Removal of COD, TSS and colour from palm oil mill effluent (POME) using montmorillonite

The adsorption of POME using natural clay, montmorillonite, has been investigated. The reductions of three important parameters (chemical oxygen demand, total suspended solids and colour) in various influencing factors have been determined. The optimum conditions for mixing speed of the stirrer, con...

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Bibliographic Details
Published in:Desalination and water treatment 2016-05, Vol.57 (23), p.10490-10497
Main Authors: Said, Muhammad, Abu Hasan, Hassimi, Mohd Nor, Mohd Tusirin, Mohammad, Abdul Wahab
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Chemical oxygen demand
Diffusion
Intraparticle diffusion
Langmuir model
Mathematical models
Mills
Montmorillonite
Palm oil
Parameters
POME
Pores
Total suspended solids
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Summary:The adsorption of POME using natural clay, montmorillonite, has been investigated. The reductions of three important parameters (chemical oxygen demand, total suspended solids and colour) in various influencing factors have been determined. The optimum conditions for mixing speed of the stirrer, contact time, dosage of adsorbent, concentration of palm oil mill effluent (POME) and pH were 300 rpm, 90 min, 5 g/L, 25% POME and pH 7, respectively. The removal reached more than 95% for all parameters. The experimental data were found to fit with the Langmuir adsorption isotherm model. The intraparticle diffusion model controlled the adsorption process and, therefore, the diffusion of the solute into the inside pores of the adsorbent took places permanently (irreversible) because the particles were trapped inside the pores. This situation causes the adsorbent capacity to decrease and it cannot be used continuously prior to the regeneration or activation, both chemically and thermally.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2015.1036778