PMID- 30265924 OWN - NLM STAT- MEDLINE DCOM- 20181221 LR - 20181221 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 214 DP - 2019 Jan TI - Extracellular polymeric substances (EPS) modulate adsorption isotherms between biochar and 2,2',4,4'-tetrabromodiphenyl ether. PG - 176-183 LID - S0045-6535(18)31736-3 [pii] LID - 10.1016/j.chemosphere.2018.09.081 [doi] AB - Extracellular polymeric substances (EPS), chars and persistent organic pollutants (POPs) frequently coexist in the environment. However, a knowledge gap exists regarding their interactions. Therefore, we applied 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) as a model POP to investigate the influence of bovine serum albumin (BSA) and sodium alginate (SA) - representing protein and polysaccharide components of EPS - on POP adsorption to biochars. Surface activities of tested biochars were characterised using nuclear magnetic resonance, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The adsorption capacities of BDE-47 on biochars were significantly improved by both EPS analogues: BSA at concentrations of only 5 mg L(-1) and SA at 80 mg L(-1) at c(e) = 1 S(w) BDE-47 concentration. However, 80 mg L(-1) BSA decreased the BDE-47 adsorption capacities on biochars at the tested BDE-47 concentrations. Chemisorption and pore filling mechanisms appeared to dominate the adsorption process of BDE-47 on maize straw and wheat straw biochars. After adding BSA (or SA), a hydrophobic partition effect was found to best explain the adsorption process and linearity of adsorption was enhanced. These results progress our understanding of bioavailability and migration of POPs: especially relevant to the water industry and biochar/EPS facilitated removal of these contaminants. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Liu, Guangxia AU - Liu G AD - Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Sheng, Hongjie AU - Sheng H AD - Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Fu, Yuhao AU - Fu Y AD - Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Song, Yang AU - Song Y AD - Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. FAU - Redmile-Gordon, Marc AU - Redmile-Gordon M AD - Department of Catchment Sensitive Farming, Southern Water Partnership, Natural England, Worthing BN11 1LD, UK. FAU - Qiao, Yan AU - Qiao Y AD - Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030000, China. FAU - Gu, Chenggang AU - Gu C AD - Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. FAU - Xiang, Leilei AU - Xiang L AD - Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Wang, Fang AU - Wang F AD - Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: wangfang@issas.ac.cn. LA - eng PT - Journal Article DEP - 20180917 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Alginates) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Organic Chemicals) RN - 0 (Water Pollutants, Chemical) RN - 0 (biochar) RN - 0N97R5X10X (2,2',4,4'-tetrabromodiphenyl ether) RN - 16291-96-6 (Charcoal) RN - 27432CM55Q (Serum Albumin, Bovine) SB - IM MH - *Adsorption MH - Alginates/*chemistry MH - Charcoal/*chemistry MH - Extracellular Polymeric Substance Matrix/*chemistry MH - Halogenated Diphenyl Ethers/*chemistry MH - Models, Chemical MH - Organic Chemicals/chemistry MH - Serum Albumin, Bovine/*chemistry MH - Spectrum Analysis MH - Triticum MH - Water Pollutants, Chemical/chemistry MH - Water Purification/methods MH - Zea mays OTO - NOTNLM OT - 2,2',4,4'-tetrabromodiphenyl ether OT - Adsorption OT - Biochar OT - Bovine serum albumin OT - Sodium alginate EDAT- 2018/09/29 06:00 MHDA- 2018/12/24 06:00 CRDT- 2018/09/29 06:00 PHST- 2018/05/06 00:00 [received] PHST- 2018/08/07 00:00 [revised] PHST- 2018/09/15 00:00 [accepted] PHST- 2018/09/29 06:00 [pubmed] PHST- 2018/12/24 06:00 [medline] PHST- 2018/09/29 06:00 [entrez] AID - S0045-6535(18)31736-3 [pii] AID - 10.1016/j.chemosphere.2018.09.081 [doi] PST - ppublish SO - Chemosphere. 2019 Jan;214:176-183. doi: 10.1016/j.chemosphere.2018.09.081. Epub 2018 Sep 17.