%0 Journal Article
%T High-rate anaerobic treatment of palm oil mill effluent
%A Monticha Pechsuth
%A Poonsuk Prasertsan
%A Masao Ukita
%J Songklanakarin Journal of Science and Technology
%D 2001
%I Songkla University
%X Palm oil mil effluent (POME) contains high amount of organic matter, oil & grease, total solids and suspended solids. Anaerobic treatment of POME was conducted at room temperature (30¡À2oC) and high temperature (50¡À0.5oC). The effects of hydraulic retention time (HRT), organic loading rate (OLR), COD:N ratio and temperature on the anaerobic digestion of POME were investigated. The optimum conditions were found to be 10 days HRT, OLR of 9.50 kg COD m-3d-1, COD:N ratio of 65 and the optimum temperature at 50oC. The highest COD reduction of 81.1% was achieved. Biogas production in general was greater than 0.30 m3/kg COD/d. Comparison on anaerobic treatment using POME and POME treated by thermotolerant polymer-producing fungi Rhizopus sp. ST4 revealed that the biopretreated POME gave higher COD removal (72.6%) but lower biogas production (0.97 m3/m3/d or 0.27 m3/kg COD/d) than the POME without pretreatment (56.1% and 1.16 m3/m3/d or 0.37 m3/kg COD/d, respectively).
%K palm oil mill effluent
%K anaerobic treatment
%K high rate
%K biogas
%K biopretreatment
%U http://rdo.psu.ac.th/sjstweb/journal/23-Suppl-1/23-S1-2001-779-788.pdf