Efficient removal of disinfection by-products precursors and inhibition of bacterial detachment by strong interaction of EPS with coconut shell activated carbon in ozone/biofiltration

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Efficient removal of disinfection by-products precursors and inhibition of bacterial detachment by strong interaction of EPS with coconut shell activated carbon in ozone/biofiltration
	Xing, Xueci; Li, Tong; Bi, Zhihao; Qi, Peng; Li, Zesong; Wang, Haibo; Lyu, Lai; Gao, Yaowen; Hu, Chun
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2020-06-15
卷号	392 页码:1-2
关键词	Disinfection by-products (DBPs) Ozone Biological activated carbon (BAC) Coconut shell Biofilms
ISSN号	0304-3894
英文摘要	The change of water quality was investigated in pilot-scale ozone-biological activated carbon (O-3-BAC) filters using an emerging coconut shell-based granular activated carbon (CAC) or traditional granular activated carbon (GAC), respectively. More dissolved organic carbon (DOC) and disinfection by-products (DBPs) precursors were removed, meanwhile, less microbes, less metabolites and smaller microbial clusters were detected in the effluent of CAC compared with GAC. Sequentially, lower DBPs formation and higher disinfection efficiency were achieved in drinking water distribution systems (DWDSs). Furthermore, it was observed that extracellular electron transfer was enhanced in the attached biofilms of CAC, hence improving the microbial metabolic activity and biological removal of DOC. The results were attributed to the strong interaction of extracellular polymeric substances (EPS) with highly graphitized CAC. In addition, CAC resulted in totally different EPS in attached biofilms with superior characteristics including stronger viscosity, higher flocculating efficiency, mechanical stability and numerous binding sites for bacterial cells. Consequently, a wide range of compact inter-connected biofilms formed on the surface of CAC and exhibited certain binding effect for microbial flocs and metabolites. Therefore, CAC resulted in higher microbial metabolic activity and lower release of microbes and metabolites, which was beneficial to maintain water quality safety in downstream DWDSs.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45280]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Xing, Xueci,Li, Tong,Bi, Zhihao,et al. Efficient removal of disinfection by-products precursors and inhibition of bacterial detachment by strong interaction of EPS with coconut shell activated carbon in ozone/biofiltration[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,392:1-2.
APA	Xing, Xueci.,Li, Tong.,Bi, Zhihao.,Qi, Peng.,Li, Zesong.,...&Hu, Chun.(2020).Efficient removal of disinfection by-products precursors and inhibition of bacterial detachment by strong interaction of EPS with coconut shell activated carbon in ozone/biofiltration.JOURNAL OF HAZARDOUS MATERIALS,392,1-2.
MLA	Xing, Xueci,et al."Efficient removal of disinfection by-products precursors and inhibition of bacterial detachment by strong interaction of EPS with coconut shell activated carbon in ozone/biofiltration".JOURNAL OF HAZARDOUS MATERIALS 392(2020):1-2.