The effectiveness of fly ash in adsorbing mercury from wastewater has been studied. Batch kinetic and isotherm studies have been carried out to determine the effect of contact time, pH and temperature on the adsorption. It has been found that a contact time of 2 h is necessary for the adsorption to reach equilibrium. The optimum pH was found to be between 5.0 and 5.5. The adsorption isotherm data were described adequately by both the Langmuir and the Freundlich models. The adsorption process was found to be endothermic.
Get full access to this article
View all access options for this article.
References
1.
Anon. (1990) Standard Methods for the Examination of Water and Wastewater, 17th Edn, Am. Public Health Assoc., Washington, DC, USA.
2.
BenefieldL.D.JudkinsJ.F.WeandB.L. (1982) Process Chemistry for Water and Wastewater Treatment, Prentice-Hall Inc., NJ, USA.
3.
GangoliN.MarkeyD.C.ThodasG. (1975) Proc. 2nd Conf. Complete Water Reuse — Waters Interface with Energy, Air and Solids, Chicago, USA.
4.
GroverM.NarayanaswamyM.S. (1982) J. Environ. Eng. Div., Inst. Eng. India63, 36.
