title: Performance comparison between mesophilic and thermophilic anaerobic reactors for treatment of palm oil mill effluent.
abstract: The anaerobic digestion of palm oil mill effluent (POME) was carried out under mesophilic (37°C) and thermophilic (55°C) conditions without long-time POME storage in order to compare the performance of each condition in the field of Sumatra Island, Indonesia. The anaerobic treatment system was composed of anaerobic hybrid reactor and anaerobic baffled filter. Raw POME was pretreated by screw decanter to reduce suspended solids and residual oil. The total COD removal rate of 90-95% was achieved in both conditions at the OLR of 15kg[COD]/m(3)/d. The COD removal in thermophilic conditions was slightly better, however the biogas production was much higher than that in the mesophilic one at high OLR. The organic contents in pretreated POME were highly biodegradable in mesophilic under the lower OLRs. The biogas production was 13.5-20.0l/d at the 15kg[COD]/m(3)/d OLR, and the average content of carbon dioxide was 5-35% in both conditions.
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Joo-Young
authors.initials: JY
authors.lastname: Jeong
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Sung-Min
authors.initials: SM
authors.lastname: Son
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Jun-Hyeon
authors.initials: JH
authors.lastname: Pyon
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea. Electronic address: jooypark@hanyang.ac.kr.
authors.forename: Joo-Yang
authors.initials: JY
authors.lastname: Park
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology*; D002245:Carbon Dioxide / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000032:analysis*; D008697:Methane / Q000096:biosynthesis; D000073878:Palm Oil; D010938:Plant Oils / Q000737:chemistry*; D012722:Sewage; D013997:Time Factors; D014835:Volatilization; D014865:Waste Disposal, Fluid; D018508:Water Purification / Q000379:methods*
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D010938:Plant Oils; D012722:Sewage; D002245:Carbon Dioxide; D000073878:Palm Oil; D008697:Methane
keywords: Anaerobic digestion; Mesophilic; Organic loading rate; Palm oil mill effluent; Thermophilic