Heavy metal removal by biosorption using Phanerochaete chrysosporium |
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Authors: | Gopal M Pakshirajan K Swaminathan T |
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Institution: | (1) Biotechnology Research Centre, Department of Chemical Engineering, Indian Institute of Technology Madras, 600 036 Chennai, India |
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Abstract: | Biosorption using microbial cells as adsorbents is being seen as a cost-effective method for the removal of heavy metals from
wastewaters. Biosorption studies with Phanerochaete chrysosporium were performed for copper (II), lead (II), and cadmium (II) to evaluate the effectiveness and to optimize the operational
parameters using response surface methodology. The operational parameters chosen were initial metal ion concentration, pH,
and biosorbent dosage. Using this method, the metal removal could be correlated to the operational parameters, and their values
were optimized. The results showed fairly high adsorptive capacities for all the metals within the settings of the operational
parameters. The removal efficiencies followed the order Pb>Cu>Cd. As a general trend, metal removal efficiency decreased as
the initial metal ion concentration increased, and the results fitted the Langmuir and Freundlich isotherms well. |
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Keywords: | Biosorption Phanerochaete chrysosporium heavy metals heavy metal removal response surface methodology adsorptive capacity |
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