화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.9, No.4, 403-406, October, 2003
Biosorption of Cadmium and Copper Ions by Trichoderma reesei RUT C30
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The heavy metal adsorption and desorption characteristics of Trichoderma reesei RUT C30 were investigated. The fungal cells were prepared for metal adsorption by NaOH treatment, and the concentrations of cadmium and copper ions were analyzed using an atomic absorption spectrophotometer. The desorption capabilities of HNO3, HCl, CH3COOH, ddH2O, NH4OH, NaOH, and NaCl were also examined. The acidic desorbents removed more than 90% of the loaded cadmium from the cells. A higher fraction of the cadmium ion than the copper ion was recovered by desorption. At a very low pH (pH 1-2), the adsorption of heavy metals decreased, and the cells could be reused after desorption and NaOH treatment.
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