An optimization strategy for highly efficient flocculation and capture of algal cells: Controlling dosing patterns of modified clay

doi:10.1016/j.eti.2023.103359

	An optimization strategy for highly efficient flocculation and capture of algal cells: Controlling dosing patterns of modified clay
	Jiang, Kaiqin 1,2,3,4; Yu, Zhiming1,2,3,4,5 ; Cao, Xihua1,2,3,4 ; Song, Xiuxian1,2,3,4 ; Zang, Xiaomiao 1,2,4; Chi, Lianbao 1,2,4; Jiang, Wenbin 1,2,4
	2023-11-01
发表期刊	ENVIRONMENTAL TECHNOLOGY & INNOVATION
ISSN	2352-1864
卷号	32 页码:12
通讯作者	Yu, Zhiming(zyu@qdio.ac.cn)
摘要	Modified clay technology is the most effective emergency treatment method for harmful algal blooms. In this study, a multiple dosing scheme was proposed to control the maximum number of flocculated algal cells in aluminium-modified clay, aiming to enhance the removal efficiency of algal cells by modified clay; simulation experiments were conducted to investigate the effect of dosing frequency on the flocculation and capture of algal cells by modified clay under the same total dosage. The mechanism analysis confirmed that the multiple dosing method maximized the number of algal cells removed per gram of clay, thereby reducing the self-flocculation of the modified clay. Compared with the single-dosing method, multiple dosing can increase the positive charge of the modified clay system by 40% and prolong the growth and residence time of flocs, which can increase the removal efficiency of algal cells by 20%-30%. Response surface methodology (RSM) was used to optimize the range of each controlled operating parameter. The experimental results showed that the maximum removal efficiency of algal cells can be achieved when the dosing frequency is controlled at 3-5 times, where the dosing interval and the concentration of stock solution are the key factors affecting the removal efficiency of algal cells under the multiple dosing method; the optimal interval time was 20-40 min, and the concentration of stock solution was 10-20 g/L. The results of this study provide a methodological reference for further improving the field application efficiency of modified clay.(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/).
关键词	Harmful algal bloom control Modified clay method Dosing patterns Effective utilization Parameter optimization
DOI	10.1016/j.eti.2023.103359
收录类别	SCI
语种	英语
资助项目	Key R&D project of Shandong Province[2019JZZY010808] ; Taishan Program of Shandong Province of 2019 ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2021QNLM040001]
WOS研究方向	Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
WOS类目	Biotechnology & Applied Microbiology ; Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:001144382900001
出版者	ELSEVIER
WOS关键词	AUREOCOCCUS-ANOPHAGEFFERENS ; BLOOMS ; SEDIMENTATION ; REMOVAL
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184381
专题	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, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室
通讯作者单位	海洋生态与环境科学重点实验室; 中国科学院海洋研究所
推荐引用方式 GB/T 7714	Jiang, Kaiqin,Yu, Zhiming,Cao, Xihua,et al. An optimization strategy for highly efficient flocculation and capture of algal cells: Controlling dosing patterns of modified clay[J]. ENVIRONMENTAL TECHNOLOGY & INNOVATION,2023,32:12.
APA	Jiang, Kaiqin.,Yu, Zhiming.,Cao, Xihua.,Song, Xiuxian.,Zang, Xiaomiao.,...&Jiang, Wenbin.(2023).An optimization strategy for highly efficient flocculation and capture of algal cells: Controlling dosing patterns of modified clay.ENVIRONMENTAL TECHNOLOGY & INNOVATION,32,12.
MLA	Jiang, Kaiqin,et al."An optimization strategy for highly efficient flocculation and capture of algal cells: Controlling dosing patterns of modified clay".ENVIRONMENTAL TECHNOLOGY & INNOVATION 32(2023):12.

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