Adsorption of chromium (VI) by ethylenediamine-modified cross-linked magnetic chitosan resin: Isotherms, kinetics and thermodynamics

• Published in: Journal of hazardous materials Vol. 185; no. 1; pp. 306 - 314
• Main Authors: Hu, Xin-jiang, Wang, Jing-song, Liu, Yun-guo, Li, Xin, Zeng, Guang-ming, Bao, Zheng-lei, Zeng, Xiao-xia, Chen, An-wei, Long, Fei
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.01.2011; Elsevier
• Subjects: Adsorption; Algorithms; Applied sciences; Chemical engineering; chemistry; chitosan; Chitosan - chemistry; Chromium; Chromium (VI); Chromium - chemistry; Cross-Linking Reagents; Crosslinking; Diffusion; EMCMCR; Equilibrium isotherm; Ethylenediamines; Ethylenediamines - chemistry; Exact sciences and technology; heat production; Hydrogen-Ion Concentration; ions; Kinetics; Langmuir-Blodgett films; Magnetics; Mathematical models; Microscopy, Electron, Scanning; Models, Chemical; Pollution; Polymers; sodium hydroxide; sorption isotherms; Temperature; Thermodynamics; EMCMCR; Chromium (VI); Kinetics; Adsorption; Equilibrium isotherm; Second order; Adsorption capacity; Modeling; Kinetic model; Batchwise; Thermodynamic parameter; pH; Aqueous solution; Diffusion; Sorbent

The adsorption of chromium (VI) ions from aqueous solution by ethylenediamine-modified cross-linked magnetic chitosan resin (EMCMCR) was studied in a batch adsorption system. Chromium (VI) removal is pH dependent and the optimum adsorption was observed at pH 2.0. The adsorption rate was extremely fa...