NDLI: Sorption of Pb(II) from aqueous solution by konjac glucomannan beads

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Sorption of Pb(II) from aqueous solution by konjac glucomannan beads

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Sorption of Pb(II) from aqueous solution by konjac glucomannan beads

Content Provider	Springer Nature Link
Author	Long, XiaoYan Luo, XueGang Wang, Yang Li, Zheng
Copyright Year	2009
Abstract	Konjac glucomannan beads have been investigated as metal biosorbent for Pb(II) from aqueous solutions. The effect of contact time, solution pH, initial metal concentration, and desorption were studied in batch experiments at 20°C±2°C. Maximum mental sorption was found to occur at initial pH 4.0–5.5. Kinetic studies revealed that the initial uptake was rapid and equilibrium was established in 3 h and that the data followed the prseudo-second order reaction. The equilibrium sorption data at initial pH 4.0 were described by the Langmuir and Freundlich isotherm models; however, Langmuir isotherm model has been found to provide the best correlation. The highest value of Langmuir maximum uptake (q $_{max}$) was found to be 105.71 mg·g$^{−1}$. Similar Freundlich empirical constant (K $_{F}$) was obtained to be 1.98 for lead. Adsorption-complexation may be involved in the sorption process of lead. Desorption experiments showed evidence that after two contacts neither HCl nor EDTA solutions were able to desorb lead from the konjac glucomannan beads, but the desorbtion efficacy of HCl solution was higher than EDTA solution. The results obtained show that konjac glucomannan beads may be used for the treatment of wastewater contaminated with lead.
Starting Page	223
Ending Page	226
Page Count	4
File Format	PDF
ISSN	10069321
Journal	Science in China Series E: Technological Sciences
Volume Number	52
Issue Number	1
e-ISSN	1862281X
Language	English
Publisher	SP Science in China Press
Publisher Date	2009-01-14
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	lead konjac glucomannan beads wastewater biosorption Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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