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Removal of endosulfan from water using palm shell activated carbon and rice husk ash
Journal of Oil Palm Research, Vol.20, pp.527-532
Malaysian Palm Oil Board
2008
Abstract
In this study, the adsorption of endosulfan, a type of pesticide, onto agricultural waste-based adsorbents, namely oil paint shell activated carbon (PSAC) and rice husk ash, (RHA), was investigated. The as-received adsorbents were used for batch α- and, β-endosulfan adsorption studies which included kinetics and equilibrium aspects at a constant solution pH of 5 and at a temperature of 25°C. It was found that removal of, β- endosulfan by both adsorbents was significantly more efficient than that of α-endosulfan indicating a high affinity of PSAC and RHA towards, β-endosulfan. Interestingly, kinetic equilibrium for β-endosulfan adsorption onto PSAC was achieved after 30 min of contact time with a very high capacity of 418 mg g-1. The adsorption kinetics data fitted the pseudo-second order model well, implying chemisorption was the rate-controlling step. Equilibrium adsorption data for PSAC fit the Freundlich isotherm better than the Langinuir isotherm, suggesting the existence of multi-layer adsorption of endosulfan on a relitively heterogeneous PSAC surface. It was found that PSAC was efficient in removing β-endosulfan from water while it was conversely true for RHA.
Details
- Title
- Removal of endosulfan from water using palm shell activated carbon and rice husk ash
- Authors/Creators
- Y.N. Lim (Author/Creator)M.G. Shaaban (Author/Creator)C-Y Yin (Author/Creator)
- Publication Details
- Journal of Oil Palm Research, Vol.20, pp.527-532
- Publisher
- Malaysian Palm Oil Board
- Identifiers
- 991005541398307891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Other
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