用低成本的粘土矿物吸附水溶液中镉离子的研究  

Study of the Sorption of Aqueous Cadmium Solution by Low-cost Mineral Silicate

作　　者：陈晋阳[1] 黄卫[2] 

机构地区：[1]北京大学地质学系,北京100871 [2]湖南化工研究院,湖南长沙410007

出　　处：《应用科技》2002年第2期41-43,共3页Applied Science and Technology

摘　　要：对粘土矿物吸附水溶液中镉离子进行了研究。对吸附的机理、吸附剂用量、pH值、吸附剂粒径、离子强度进行了实验探讨。研究结果表明 ,Langmuir吸附等温方程式与吸附实验相符 ;溶液的pH值越大 ,越有利于吸附 ;吸附剂的粒径越小 ,吸附效果越好 ;离子强度对吸附过程的影响很小。The adsorption of aqueous cadmium solution by low_cost mineral silicate was studied. The results show that the better adsorption isotherm is Langmuir equation; the adsorption increases as the particle size of adsorbent decreases; with the increase of pH, the adsorption also increases; whereas the effect of ionic strength is little.

关 键 词：粘土矿物 镉溶液 镉离子 吸附剂 含镉废水处理 

分 类 号：X703[环境科学与工程—环境工程]