http://repository.unmul.ac.id/handle/123456789/705 2026-07-19T12:45:15Z http://repository.unmul.ac.id/handle/123456789/56329 Bio-failure or Bio-fuel? Economic Feasibility of Converting Palm Oil Waste to Biogas D.S, Indah; S.Hut., Eko M.P., M.Sc., Ph.D This study aimed to investigate the economic feasibility of using an Up-Flow Anaerobic Sludge Blanket (UASB) reactor to convert liquid waste from palm oil processing plants into biogas containing methane. The study examined total capital investment (TCI), working capital investment (WCI), and production costs at different capacities (3, 30, and 300 liters per day) to determine if the process could generate a profit. The results showed that the biogas production from palm oil industrial liquid waste using the UASB reactor did not result in a profit due to the large capital costs and low biogas production. The implication of this study is that further research is needed to find ways to reduce the capital costs of the process and increase biogas production to make it economically feasible. 2023-09-27T00:00:00Z http://repository.unmul.ac.id/handle/123456789/54719 Green Open Space Planning using the sustainable child-friendly concept Sari, Dharwati P. 2023-07-27T00:00:00Z http://repository.unmul.ac.id/handle/123456789/53008 Kahar, A. dan Rahmat Gunawan. 2019. Pengaruh pH Pada Seeding Dan Aklimatisasi Limbah Cair Pabrik Kelapa Sawit (LCPKS) Dalam Bioreaktor Anaerobik. Prosiding Seminar Nasional Kimia 2019 Jurusan Kimia FMIPA UNMUL, ISBN 978 602 50942 2 4, hal.1-5. Kahar, a Pengolahan biologis, limbah cair yang mengandung substrat organik terlarut dalam bioreaktor anaerobik juga ditentukan oleh proses seeding dan aklimatisasi. Penelitian ini bertujuan mengetahui pengaruh pH seeding dan aklimatisasi POME terhadap COD, BOD dan tekanan biogas dalam bioreaktor anaerobik. Seeding dan aklimatisasi dilakukan pada pH ambient, pH 7.2 dan dan pH 8.0 serta temperature ambient. Tekanan biogas seeding dan aklimatisasi POME dalam bioreaktor anaerobik pada pH 7.2 lebih besar dari pH ambient lebih besar dari pH 8.0, berturut-turut adalah 637 mmH2O; 627 mmH2O dan 598.6 mmH2O. BOD removal pada pH ambient, ph 7.2 dan pH 8.0 berturut-turut adalah 50.1%, 48.86 % dan 47.25%. BOD removal rata-rata sebesar 48.74%. COD removal pada pH ambient, ph 7.2 dan pH 8.0 berturut-turut adalah 52.08%, 43.68% dan 43.18%. COD removal rata-rata sebesar 46.31%. Rasio BOD/COD yang menunjukkan biodegradabilitas seeding dan aklimatisasi POME, pada pH ambient, pH 7.2 dan pH 8.0 berturut-turut adalah 0.505, 0.443 dan 0.478, dengan BOD/COD rata-rata adalah 0.475. 2019-08-24T00:00:00Z http://repository.unmul.ac.id/handle/123456789/53007 Gunawan., R. dan Kahar, A. 2019. Pengaruh Laju Alir Resirkulasi Pada Seeding Dan Aklimatisasi Limbah Cair Pabrik Kelapa Sawit (LCPKS) Dalam Bioreaktor Anaerobik. Prosiding Seminar Nasional Teknologi V, Fakultas Teknik Universitas Mulawarman, p-ISSN: 2598-7410, e-ISSN: 2598-7429, hal. 122-129. Kahar, Abdul Biological treatment of wastewater containing dissolved organic substrate in an anaerobic bioreactor was also determined by seeding and acclimatization. Seeding and acclimatization are carried out to grow, multiply and adapting anaerobic microorganism populations in bioreactors. This study aims to determine the effect of recirculation flow rate on seeding and acclimatization of POME to COD, BOD and biogas pressure in anaerobic bioreactors. Seeding and acclimatization were carried out at recirculation flow rate; Q 0 L/minute, 12 L/minute and 24 L/minute with ambient temperature. Biogas pressure of seeding and acclimatization in anaerobic bioreactors at Q 24 L/minute higher than Q 12 L/minute higher than Q 0 L/minute, were 687.5 mmH2O; 657 mmH2O and 627 mmH2O, respectively. BOD removal at Q 0 L/minute, 12 L/minute and 24 L/minute were 50.1%, 50.29% and 52.19%, respectively. BOD removal averages 50.86%. COD removal at Q 0 L/minute, 12 L/minute and 24 L/minute were 52.08%, 46.76% and 49.18%, respectively. COD removal averages 49.34%. The BOD/COD ratio that shows biodegradability of seeding and acclimatization of POME, at Q 0 L/minute, 12 L/minute and 24 L/minute, was 0.505, 0.465 and 0.488, respectively, with average BOD/COD 0.486. 2019-10-10T00:00:00Z