BIODEGRADATION OF FATS, OIL AND GREASE USING MICROORGANISMS ISOLATED FROM PALM OIL MILL EFFLUENT

The biodegradation of fat, oil, and grease (FOG) is important in water pollution control wastewater management. In this study, the viability FOG-degrading microorganisms on palm oil was assessed. Seven strains capable degrading FOG were isolated from mill effluent (POME). potential bacterial selected based Tween-80-degrading ability. Micrococcus lylae strain DSM 20315 showed highest growth compared to other strains. Hence, it for degradation test. biodegradability performed as a function pH (6, 7, 8), initial concentration (1, 3, 5% v/v), inoculum (2, 6, 10% v/v). Optimization these parameters studied using 2-level factorial design. maximum 68%, obtained at 1 % v/v, 10 v/v. lowest 22%. followed by enhanced removal efficiency FOG, but level did not significantly promote rate. As result, optimum process conditions maximizing %v/v, %v/v. ABSTRAK: Biodegradasi lemak, minyak, dan gris adalah penting dalam kawalan pencemaran air rawatan buangan. Kajian ini berkenaan kebolehhidupan organisma pengurai-FOG biodegradasi minyak kelapa sawit. Tujuh berkeupayaan mendegradasi diasingkan daripada cairan buangan sawit Strain bakteria yang berpotensi telah dipilih berdasarkan keupayaan degradasi-Geladak-80. Mikrokokus lilae menunjukkan pertumbuhan tertinggi berbanding lain. Oleh itu, ia bagi ujian degradasi FOG. Keupayaan dihasilkan fungsi 8) ketumpatan awal v/v) inokulum Parameter dikaji menggunakan reka bentuk faktorial 2-tahap. Nilai maksimum sebanyak terhasil pada berketumpatan 1% Degradasi terendah pula Ketumpatan diikuti meningkatkan kecekapan penyingkiran tetapi tidak ketara membantu kadar degradasi. Sebagai kesimpulan, keadaan v/v