Sorption and desorption of Cu and Cd by macroalgae and microalgae

	Sorption and desorption of Cu and Cd by macroalgae and microalgae
	Zhou, JL; Huang, PL ; Lin, RG
	1998
发表期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
卷号	101 期号:1 页码:67-75
文章类型	Article
摘要	The sorption and desorption of Cu and Cd by two species of brown macroalgae and five species of microalgae were studied. The two brown macroalgae, Laminaria japonica and Sargassum kjellmanianum, were found to have high capacities at pHs between 4.0 and 5.0 while for microalgae, optimum pH lay at 6.7. The presence of other cations in solution was found to reduce the sorption of the target cation, suggesting a competition for sorption sites on organisms. Sorption isotherms obeyed the Freundlich equation, suggesting involvement of a multiplicity of mechanisms and sorption sites. For the microalgae tested, Spirulina platensis had the highest capacity for Cd, followed by Nannochloropsis oculata, Phaeodactylum tricornutum, Platymonas cordifolia and Chaetoceros minutissimus. The reversibility of metal sorption by macroalgae was examined and the results show that both HCl and EDTA solutions were very effective in desorbing sorbed metal ions from macroalgae, with up to 99.5% of metals being recovered. The regenerated biomass showed undiminished sorption performance for the two metals studied, suggesting the potential of such material for use in water and wastewater treatment. (C) 1998 Elsevier Science Ltd. All rights reserved.; The sorption and desorption of Cu and Cd by two species of brown macroalgae and five species of microalgae were studied. The two brown macroalgae, Laminaria japonica and Sargassum kjellmanianum, were found to have high capacities at pHs between 4.0 and 5.0 while for microalgae, optimum pH lay at 6.7. The presence of other cations in solution was found to reduce the sorption of the target cation, suggesting a competition for sorption sites on organisms. Sorption isotherms obeyed the Freundlich equation, suggesting involvement of a multiplicity of mechanisms and sorption sites. For the microalgae tested, Spirulina platensis had the highest capacity for Cd, followed by Nannochloropsis oculata, Phaeodactylum tricornutum, Platymonas cordifolia and Chaetoceros minutissimus. The reversibility of metal sorption by macroalgae was examined and the results show that both HCl and EDTA solutions were very effective in desorbing sorbed metal ions from macroalgae, with up to 99.5% of metals being recovered. The regenerated biomass showed undiminished sorption performance for the two metals studied, suggesting the potential of such material for use in water and wastewater treatment. (C) 1998 Elsevier Science Ltd. All rights reserved.
关键词	Biosorption Macroalgae Microalgae Copper Cadmium
学科领域	Environmental Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000075884600008
引用统计	被引频次：127[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/2866
专题	海洋生态与环境科学重点实验室
作者单位	1.Univ Wales, Sch Ocean Sci, Menai Bridge LL59 5EY, Anglesey, Wales 2.Acad Sinica, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhou, JL,Huang, PL,Lin, RG. Sorption and desorption of Cu and Cd by macroalgae and microalgae[J]. ENVIRONMENTAL POLLUTION,1998,101(1):67-75.
APA	Zhou, JL,Huang, PL,&Lin, RG.(1998).Sorption and desorption of Cu and Cd by macroalgae and microalgae.ENVIRONMENTAL POLLUTION,101(1),67-75.
MLA	Zhou, JL,et al."Sorption and desorption of Cu and Cd by macroalgae and microalgae".ENVIRONMENTAL POLLUTION 101.1(1998):67-75.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
zhou-Sorption and de（986KB）			限制开放	--	浏览