Biosorption of lead by Phanerochaete chrysosporium in the form of pellets |
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Authors: | Wu Juan Li Qing-biao |
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Institution: | 1. School of Life Sciences, Anhui University, Hefei 230039, China. 2. Department of Chemical Engineering,Xiamen University, Xiamen 361005, China |
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Abstract: | The growth of Phanerochaete chrysosporium(ATCC 24725) in pellets was influenced by culture time, medium pH, C/N, surfactant concentration, spore number in inoculum, and shaking rate. The removal of Pb2+ from aqueous solution by this kind of mycelial pellets was studied. The results indicated that many factors affected biosorption. These factors included pH, Pb2+ concentration, co-ion, adsorption time, and chemical pretreatments of biomass. Under optimum biosorption conditions(pH 4.5, 27 degrees C, 16 h), the highest lead uptake of 108 mg/g, was observed with mycelial pellets of 1.5-1.7 mm in diameter which were treated with 0.1 mol/L NaOH solution before adsorption. Pretreatment of biomass with NaOH further increased its biosorption capacity. |
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Keywords: | Phanerochaete chrysosporium mycelial pellets lead ion biosorption |
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