ORIGINAL RESEARCH
A New Montmorillonite/Humic Acid Complex
Prepared in Alkaline Condition to Remove
Cadmium in Waste Water
Xiangfeng Zeng1,2,3, Zuwei Wang2, Zhanhua Ji1,2,3, Shuhe Wei1
1Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology,
Chinese Academy of Sciences, Shenyang 110016, P.R. China
2College of Urban and Environment Science, Tianjin Normal University, Tianjin 300384, PR China
3University of Chinese Academy of Sciences, Beijing 100039, P.R. China
Chinese Academy of Sciences, Shenyang 110016, P.R. China
2College of Urban and Environment Science, Tianjin Normal University, Tianjin 300384, PR China
3University of Chinese Academy of Sciences, Beijing 100039, P.R. China
Submission date: 2014-02-20
Final revision date: 2014-07-16
Acceptance date: 2014-08-03
Publication date: 2015-04-02
Pol. J. Environ. Stud. 2015;24(2):817–821
KEYWORDS
TOPICS
ABSTRACT
A new montmorillonite/humic acid complex preparation method in the alkaline environment was studied
by experiment, and the complex effect on remediation of heavy metal pollution was verified. The best technological
condition of the montmorillonite/humic acid complex preparation in alkaline environment was that
the mass ratio between montmorillonite and humic acid was 100:3, the reaction solution was 0.01 mol/L sodium
nitrate solution, the pH value of the reaction solution was 8.5, and the reaction time was 24 hours. The complex
has better remediation effect on cadmium waste water. The cadmium adsorption capacity of the complex
was 18.96 mg/g, and the pH value ranges of cadmium waste water suited for the complex was from 5 to 9.
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