Current Biotechnology

Pabulo Henrique Rampelotto  
Center of Biotechnology and PPGBCM
Federal University of Rio Grande do Sul
Porto Alegre, RS
Brazil

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Equilibrium and Thermodynamic Adsorption Study of Basagran onto Activated Carbon Prepared from Henna Wood

Author(s): Ahmed Wali, Brahmi Mounaouer, Abdessalem Omri, Nadim Fakhfakh, Abdennaceur Hassen, Mourad Benzina.

Abstract:

The use of Henna wood as a raw material to produce activated carbon by physical activation was investigated. The activated carbons produced were characterized by Nitrogen adsorption isotherms and point of zero charge (pHPZC) properties. BET (Brunauer, Emmett and Teller) surface area of the activated carbon was determined as 584 m2/g. The removal of Basagran from aqueous solutions by adsorption on activated carbon produced has been studied. The adsorption capacity of the activated carbon was found to be of 134.78 mg/g of the adsorbent. Results were analyzed by the Langmuir and Freundlich equations using linear correlation coefficient at different temperatures. Thermodynamic features such as adsorption enthalpy (ΔHad), adsorption entropy (ΔSad) and free enthalpy (ΔGad) were determined.

Keywords: Activated carbon, adsorption, basagran (herbicide), isotherms, thermodynamic parameters, adsorption enthalpy (ΔHad), adsorption entropy (ΔSad) , free enthalpy (ΔGad), degradation products, metabolites, furnace, isothermal equilibrium, Compensation Theory, Adsorption isotherm, Vander Waals

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Article Details

VOLUME: 1
ISSUE: 3
Year: 2012
Page: [207 - 211]
Pages: 5
DOI: 10.2174/2211550111201030207
Price: $58