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All Journal RESWARA: Jurnal Riset Ilmu Teknik
Rizky Nadeak
Program Studi Teknologi Pengolahan Hasil Perkebunan, Institut Teknologi Sawit Indonesia, Medan, Indonesia
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Analysis of Retention Time on COD, pH, and Biogas Volume from Three Different Palm Oil Mills Sri Wahyuna Saragih; Rizky Nadeak
RESWARA: Jurnal Riset Ilmu Teknik Vol. 4 No. 4 (2026): RESWARA: Jurnal Riset Ilmu Teknik, October 2026
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Kalibra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/reswara.v4i4.592

Abstract

This study examines how retention time affects the effectiveness of anaerobic digestion in the treatment of Palm Oil Mill Effluent (POME). The study focuses on variations in Chemical Oxygen Demand (COD), pH levels, and biogas production using wastewater sourced from three palm oil processing facilities: Pagar Merbau POM, Adolina POM, and Cinta Raja POM retention Time. Anaerobic digestion was conducted for various retention periods of 0, 15, 30, 45, and 60 days. Evaluations were conducted to assess the reduction of organic contaminants, stabilization of pH levels, and the amount of biogas produced during the fermentation phase. The results showed that COD generally decreased with increasing retention time, although temporary increases were observed at days 30 and 60, while pH levels gradually moved towards a more stable state. Biogas production increased and peaked at 45 days, but no biogas production was observed at 60 days. These results indicate that retention time is crucial in influencing the effectiveness of anaerobic treatment methods. A retention period of 45 days offers the best conditions for the reduction of organic pollutants and for optimizing biogas production from POME.
Co-Authors Sri Wahyuna Saragih