAs, especially citric acid (CA), could stimulate the reactive oxygen species (ROS) generation and NAP degradation in Fe(II) activated persulfate (PS) system, while the presence of surfactants and CaCl2 could inhibit the NAP removal due to the competitive consumption of ROS. The maximum removal of NAP was 97.5% within 120 min at the PS/Fe(II)/CA/NAP molar ratio of 15/5/1/1, and the pseudo-first-order kinetic constant of NAP removal increased from 0.0110 min-1 to 0.0783 min-1 with the addition of CA. Compared with surfactants and inorganic salts, LMWOAs, especially CA, were more suitable as desorbent in soil washing coupled with in situ chemical oxidation technique. Moreover, 1.86 mg L-1 desorbed amount and 36.1% removal of NAP from soil could be obtained with the presence of 1 mM CA. Finally, the significant removal of NAP and other contaminants (phenanthrene, fluoranthene, and benzene series) in actual groundwater could provide theoretical basis and technical support for the remediation of organic contaminated sites with desorbents | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Contaminated site remediation | |
| 650 | 4 | |a Degradation mechanism | |
| 650 | 4 | |a Desorbent | |
| 650 | 4 | |a Desorption kinetics | |
| 650 | 4 | |a Naphthalene | |
| 650 | 7 | |a Acids |2 NLM | |
| 650 | 7 | |a Ferrous Compounds |2 NLM | |
| 650 | 7 | |a Naphthalenes |2 NLM | |
| 650 | 7 | |a Reactive Oxygen Species |2 NLM | |
| 650 | 7 | |a Salts |2 NLM | |
| 650 | 7 | |a Soil |2 NLM | |
| 650 | 7 | |a Surface-Active Agents |2 NLM | |
| 650 | 7 | |a Citric Acid |2 NLM | |
| 650 | 7 | |a 2968PHW8QP |2 NLM | |
| 700 | 1 | |a Yang, Rumin |e verfasserin |4 aut | |
| 700 | 1 | |a Tian, Shuang |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Zelong |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Qi |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Xiu |e verfasserin |4 aut | |
| 700 | 1 | |a Fu, Rongbing |e verfasserin |4 aut | |
| 700 | 1 | |a Lyu, Shuguang |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Journal of hazardous materials |d 1998 |g 434(2022) vom: 15. Juli, Seite 128803 |w (DE-627)NLM093662688 |x 1873-3336 |7 nnns |
| 773 | 1 | 8 | |g volume:434 |g year:2022 |g day:15 |g month:07 |g pages:128803 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.jhazmat.2022.128803 |3 Volltext |
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