Use of fly ash for the removal of phenol and its analogues from contaminated water

Waste Management
Mitali Sarkar, Pradip Kumar Acharya

Abstract

This work attempts to elucidate the effects of different operational variables affecting the mechanistic function of fly ash for removal of some priority organic pollutants viz. phenol and its analogues. Thermodynamic parameters like free energy change, enthalpy and entropy of the process, as well as the sorption isotherms for phenols on fly ash, were measured and the most suitable isotherm was determined. Results of the study indicate that the extent of solute removal is determined by the initial solute concentration, molecular size and molecular arrangement of the solute. At the fixed set of experimental conditions, a model equation can be developed from which the percent removal corresponding to the load of the particular solute is determined. It is assumed that the mechanism of adsorption is governed by the surface characteristics of fly ash; pH has a vital role in influencing the solute removal as both the ionizing power (acidity, pKa) of the solutes and the zero point charge of fly ash (pH(ZPC)) depend on the solution pH. Isotherm pattern and the free energy change indicate that the process is favorable, as well as spontaneous. The information gathered from the study will serve as a predictive modeling procedure for the a...Continue Reading

References

Nov 1, 1988·Bulletin of Environmental Contamination and Toxicology·P N MozaF Korte
Sep 6, 2003·Journal of Colloid and Interface Science·Mitali SarkarBhaskar Bhattacharya
Nov 18, 2005·Journal of Colloid and Interface Science·Mitali SarkarPradip Kumar Datta
Oct 31, 2008·Talanta·Juhani PeuravuoriKalevi Pihlaja

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Citations

Apr 2, 2013·Journal of Hazardous Materials·A V Dordio, A J P Carvalho
Feb 16, 2016·Carbohydrate Polymers·Wenting ShangZhimin Xu
Aug 3, 2012·Ecotoxicology and Environmental Safety·Rakesh Kumar Ghosh, Neera Singh
Nov 11, 2008·Journal of Environmental Management·Su-Hsia Lin, Ruey-Shin Juang
Jun 25, 2008·Journal of Hazardous Materials·Kaili LinXuecheng Xu
May 29, 2007·Journal of Hazardous Materials·M SarkarJ L Goswami
May 27, 2016·Journal of Environmental Health Science & Engineering·L D NaiduPieter Stroeve
Oct 4, 2016·Journal of Hazardous Materials·Shengxin ZhaoYanqing Shen
May 9, 2009·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Aixa GonzálezNatalia Moreno
Apr 16, 2013·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Neera SinghShashi Bala Singh
May 9, 2012·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Rakesh K Ghosh, Neera Singh
Jul 16, 2009·Water Environment Research : a Research Publication of the Water Environment Federation·Seyed Pejvak Pajooheshfar, Mohsen Saeedi
Jan 19, 2012·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Neera SinghShashi B Singh
Nov 28, 2018·Journal of Hazardous Materials·Anna TrubetskayaElisabeth Schröder

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