摘要
试验研究了pH值、吸附时间和吸附剂用量对膨润土吸附重金属离子Pb2+,Zn2+,Cr(VI)和Cd2+的影响.结果表明,在本试验的pH值、吸附时间及吸附剂用量条件下,膨润土对Pb2+,Zn2+,Cd2+的吸附效果均优于其对Cr(VI)的吸附效果;pH值是影响上述吸附的重要因素,离子交换和表面络合是上述吸附的主要形式.
The actors of influence in using bentonite to adsorb Pb^2＋ ,Zn^2＋ ,Cr（Ⅵ）,Cd^2＋ were discussed. The adsorption was tested under laboratory conditions as a functions of pH, adsorption time and quantity of bentonite. The results of this research show that the adsorption capacity of bentonite to Pb^2＋ ,Zn^2＋ ,Cd^2＋ is better than to Cr（Ⅵ） and the adsorption capacity strongly depends on pH. The research also indicates that the adsorption form may be mainly surface complex and ions exchange.
出处
《建筑材料学报》
EI
CAS
CSCD
2006年第5期507-510,共4页
Journal of Building Materials
基金
国家自然科学基金资助项目(20277027)
