【摘要】 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。更多还原

【Abstract】 The dsorption properties of modified chitosan for nickel ion in wastewater was investigted using in-situ coprecipitation method.The effects of amount of absorbent,time and temperature on the adsorption rate were investigated.The results showed that the adsorption capacity of chitosan was reached to balance at 60 min.The kinetics of the interactions showed better agreement with the pseudo second-order kinetics.The adsorption of nickel ion onto chitosan was exothermic,the adsorption rate increased with the increase of temperature.更多还原