花生壳活性炭对水中Cu^(2+)的吸附研究

Adsorption of Cu^(2+) in Water by Activated Carbon Made from Peanut Shell

以氢氧化钾为活化剂,高温碳化花生壳制备活性炭,并用于吸附水中铜离子。通过单因素实验,探索了花生壳活性炭对水中Cu^(2+)离子的吸附性能,在最优条件(活性炭投加量0.6 g、40℃、2 h)下,对初始质量浓度30 mg/L的50 mL溶液进行了吸附实验。结果表明,Cu^(2+)离子去除率达96.57%。活性炭吸附水中铜离子的过程符合准二级动力学模型。

Activated carbon prepared by peanut shell as raw material and potassium hydroxide as activator with carbonization at high temperature was used to adsorb copper ions in water.The adsorption properties of peanut shell activated carbon for Cu^(2+)ion in water were studied by single factor experiment.The adsorption experiment of 50 mL solution with initial concentration of 30 mg/L was carried out under the optimal conditions(dosage of activated carbon 0.6 g,40℃,time of 2 h),and Cu^(2+)ion removal rate was 96.57%.The adsorption of copper ions onto activated carbon accorded with the quasi second-order kinetic model.