Primary treatment of anaerobic landfill leachate using activated carbon and limestone: batch and column studies
by Ahmed Abu Foul, Hamidi Abdul Aziz, Mohamed Hasnain Isa, Yung-Tse Hung
International Journal of Environment and Waste Management (IJEWM), Vol. 4, No. 3/4, 2009

Abstract: Leachate generated from an old landfill in Taiping, Perak, Malaysia contains high colour, COD, iron and ammoniacal nitrogen. Activated carbon–limestone mixture was used as a primary treatment process. More than 86% of colour and COD, 95% of iron, and 48% of ammoniacal nitrogen were removed by a mixture of activated carbon and limestone (15:25 by volume) in the batch study compared with 70, 80 and 90% respectively, by column study on the first five days. Both Langmuir and Freundlich isotherms had fitted well with the experimental data. The adsorption kinetics followed the pseudo-second-order model indicating that chemisorption or ion exchange was the rate-controlling step in the adsorption.

Online publication date: Wed, 22-Jul-2009

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