复配修饰新疆灰漠土对Cd^(2+)的吸附性能研究

Adsorption Characteristics of Cd^(2+)on Combined Modified Xinjiang Gray Desert Soil with BS-12 and SDS

选用了两性离子型表面活性剂BS和阴离子型表面活性剂SDS,按照不同比例量配比,对新疆灰漠土进行了修饰,制备了8种修饰土样,以未经修饰的原土样(CK)为对照,在同样条件下分别对重金属离子Cd^(2+)的吸附性能进行了测试,通过Langmuir等温吸附模型描述Cd^(2+)在灰漠土中的吸附特征,结果表明以两性-阴离子表面活性剂体系复配修饰新疆灰漠土能够显著提升其对重金属离子Cd^(2+)的吸附性能。

BS and SDS were selected to modify the grey desert soil in Xinjiang according to different proportions,and eight kinds of modified soil samples were prepared.The adsorption performance of Cd^(2+)was tested under the same conditions with the original unmodified soil sample(CK)as the control,and the adsorption characteristics of Cd^(2+)in the grey desert soil were described through the Langmuir isotherm adsorption model,The results indicate that the modification of Xinjiang gray desert soil with a combination of amphoteric anionic surfactant system can significantly improve its adsorption performance for Cd^(2+).