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A study on the adsorption of chromium on laterite from Guizhou Province,China
GYIG-IR管理员
2009
Source PublicationChinese Journal of Geochemistry》 , , :
Volume28Issue:2Pages:220-226
AbstractThe adsorption behaviors of Cr(VI) on laterite from Guizhou Province were studied in this paper, and the adsorption mechanism was discussed as well. Results showed that different mineral compositions in the laterite would cause differences in the capacity of laterite to absorb Cr(VI). Gibbsite, iron oxide minerals and non-crystalloids are the main contributors to enhancing the capacity of laterite to absorb Cr(VI). The pH of the solution is an important factor affecting the adsorption of Cr(VI) on laterite. Acidic environment (pH=2-5) is favorable to the adsorption of Cr(VI). The amount of adsorbed Cr(VI) decreases with increasing pH of the solution. With increasing initial concentrations of Cr(VI), the amount of adsorbed Cr(VI) increases first, and then decreases. The optimal adsorption concentration of Cr(VI) on laterite is 250 μg/mL. The adsorption of Cr(VI) on laterite is a rapid process, about 80% Cr(VI) will be adsorbed within 2 hours. And the adsorption of Cr(VI) on kaolinite is a slow process.
Subject Area环境地球化学
Indexed ByEI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/6763
Collection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
Recommended Citation
GB/T 7714
GYIG-IR管理员. A study on the adsorption of chromium on laterite from Guizhou Province,China[J]. Chinese Journal of Geochemistry》 , , :,2009,28(2):220-226.
APA GYIG-IR管理员.(2009).A study on the adsorption of chromium on laterite from Guizhou Province,China.Chinese Journal of Geochemistry》 , , :,28(2),220-226.
MLA GYIG-IR管理员."A study on the adsorption of chromium on laterite from Guizhou Province,China".Chinese Journal of Geochemistry》 , , : 28.2(2009):220-226.
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