Sorption of lead ions from aqueous solution using tree fern as a sorbent

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题名:	Sorption of lead ions from aqueous solution using tree fern as a sorbent
作者:	Ho, Y.S.;Chiu, W.T.;Hsu, C.S.;Huang, C.T.
贡献者:	Department of Biotechnology
关键词:	Isotherm;Kinetics;Pseudo-second order mechanism;Lead;Tree fern
日期:	2004
上传时间:	2009-12-15 05:24:37 (UTC+0)
出版者:	Asia University
摘要:	This study is on sorption of lead ions on an agricultural by-product, tree fern. Equilibrium isotherms have been measured and modeled. The equilibrium sorption capacity of lead(II) was determined from the Langmuir isotherm and found to be 40.0 mg/g. Based on the assumption of the pseudo-second order mechanism, a batch sorption model was developed to predict the rate constant of sorption, the equilibrium sorption capacity and the initial sorption rate with the effect of initial lead(II) concentration and temperature. The sorption rate was found to increase with temperature, and an activation energy of approximately 87 kJ/mol was determined from the pseudo-second order rate constants. The findings of this investigation suggest that chemical sorption plays a role in controlling the sorption rate.
關聯:	Hydrometallurgy 73(1-2): 55-61
显示于类别:	[生物科技學系] 期刊論文

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