NDLI: Kinetics and thermodynamics of chromate and phosphate uptake by polypyrrole: batch and column studies

Content Provider	Springer Nature Link
Author	Hammud, Hassan H. Abbas, Ismail Al khalili, Diana
Copyright Year	2015
Abstract	Polypyrrole sorption performance for removal of phosphate and chromate anions from water was evaluated by batch and column studies. The uptake isotherms, kinetics, chromate recycling, and experimental conditions such as temperature, pH, and dosage were optimized. The uptake data fitted Freundlich isotherm model very well, and the removal process was found to be endothermic and spontaneous in nature. The results indicate that the removal of both anions is a physisorption process. The kinetic data were described better by the pseudo second-order kinetic model. The maximum uptake capacities for phosphate and chromate anions were 120 and 26 mg/g respectively. The uptake equilibrium for phosphate and chromate was attained in 120 and 60 min respectively. The solution pH showed insignificant effect on anions removal over a pH range from 2.0 to 10.0. Three well known column uptake models, Thomas, Yoon and Nelson and Yan et al., were used to analyze the experimental data of chromate removal from water by polypyrrole. Thomas model showed better fitting than other models. Polypyrrole was regenerated and reused by using 0.1 M HCl solution. This polymer is a promising sorbent than other materials for phosphate and chromate removal from wastewater.
Starting Page	395
Ending Page	405
Page Count	11
File Format	PDF
ISSN	13883127
Journal	Journal of Inclusion Phenomena and Macrocyclic Chemistry
Volume Number	82
Issue Number	3-4
e-ISSN	15731111
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-03-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polypyrrole Chromate Phosphate Uptake isotherms Kinetics Thermodynamics Column studies Organic Chemistry Food Science Crystallography
Content Type	Text
Resource Type	Article
Subject	Chemistry Condensed Matter Physics Food Science

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