花生壳活性炭吸附溶液中的铀

Adsorption of Uranium from Aqueous Solution with Peanut Shell Activated Carbon

以农林废弃物花生壳为原料、氢氧化钾为活化剂、微波为热源,制备了花生壳活性炭。以花生壳活性炭为吸附剂吸附溶液中的U(VI),考察了初始U(VI)质量浓度、活性炭加入量、溶液pH、吸附时间对U(VI)去除效果的影响。实验结果表明,在溶液中初始U(VI)质量浓度为30 mg/L、活性炭加入量为0.5 g/L、溶液pH为5.5、吸附时间为150 min的较佳条件下,活性炭对U(VI)的吸附量为56.37 mg/g,U(VI)去除率为93.94%。

The activated carbon was prepared using agricultural waste peanut shells as raw material,potassium hydroxide as activating agent and microwave as heat source.The activated carbon was used to adsorb U（VI） from aqueous solution,and the factors affecting the U（VI） removal were studied.The experimental results show that under the conditions of U（VI） mass concentration 30 mg/L,activated carbon dosage 0.5 g/L,solution pH 5.5 and adsorption time 150 min,the adsorption capacity of the activated carbon to U（VI） is 56.37 mg/g,the U（VI） removal rate is 93.94%.