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通过原位共沉淀法研究了改性壳聚糖对废水中镍离子的吸附性能。考察了吸附剂用量、时间、温度对镍离子吸附率的影响,实验结果表明:壳聚糖对废水中镍离子的吸附在60min达到平衡,其动力学行为更好的符合准二级动力学模型,吸附过程是一个放热过程,随着温度的升高,镍离子的吸附率增大。
The in situ co-precipitation method was used to study the adsorption properties of modified chitosan to nickel ions in wastewater. The effects of adsorbent dosage, time and temperature on the nickel ion adsorption rate were investigated. The experimental results show that the adsorption of nickel ions in wastewater by chitosan reaches equilibrium in 60min, and its kinetic behavior is in good agreement with quasi-second-order kinetic model , The adsorption process is an exothermic process, with the increase of temperature, nickel ion adsorption rate increases.