PMID- 36609760 OWN - NLM STAT- MEDLINE DCOM- 20230405 LR - 20230405 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 30 IP - 14 DP - 2023 Mar TI - Interaction between biochar-dissolved organic matter and chlorophenols during biochar adsorption. PG - 40375-40387 LID - 10.1007/s11356-022-25083-1 [doi] AB - Biochar (BC) has been widely applied in the remediation of chlorophenols (CPs) from contaminated sites in which the role and mechanisms of BC dissolved organic matter (BDOM), as a crucial component of BC, with CPs are largely unknown and thus need to be investigated. In this study, DOM was derived from peanut hulls (PDOM) and corn stalks (CDOM) as BC sources, and the interactions between PDOM/CDOM and 2,4,6-trichlorophenol (TCP) were analysed using excitation-emission matrix spectroscopy (EEM) in combination with multiple models. EEM combined with fluorescence region integration (EEM-FRI) indicated that humic-like materials were the major materials of both PDOM and CDOM (percentage fluorescence response R(i,n) > 60%), and CDOM contained more protein- and fulvic-like materials than PDOM. Based on EEM in combination with parallel factor analysis (EEM-PARAFAC), 4 components were obtained, and the percentage decrease in maximum fluorescence intensities (F(max)) showed that the main components interacting with TCP in PDOM/CDOM were protein- and fulvic-like components (> 25%). Moreover, the modified Stern-Volmer model was used to calculate the stability constants (Log K(TCP)) of PDOM/CDOM and TCP for the first time, and the mechanism of static quenching was dominant for interacting with TCP in PDOM (Log K(TCP): 4.36-4.65) and CDOM (Log K(TCP): 3.53-4.73). Furthermore, the sequential TCP binding of fluorescent components in BDOM generally followed the order of protein-like --> short-wavelength fulvic-like --> long-wavelength fulvic-like --> humic-like components. These findings will provide a basis for screening biochar as a functional material for CP remediation applications and for understanding the environmental chemical behaviour of leached DOM during biochar application. CI - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. FAU - Zhang, Jin AU - Zhang J AD - Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China. FAU - Huang, Nannan AU - Huang N AD - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 10012, People's Republic of China. FAU - Li, Hui AU - Li H AD - Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China. FAU - Cheng, Biao AU - Cheng B AD - Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China. FAU - Zhou, Xuan AU - Zhou X AD - Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China. FAU - Wang, Chen AU - Wang C AD - Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China. wangchen0227@shu.edu.cn. LA - eng GR - 2019YFC1805800 and 2020YFC1808200/National Key Research and Development Plan/ GR - 42125706, 42107464, 42077401, 41907318, and 41877377/National Natural Science Foundation of China/ GR - 2021M702074/Project funded by the China Postdoctoral Science Foundation/ GR - 2021160/Shanghai Post-doctoral Excellence Program/ PT - Journal Article DEP - 20230107 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (biochar) RN - 0 (Dissolved Organic Matter) RN - 0 (Chlorophenols) RN - 16291-96-6 (Charcoal) RN - 0 (Humic Substances) SB - IM MH - *Dissolved Organic Matter MH - Adsorption MH - *Chlorophenols MH - Charcoal MH - Spectrometry, Fluorescence/methods MH - Factor Analysis, Statistical MH - Humic Substances/analysis OTO - NOTNLM OT - Chlorophenols OT - Dissolved organic matter OT - Interaction mechanisms OT - Sequential binding OT - Stability constants EDAT- 2023/01/08 06:00 MHDA- 2023/04/05 06:42 CRDT- 2023/01/07 16:50 PHST- 2022/09/15 00:00 [received] PHST- 2022/12/27 00:00 [accepted] PHST- 2023/04/05 06:42 [medline] PHST- 2023/01/08 06:00 [pubmed] PHST- 2023/01/07 16:50 [entrez] AID - 10.1007/s11356-022-25083-1 [pii] AID - 10.1007/s11356-022-25083-1 [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2023 Mar;30(14):40375-40387. doi: 10.1007/s11356-022-25083-1. Epub 2023 Jan 7.