磁性氧化石墨烯对水中镍的吸附研究

Adsorption of Nickel Ion by Magnetic Graphene Oxide in Wastewater

摘要: 本文主要研究磁性氧化石墨烯对水体中Ni²⁺的吸附行为以及不同吸附条件下对镍吸附效果的影响。通过一系列吸附平衡实验，探究吸附剂投加量、吸附时间、温度、pH、初始浓度等对镍吸附效果的影响。实验结果表明，在5 mg/L的Ni²⁺废水中，磁性氧化石墨烯的最佳投加量为0.06 g，吸附平衡时间为120 min，在介质pH 6.0~8.0时有比较好的吸附效果。在溶液初始pH为6.0，MGO的浓度为0.3 g/L时，Ni²⁺的去除率达到93.95%，MGO的最大吸附量为19.05 mg/g。

Abstract: The adsorption behavior of magnetic graphene oxide on Ni²⁺ and the effect of different adsorption conditions were studied in wastewater. Through a series of adsorption equilibrium experiments, the effects of adsorbent dosage, adsorption time, temperature, pH value and initial concentration on Ni²⁺ adsorption were investigated. The results show that the optimum dosage of magnetic graphene oxide is 0.06 g, the adsorption equilibrium time is 120 min, and the adsorption effect is better when the medium pH is 6.0 - 8.0. When the initial pH was 6.0 and the concentration of MGO was 0.3 g/L, the removal rate of Ni²⁺ was 93.95%, and the maximum adsorption capacity of MGO was 19.05 mg/g.