Adsorption of mercury on laterite from Guizhou Province,China

	Adsorption of mercury on laterite from Guizhou Province,China
	YU Xiaohong; ZHU Lijun; GUO Baiwei; HE Shouyang
	2008
发表期刊	Journal of Environmental Sciences
卷号	20 期号:11 页码:1328-1334
摘要	The adsorption behaviors of Hg(Ⅱ) on laterite from Guizhou Province,China,were studied and the adsorption mechanism was discussed.The results showed that different mineral compositons in the laterite will cause differences in the adsorption capacity of laterite to Hg(Ⅱ).Illite and non-crystalloids are the main contributors to enhancing the adsorption capacity of laterite to Hg(Ⅱ).The pH of the solution is an important factor affecting the adsorption of Hg(Ⅱ) on laterite.The alkalescent environment (pH 7-9) is favorable to the adsorption of Hg(Ⅱ).The amount of adsorbed Hg(Ⅱ) increases with increasing pH.When the pH reaches a certain value,the amount of the adsorbed Hg(Ⅱ) will reach the maximum level.The amount of adsorbed Hg(Ⅱ) decreases with increasing pH.The optimal pHs of laterite and kaolinite are 9 and 8,respectively.The optimal initial concentrations of Hg(Ⅱ) on laterite and kaolinite are 250 and 200 μg/ml,respectively.The adsorption isotherms were described by the Langmuir model.The adsorption of Hg(Ⅱ) on laterite is a quick process while that of Hg(Ⅱ) on kaolinite is a slow reaction.Laterite from Guizhou Province is a promising environmental material which can be used in the removal of Hg(Ⅱ) from wastewater.
关键词	Adsorption Laterite Hg(Ii) Ph Isotherm Kinetics
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/6762
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	YU Xiaohong,ZHU Lijun,GUO Baiwei,et al. Adsorption of mercury on laterite from Guizhou Province,China[J]. Journal of Environmental Sciences,2008,20(11):1328-1334.
APA	YU Xiaohong,ZHU Lijun,GUO Baiwei,&HE Shouyang.(2008).Adsorption of mercury on laterite from Guizhou Province,China.Journal of Environmental Sciences,20(11),1328-1334.
MLA	YU Xiaohong,et al."Adsorption of mercury on laterite from Guizhou Province,China".Journal of Environmental Sciences 20.11(2008):1328-1334.

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