Modified local sands for the mitigation of harmful algal blooms

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 污染过程与控制实验室

	Modified local sands for the mitigation of harmful algal blooms
	Pan, Gang 1; Chen, Jing 2; Anderson, Donald M.3
刊名	HARMFUL ALGAE
	2011-05-01
卷号	10 期号:4 页码:381-387
关键词	Chitosan Harmful Algal Bloom Modified Sands Polyaluminum Chloride (Pac) Seawater Synergistic Effect
ISSN号	1568-9883
通讯作者	Pan, G, Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 10085, Peoples R China.gpan@rcees.ac.cn ; jingchen2004126@126.com ; danderson@whoi.edu
产权排序	[Pan, Gang] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 10085, Peoples R China; [Chen, Jing] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Anderson, Donald M.] Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA
文献子类	Article
英文摘要	A new method was developed for marine harmful algal bloom (HAB) mitigation using local beach sand or silica sand modified with chitosan and polyaluminum chloride (PAC). Untreated sand was ineffective in flocculating algal cells, but 80% removal efficiency was achieved for Amphidinium carterae Hulburt and Chlorella sp. in 3 min (t(80) = 3 min) using 120 mg L-1 sand modified with 10 mg L-1 PAC and 10 mg L-1 chitosan. After several hours 92-96% removal was achieved. The t(80) for removing A. carterae using the modifiers only (PAC and chitosan combined) was 60 min and for Chlorella sp. 120 min, which are much slower than with the corresponding modified sand. Sands were critical for speeding up the kinetic processes of flocculation and sedimentation of algal flocs. PAC was helpful in forming small flocs and chitosan is essential to bridge the small flocs into large dense flocs. Chitosan was also important in inhibiting the escape of cells from the flocs. Chitosan and PAC used together as modifiers make it possible to use local beach sands for HAB mitigation in seawater. Economical and environmental concerns could be reduced through the use of sands and biodegradable chitosan, but the potential impacts of PAC need further study. (C) 2011 Elsevier B.V. All rights reserved.; A new method was developed for marine harmful algal bloom (HAB) mitigation using local beach sand or silica sand modified with chitosan and polyaluminum chloride (PAC). Untreated sand was ineffective in flocculating algal cells, but 80% removal efficiency was achieved for Amphidinium carterae Hulburt and Chlorella sp. in 3 min (t(80) = 3 min) using 120 mg L(-1) sand modified with 10 mg L(-1) PAC and 10 mg L(-1) chitosan. After several hours 92-96% removal was achieved. The t(80) for removing A. carterae using the modifiers only (PAC and chitosan combined) was 60 min and for Chlorella sp. 120 min, which are much slower than with the corresponding modified sand. Sands were critical for speeding up the kinetic processes of flocculation and sedimentation of algal flocs. PAC was helpful in forming small flocs and chitosan is essential to bridge the small flocs into large dense flocs. Chitosan was also important in inhibiting the escape of cells from the flocs. Chitosan and PAC used together as modifiers make it possible to use local beach sands for HAB mitigation in seawater. Economical and environmental concerns could be reduced through the use of sands and biodegradable chitosan, but the potential impacts of PAC need further study. (C) 2011 Elsevier B.V. All rights reserved.
学科主题	Marine & Freshwater Biology
WOS关键词	CLAY FLOCCULATION ; CYANOBACTERIAL BLOOMS ; KARENIA-BREVIS ; RED-TIDE ; CHITOSAN ; REMOVAL ; SOILS ; INVERTEBRATES ; COAGULATION ; EFFICIENCY
WOS研究方向	Marine & Freshwater Biology
语种	英语
WOS记录号	WOS:000289809600005
资助机构	Chinese Academy of Sciences [kzcx2-yw-225]
公开日期	2011-07-22
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/4902]
专题	烟台海岸带研究所_污染过程与控制实验室
作者单位	1.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 10085, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 3.Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA
推荐引用方式 GB/T 7714	Pan, Gang,Chen, Jing,Anderson, Donald M.. Modified local sands for the mitigation of harmful algal blooms[J]. HARMFUL ALGAE,2011,10(4):381-387.
APA	Pan, Gang,Chen, Jing,&Anderson, Donald M..(2011).Modified local sands for the mitigation of harmful algal blooms.HARMFUL ALGAE,10(4),381-387.
MLA	Pan, Gang,et al."Modified local sands for the mitigation of harmful algal blooms".HARMFUL ALGAE 10.4(2011):381-387.