中文摘要：

首先采用静电纺丝工艺制备壳聚糖纳米纤维膜并优化了其制备条件,将制备的纳米纤维膜协同电动技术对土壤中的重金属(Cu、Cr)进行了修复.结果表明,纳米纤维膜制备的优化条件为:m(壳聚糖CS)/m(聚乙烯醇PVA)为20:80,乙酸质量浓度为20%,混合溶液质量分数为8%;所制备的纳米纤维膜平均直径为37.11nm,对金属的吸附平衡时间为4h.单一的电动修复来处理土壤中的重金属效率较低,Cu和Cr的去除效率仅为34.9%和11.7%;采用电动技术协同壳聚糖纳米纤维膜能显著提高重金属的去除效率,二者的去除效率分别达到了82%和91%.

英文摘要：

Chitosan nano-fiber membrane was fabricated by electrospinning under optimized parameters and the preparednano-fiber membrane coupled with electrokinetics (EK) were used to remediate soils contaminated by heavy metals (Cuand Cr). Results showed that the optimum parameters for fabricating membrane were as follows: weight ratio ofchitosan/polyvinyl alcohol was 20/80, acetic acid concentration was 20% and the mixed solution concentration was 8%.The average diameter of the prepared nano fiber membrane was 37.11nm and the adsorption equilibrium of CS /PVA formetal ions was 4h.Soil remediation for heavy metals efficiency of single electrokinetic process was low, reached only34.9% and 11.7%. The efficiency was greatly improved by the coupling process of EK and nano-fiber membrane andmetal removal efficiency by the coupling process attained 82% and 91%, respectively.