Effects of extracellular organic matter on chitosan coagulation-microfiltration harvesting of Microcystis flos-aquae

doi:10.1016/j.seppur.2022.120548

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Effects of extracellular organic matter on chitosan coagulation-microfiltration harvesting of Microcystis flos-aquae
	Zang, Xiaomiao 2,3; Zhang, Shi 1; Li, Lili 3,4; Wang, Gaohong 3; Zhang, Haiyang 3; Zhang, Xuezhi 3
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2022-04-15
卷号	287 页码:7
关键词	Microcystis flos-aquae Extracellular organic matter Filtration flux Floc characteristics Algal cake structure
ISSN号	1383-5866
DOI	10.1016/j.seppur.2022.120548
通讯作者	Zhang, Haiyang(hyzhang@ihb.ac.cn) ; Zhang, Xuezhi(zhangxuezhi@ihb.ac.cn)
英文摘要	Extracellular organic matter (EOM) is considered an important cause of membrane fouling when harvesting Microcystis cells using filtration technology. Coagulation pre-treatment has increasingly been applied as an effective method to alleviate membrane fouling. However, the effects and mechanisms of EOM on coagulationmicrofiltration of Microcystis cells remain unclear. This study investigated the coagulation-microfiltration performance of EOM-free and EOM-containing Microcystis flos-aquae and explored the effect mechanisms of EOM from the perspective of floc characteristics and deposited algal cake structure. The results showed that the presence of EOM decreased the average flux from 4256.4 L/(m(2).h) to 3378.4 L/(m(2).h) at the optimal chitosan dosage of 15.11 mg/g. Electrostatic adsorption and/or bridging between carboxyl and amino/hydroxyl groups in EOM and chitosan resulted in a loose floc structure and high compressibility of the cake layer, thus reducing the filtration performance. In addition, interception of EOM in the cake layer contributed to membrane fouling during coagulation-microfiltration. These results revealed the mechanism by which EOM hinders coagulation filtration performance, which would be helpful for the development of efficient coagulation-filtration-based microalgal harvesting techniques.
资助项目	National Program on Basic Research Project for Governmental International Scientific and Technological Innovation Cooperation of China[2018YFE0110600] ; Features Institute Service Projects from the Institute of Hydrobiology[Y85Z061601] ; National Natural Science Foundation of-China[51909258]
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000781386100006
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/178888]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Zhang, Haiyang; Zhang, Xuezhi
作者单位	1.Changjiang Inst Survey Planning Design & Res, Wuhan 430010, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zang, Xiaomiao,Zhang, Shi,Li, Lili,et al. Effects of extracellular organic matter on chitosan coagulation-microfiltration harvesting of Microcystis flos-aquae[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,287:7.
APA	Zang, Xiaomiao,Zhang, Shi,Li, Lili,Wang, Gaohong,Zhang, Haiyang,&Zhang, Xuezhi.(2022).Effects of extracellular organic matter on chitosan coagulation-microfiltration harvesting of Microcystis flos-aquae.SEPARATION AND PURIFICATION TECHNOLOGY,287,7.
MLA	Zang, Xiaomiao,et al."Effects of extracellular organic matter on chitosan coagulation-microfiltration harvesting of Microcystis flos-aquae".SEPARATION AND PURIFICATION TECHNOLOGY 287(2022):7.