Flocculation-Dewatering Behavior of Microalgae at Different Growth Stages under Inorganic Polymeric Flocculant Treatment: The Relationships between Algal Organic Matter and Floc Dewaterability

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	Flocculation-Dewatering Behavior of Microalgae at Different Growth Stages under Inorganic Polymeric Flocculant Treatment: The Relationships between Algal Organic Matter and Floc Dewaterability
	Xu, Guangling; Wang, Dongsheng; Zhang, Weijun; Cao, Qingwei
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2018-08-01
卷号	6 期号:8 页码:11087-11096
关键词	Microalgae Growth stages Aluminum salts coagulants Algae organic matter Floc dewaterability
ISSN号	2168-0485
文献子类	Article
英文摘要	An algal bloom is a naturally occurring phenomenon in freshwaters due to discharge of wastewater containing nitrogen and phosphate. Coagulation-flocculation was widely used in removal of cyanobacteria and algae organic matter (AOM) from water. Microalgae and AOM differ greatly in physiochemical properties at different growth stages, which are likely to have important effects on their coagulation behavior. In this study, the interacting mechanisms between polymeric aluminum chloride (PACl) and microalgae cells and AOM at the different growth stages were investigated by characterizing morphology and AOM properties of microalgae flocs formed from PACl treatment. The results showed that PACl coagulation exhibited better removal efficiency for the microalgae cells and AOM in exponential and stationary phase than that in decline phase. The protein and humic acid content in loose bound AOM (LB-AOM) were found to be key constituents affecting floc dewatering behavior, and complexation adsorption of hydrolyzed products for proteins and humic substances in LB-AOM was responsible for microalgae floc dewatering improvement. These results provide a novel insight into optimization of flocculation and dewatering of cyanobacteria at different growth stages with PACl treatment.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41145]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Xu, Guangling,Wang, Dongsheng,Zhang, Weijun,et al. Flocculation-Dewatering Behavior of Microalgae at Different Growth Stages under Inorganic Polymeric Flocculant Treatment: The Relationships between Algal Organic Matter and Floc Dewaterability[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2018,6(8):11087-11096.
APA	Xu, Guangling,Wang, Dongsheng,Zhang, Weijun,&Cao, Qingwei.(2018).Flocculation-Dewatering Behavior of Microalgae at Different Growth Stages under Inorganic Polymeric Flocculant Treatment: The Relationships between Algal Organic Matter and Floc Dewaterability.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,6(8),11087-11096.
MLA	Xu, Guangling,et al."Flocculation-Dewatering Behavior of Microalgae at Different Growth Stages under Inorganic Polymeric Flocculant Treatment: The Relationships between Algal Organic Matter and Floc Dewaterability".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 6.8(2018):11087-11096.