Tags

Type your tag names separated by a space and hit enter

Biochar-activated persulfate for organic contaminants removal: Efficiency, mechanisms and influencing factors.
Ecotoxicol Environ Saf. 2020 Jul 15; 198:110653.EE

Abstract

Turning biomass into biochar as a multifunctional carbon-based material for water remediation has attracted much research attention. Sawdust and rice husk were selected as feedstock for biochar (BC) production, aiming to explore their performance as a catalyst to activate persulfate (PS) for degrading acid orange 7 (AO7). There was an excellent synergistic effect in the combined BC/PS system. Sawdust biochar (MX) showed a faster and more efficient performance for the AO7 degradation due to its abundant oxygen functional groups, compared to rice husk biochar (DK). In the BC/PS system, AO7 was well decolorized and mineralized. Based on the two-dimensional correlation analysis method, the azo conjugation structure and naphthalene ring of AO7 molecule changed first then benzene ring changed during the reaction. Moreover, AO7 decolorization efficiency increased with the increase of PS concentration and biochar dosage, and the deacrease of pH. Biochar deactivated after used twice. When the biochar reached its adsorption equilibrium of AO7, the AO7 could not be degraded in the BC/PS system. SO4- and OH participated in the reaction together and OH played the main role in activating PS to AO7 decolorization based on the radical scavengers experiment. All of results indicate using biochar to activate PS for degradation of AO7 contaminated water is a promising method.

Authors+Show Affiliations

College of Resources and Environment Science, Anhui Science and Technology University, Fengyang, 233100, China. Electronic address: lify@ahstu.edu.cn.School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China.College of Resources and Environment Science, Anhui Science and Technology University, Fengyang, 233100, China; Anhui Province Key Laboratory of Biochar and Cropland Pollution Prevention, Anhui Laimujia Biotechnology Co., Ltd., Huaiyuan, 233000, China.College of Resources and Environment Science, Anhui Science and Technology University, Fengyang, 233100, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32325258

Citation

Li, Feiyue, et al. "Biochar-activated Persulfate for Organic Contaminants Removal: Efficiency, Mechanisms and Influencing Factors." Ecotoxicology and Environmental Safety, vol. 198, 2020, p. 110653.
Li F, Duan F, Ji W, et al. Biochar-activated persulfate for organic contaminants removal: Efficiency, mechanisms and influencing factors. Ecotoxicol Environ Saf. 2020;198:110653.
Li, F., Duan, F., Ji, W., & Gui, X. (2020). Biochar-activated persulfate for organic contaminants removal: Efficiency, mechanisms and influencing factors. Ecotoxicology and Environmental Safety, 198, 110653. https://doi.org/10.1016/j.ecoenv.2020.110653
Li F, et al. Biochar-activated Persulfate for Organic Contaminants Removal: Efficiency, Mechanisms and Influencing Factors. Ecotoxicol Environ Saf. 2020 Jul 15;198:110653. PubMed PMID: 32325258.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biochar-activated persulfate for organic contaminants removal: Efficiency, mechanisms and influencing factors. AU - Li,Feiyue, AU - Duan,Fanglei, AU - Ji,Wenchao, AU - Gui,Xiangyang, Y1 - 2020/04/20/ PY - 2020/01/02/received PY - 2020/03/09/revised PY - 2020/04/15/accepted PY - 2020/4/24/pubmed PY - 2020/12/29/medline PY - 2020/4/24/entrez KW - Carbon material KW - Catalyst KW - Dye wastewater KW - Hydroxyl KW - Sulfate radical SP - 110653 EP - 110653 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 198 N2 - Turning biomass into biochar as a multifunctional carbon-based material for water remediation has attracted much research attention. Sawdust and rice husk were selected as feedstock for biochar (BC) production, aiming to explore their performance as a catalyst to activate persulfate (PS) for degrading acid orange 7 (AO7). There was an excellent synergistic effect in the combined BC/PS system. Sawdust biochar (MX) showed a faster and more efficient performance for the AO7 degradation due to its abundant oxygen functional groups, compared to rice husk biochar (DK). In the BC/PS system, AO7 was well decolorized and mineralized. Based on the two-dimensional correlation analysis method, the azo conjugation structure and naphthalene ring of AO7 molecule changed first then benzene ring changed during the reaction. Moreover, AO7 decolorization efficiency increased with the increase of PS concentration and biochar dosage, and the deacrease of pH. Biochar deactivated after used twice. When the biochar reached its adsorption equilibrium of AO7, the AO7 could not be degraded in the BC/PS system. SO4- and OH participated in the reaction together and OH played the main role in activating PS to AO7 decolorization based on the radical scavengers experiment. All of results indicate using biochar to activate PS for degradation of AO7 contaminated water is a promising method. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/32325258/Biochar_activated_persulfate_for_organic_contaminants_removal:_Efficiency_mechanisms_and_influencing_factors_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(20)30492-9 DB - PRIME DP - Unbound Medicine ER -