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Comparative sorption equilibrium studies of toxic phenols on flyash and impregnated flyash
Author(s) -
Singh Binay Kr.,
Rawat Narendra S.
Publication year - 1994
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280610405
Subject(s) - sorption , enthalpy , fly ash , chemistry , phenol , langmuir , phenols , freundlich equation , cresol , nuclear chemistry , nitrophenol , thermodynamics , chromatography , environmental chemistry , organic chemistry , adsorption , physics , catalysis
In the present study, the sorption of toxic phenols, which include phenol, o ‐cresol, m ‐cresol, p ‐cresol, o ‐nitrophenol, m ‐nitrophenol and p ‐nitrophenol, has been investigated. The influences of various factors, such as particle size, impregnation of flyash (IFA), pH and temperature on the sorption capacity have been studied. Equilibrium modelling has been carried out using Langmuir and Freundlich isotherm equations and constants have been calculated under different conditions. Thermodynamic studies have also been carried out and values of standard free energy (Δ G °), enthalpy (Δ H °) and entropy (Δ S °) calculated.