Effect of pH on Lead Removal from Aqueous Solution by Fungus Mucor Indicus

Document Type : Research Paper

Authors

1 Dept. of Chemical Eng., Isfahan University of Tech., Isfahan

2 Environmental Biotech., Dept. of Chemical Eng., Isfahan University of Tech., Isfahan

3 Industrial Biotech., Dept. of Chemical Eng., Isfahan University of Tech., Isfahan

Abstract

Biological methods of metal removal from aqueous solutions, defined as biosorption, have been recommended as cheaper and more effective techniques. Biosorption of lead by dead Mucor indicus biomass treated with NaOH was studied over a range of pH. The pH plays an important role on biosorption. Low pH resulted in a decrease in the biosorption capacity. At pH 3.0 or higher, the biosorption of lead ions increased sharply. Under these conditions, optimal pH=5.5 was obtained. The Ho’s pseudo-second-order model described the biosorption kinetics, and the equilibrium data could be fitted by Langmuir isotherm equation. The pH values were increased at the end of reaction procedure.

Keywords

References

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Journal of Water and Wastewater; Ab va Fazilab ( in persian )
Volume 23, Issue 1 - Serial Number 1
Serial number:81
March and April 2012
Pages 76-83

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