Synthesis, characterization and adsorption behavior of coconut leaf carbon

Synthesis, characterization and adsorption behavior of coconut leaf carbon Adsorption at the liquid–solid interface has numerous applications in the removal of toxic materials and organic pollutants from water. The present work reports the adsorption of maleic acid onto activated carbon obtained from coconut (Cocos nucifera) leaves. Three types of activated carbons were synthesized by different methods: physical, chemical and microwave activation. In this work, we characterized these methods by XRD, SEM, TGA and FTIR spectroscopic analysis. Activated carbons were subjected to adsorption of maleic acid and the process of adsorption was studied as a function of concentration of acid, contact time and temperature. The polar C–O functional group of the carbon surface attracts H+ ions from the acid solution. This interaction is responsible for the adsorption process. The adsorption data were fitted to Freundlich and Langmuir isotherms. The process of adsorption was found to follow second order kinetics. The effect of temperature on adsorption was also studied and the activation energy, change in enthalpy and entropy were calculated based on the theory of absolute reaction rate expressions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Synthesis, characterization and adsorption behavior of coconut leaf carbon

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-017-2883-x
Publisher site
See Article on Publisher Site

Abstract

Adsorption at the liquid–solid interface has numerous applications in the removal of toxic materials and organic pollutants from water. The present work reports the adsorption of maleic acid onto activated carbon obtained from coconut (Cocos nucifera) leaves. Three types of activated carbons were synthesized by different methods: physical, chemical and microwave activation. In this work, we characterized these methods by XRD, SEM, TGA and FTIR spectroscopic analysis. Activated carbons were subjected to adsorption of maleic acid and the process of adsorption was studied as a function of concentration of acid, contact time and temperature. The polar C–O functional group of the carbon surface attracts H+ ions from the acid solution. This interaction is responsible for the adsorption process. The adsorption data were fitted to Freundlich and Langmuir isotherms. The process of adsorption was found to follow second order kinetics. The effect of temperature on adsorption was also studied and the activation energy, change in enthalpy and entropy were calculated based on the theory of absolute reaction rate expressions.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Feb 11, 2017

References

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