摘要：

This work investigates the ability of modified stalk of Ricinus communis L., an agricultural biomaterial, to remove Cu ions from aqueous solution in a batch and fixed-bed column. Batch biosorption experiments indicated that the aximum adsorption capacity calculated by Langmuir model (qmax) was 131.04 mg/g for for MMB. Three significant variables (bed height, flow and initial concentration) were selected for further optimization via response surface methodology (RSM) based on Box–Behnken model. A statistically quadratic model was constructed on basis of which the three-dimensional response surfaces were plotted.

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