Sludge-adsorbents from palm oil mill effluent for methylene blue removal

This work was aimed to characterize sludge-adsorbents from palm oil mill effluent for methylene blue removal. Two chemical agents, ZnCl2 and KOH were used in adsorbent preparation. Commercial activated carbon was employed for comparison. The adsorbents were characterized according to surface area, e...

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Bibliographic Details
Published inJournal of environmental chemical engineering Vol. 1; no. 4; pp. 1091 - 1098
Main Authors Zaini, Muhammad Abbas Ahmad, Zakaria, Muaz, Mohd.-Setapar, S.H., Che-Yunus, M.A.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2013
Subjects
Adsorbent
Adsorption
Chemical activation
Methylene blue
POME sludge
POME sludge
Chemical activation
Adsorption
Adsorbent
Methylene blue
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Summary:This work was aimed to characterize sludge-adsorbents from palm oil mill effluent for methylene blue removal. Two chemical agents, ZnCl2 and KOH were used in adsorbent preparation. Commercial activated carbon was employed for comparison. The adsorbents were characterized according to surface area, elemental composition, surface morphology and available functional groups. Methylene blue adsorption was carried out at 27±1°C, and the adsorption data was analyzed based on the models of equilibrium isotherm and kinetics. Results show that the methylene blue removal by sludge-adsorbents is comparable to that of commercial activated carbon, although the surface area of the former is much inferior to the latter. The adsorption of methylene blue could be well described by the Langmuir model while the pseudo-first-order and the pseudo-second-order models sufficiently fit the kinetics data. Results indicate that sludge-adsorbents could be employed as potential adsorbent candidate for methylene blue removal from wastewater.
ISSN:2213-3437
2213-3437
DOI:10.1016/j.jece.2013.08.026