Adsorption of reactive green 19 from water using polyaniline/bentonite

Journal of Water Reuse and Desalination

Wang, Xiaolei¹  Chen, Dongguang²  Zhou, Shangang³  Peng, Longgui³  Tie, Jingxi³  Zhao, Meiqi³ 

[1] College of Environment, Hehai University, Nanjing, 210044, China;School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China;School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450011, China

关键词: adsorption;    isotherm;    kinetics;    polyaniline/bentonite;    reactive green 19;    thermodynamics;   

DOI  :  10.2166/wrd.2016.164

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

Polyaniline/bentonite was used in this study to investigate its adsorption behaviors of reactive green 19. Influencing factors including contact time, pH, temperature and inorganic salts were investigated. The adsorption kinetic data fitted the pseudo-second-order model better than the pseudo-first-order and Elovich models, and the Langmuir model was better than the Freundlich model to describe the adsorption process. Thermodynamic studies indicated that the adsorption of reactive green 19 by polyaniline/bentonite was an endothermic and spontaneous process. Experimental data indicated that both NaCl and Na2SO4 could improve the reactive green 19 adsorption as a result of aggregation of the dye molecules in solution induced by the inorganic salts, and an increase of pH value from 5 to 9 caused a slight decrease in reactive green 19 adsorption.

【 授权许可】

CC BY-NC-ND