Kelleher, BP; O'Callaghan, MN; Leahy, MJ; O'Dwyer, TF; Leahy, JJ

2002

November

Journal Of Chemical Technology And Biotechnology

The use of fly ash from the combustion of poultry litter for the adsorption of chromium(III) from aqueous solution

Published

()

adsorption poultry litter fly ash chromium(III) wastewater treatment WASTE-WATER REMOVAL RECOVERY CADMIUM LEAD

77

11

1212

1218

Fly ash, from the combustion of poultry litter, was assessed as an adsorbent for chromium(III) from aqueous solution. The adsorption process was studied as a function of temperature and time. Adsorption was best described by the Langmuir model. The adsorption of chromium(III) on the fly ash was endothermic and kinetic studies suggest that the overall rate of adsorption was pseudo-second order. At low initial concentrations film diffusion effects contribute to limiting the overall rate of adsorption while at higher initial chromium(III) concentrations pore diffusion becomes more important. An adsorption capacity of 5 3 mg dm(-3) was reached at 20degreesC. (C) 2002 Society of Chemical Industry.

0268-2575

10.1002/jctb.689