The potential application of activated carbon from sewage sludge to organic dyes removal

Citation
N. Graham et al., The potential application of activated carbon from sewage sludge to organic dyes removal, WATER SCI T, 43(2), 2001, pp. 245-252
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
WATER SCIENCE AND TECHNOLOGY
ISSN journal
0273-1223 → ACNP
Volume
43
Issue
2
Year of publication
2001
Pages
245 - 252
Database
ISI
SICI code
0273-1223(2001)43:2<245:TPAOAC>2.0.ZU;2-F
Abstract
The objective of this research work was to study the potential application of activated carbon from sewage sludge to organic dye removal. Methylene bl ue and crystal violet were the two dyes investigated in the present study. Three activated carbons were produced from the exclusive sewage sludge (ref erred to as DS), the sludge with the additive of coconut husk (DC) and slud ge with the additive of peanut shell (DP) respectively. They were character ized by their surface area and porosity and their surface chemistry structu re. Adsorption studies were performed by the batch technique to obtain kine tic and equilibrium data. The results show that the three sludge derived ac tivated carbons had a developed porosity and marked content of surface func tional groups. They exhibited a rapid three-stage adsorption process for bo th methylene blue and crystal violet. Their adsorption capacities for the t wo dyes were high, the carbon DP performed best in the adsorption whereas t he carbon DC performed worst. It is therefore concluded that the activated carbons made from sewage sludge and its mixtures are promising for dye remo val from aqueous streams.