Adsorption of polluting substances on activated carbons prepared from rice husk and sugarcane bagasse |
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| Authors: | Dimitrios Kalderis, Dimitrios Koutoulakis, Panagiota Paraskeva, Evan Diamadopoulos, Emilia Otal, Joaquí n Olivares del Valle,Constantino Fern ndez-Pereira |
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| Affiliation: | aDepartment of Environmental Engineering, Technical University of Crete, 73100 Chania, Greece;bAsociación de Investigación y Cooperación Industrial de Andalucía (AICIA), University of Seville, Seville, Spain |
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| Abstract: | Rice husk and sugarcane bagasse were chemically impregnated with ZnCl2 and carbonized at 700 °C in a large-scale rotary furnace. The activated carbons (ACs) obtained had BET surface area of 811 and 864 m2/g, respectively, and were essentially microporous. The adsorption of arsenic, humic acid, phenol and a municipal solid waste landfill leachate was examined. Both ACs showed the best adsorption behaviour towards phenol, removing around 80% at the equilibrium time of 4 h. The adsorption isotherms for arsenic and humic acid were also favourable, although the maximum loadings achieved were lower than that of phenol. Finally, the rice husk AC showed 60% and 70% removal efficiency for colour and COD, respectively, when tested on a landfill leachate. |
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| Keywords: | Rice husk Activated carbon Sugarcane bagasse Landfill leachate Arsenic Humic acid Phenol Adsorption |
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