Chitosan modification and its synergism with clay to mitigate harmful algal blooms

doi:10.1016/j.eti.2023.103028

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

	Chitosan modification and its synergism with clay to mitigate harmful algal blooms
	Li, Hui ; Yu, Zhiming 3; Cao, Xihua ; Song, Xiuxian
刊名	ENVIRONMENTAL TECHNOLOGY & INNOVATION
	2023-02-01
卷号	29 页码:13
关键词	Harmful algal blooms Chitosan modification Chitosan-based modified clay HAB mitigation Synergic mechanism
ISSN号	2352-1864
DOI	10.1016/j.eti.2023.103028
通讯作者	Yu, Zhiming(zyu@qdio.ac.cn)
英文摘要	Chitosan is a natural and eco-friendly material, often used as a flocculant in water purification; however, due to the influences of high salinity and pH, the application of chitosan in seawater has been greatly limited. In this paper, a modified chitosan (3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CTA) chitosan, denoted as CTC) was prepared by chemical modification. This greatly increased the solubility of chitosan both in deionized water and seawater, and solved the technical difficulty of applying chitosan in seawater. The structure of CTC and its solubilization on chitosan in seawater were analyzed by Zeta potential, FTIR, 13C NMR, XRD and SEM. On this basis, CTC modified clay (CTCMC) was further prepared based on the principle of mitigating harmful algal blooms with modified clay. At a CTCMC dosage of 20 mg/L, the removal efficiency of Prorocentrum donghaiense was approximately 80%, while the dosage of traditional modified clay (MCI) was 200 mg/L for the same removal efficiency. The dosage was nearly an order of magnitude less than that of the MCI, suggesting that the novel CTCMC is promising in the mitigation of harmful algal blooms. Further, the flocculation mechanism was determined based upon surface properties, and mechanical and flocculation characteristics. (c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
资助项目	Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology[2021QNLM040001] ; Taishan Scholars Climbing Program of Shandong Province of the year 2019 ; Science and Technology Major Project of Guangxi, China[AA17202020-4]
WOS关键词	FLOCCULATION ; EFFICIENCY ; PHOSPHATE ; REMOVAL
WOS研究方向	Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000926424200001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/183461]
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	Yu, Zhiming
作者单位	1.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Hui,Yu, Zhiming,Cao, Xihua,et al. Chitosan modification and its synergism with clay to mitigate harmful algal blooms[J]. ENVIRONMENTAL TECHNOLOGY & INNOVATION,2023,29:13.
APA	Li, Hui,Yu, Zhiming,Cao, Xihua,&Song, Xiuxian.(2023).Chitosan modification and its synergism with clay to mitigate harmful algal blooms.ENVIRONMENTAL TECHNOLOGY & INNOVATION,29,13.
MLA	Li, Hui,et al."Chitosan modification and its synergism with clay to mitigate harmful algal blooms".ENVIRONMENTAL TECHNOLOGY & INNOVATION 29(2023):13.