PMID- 33049633 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20210407 LR - 20210407 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 404 IP - Pt A DP - 2021 Feb 15 TI - Removal of micron-scale microplastic particles from different waters with efficient tool of surface-functionalized microbubbles. PG - 124095 LID - S0304-3894(20)32085-9 [pii] LID - 10.1016/j.jhazmat.2020.124095 [doi] AB - Microplastic (MP) contamination in water has garnered significantly global concerns. The MP removal particularly challenges when the particle size decreases to several microns and other contaminants co-exist. This study used the coagulative colloidal gas aphrons (CCGAs) to simultaneously remove the micron-scale MP particles (~5 microm in diameter) and dissolved organic matter (DOM). Carboxyl-modified poly-(methyl methacrylate) (PMMA) and unsurface-coated polystyrene (PS) were chosen as target MPs. Over 94% of PS particles and almost 100% of color were simultaneously removed with lower CCGA consumption than the scenarios with either contaminant in water. The PMMA removal was not as high as the PS removal since the HA polyanions could compete with the negatively-charged PMMA for CCGAs. High salinity reduced the removal of HA by changing its interfacial behaviors without impacting the MP separation. In river water or influent of wastewater treatment plant, the MP particles were almost completely eliminated whereas the DOM (tyrosine-like or tryptophan-like) was partially removed. The fluorescence quenching titration revealed that CCGAs preferably captured the free DOM and the DOM-coated MP particles through complexation interaction. The study denoted that the CCGA system could be a robust tool for efficiently and synergistically removing micron-scale MPs and DOM from different water matrixes. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Zhang, Ming AU - Zhang M AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. FAU - Yang, Junhan AU - Yang J AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. FAU - Kang, Zhen AU - Kang Z AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. FAU - Wu, Xinyou AU - Wu X AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. FAU - Tang, Linfeng AU - Tang L AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. FAU - Qiang, Zhimin AU - Qiang Z AD - Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China. FAU - Zhang, Daoyong AU - Zhang D AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. Electronic address: zhangdaodong@zjut.edu.cn. FAU - Pan, Xiangliang AU - Pan X AD - Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200926 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 SB - IM OTO - NOTNLM OT - Complexation interaction OT - Dissolved organic matter OT - Improved flotation OT - Microplastic removal OT - Surface-functionalized microbubbles EDAT- 2020/10/14 06:00 MHDA- 2020/10/14 06:01 CRDT- 2020/10/13 20:16 PHST- 2020/08/08 00:00 [received] PHST- 2020/09/20 00:00 [revised] PHST- 2020/09/23 00:00 [accepted] PHST- 2020/10/14 06:00 [pubmed] PHST- 2020/10/14 06:01 [medline] PHST- 2020/10/13 20:16 [entrez] AID - S0304-3894(20)32085-9 [pii] AID - 10.1016/j.jhazmat.2020.124095 [doi] PST - ppublish SO - J Hazard Mater. 2021 Feb 15;404(Pt A):124095. doi: 10.1016/j.jhazmat.2020.124095. Epub 2020 Sep 26.