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All Journal International Journal of Renewable Energy Development CARADDE: Jurnal Pengabdian Kepada Masyarakat Abdimasku : Jurnal Pengabdian Masyarakat Automotive Experiences Aptekmas : Jurnal Pengabdian Kepada Masyarakat International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Kusmiyati Kusmiyati
Department Of Industrial Engineering, Faculty Of Engineering, Dian Nuswantoro University
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Journal : International Journal of Renewable Energy Development

 1 
Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations H Hadiyanto; Figa Muhammad Octafalahanda; Jihan Nabila; Andono Kusuma Jati; Marcelinus Christwardana; Kusmiyati Kusmiyati; Adian Khoironi
International Journal of Renewable Energy Development Vol 12, No 2 (2023): March 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.52446

Abstract

The need of renewable energy is paramount important as it is expected to replace fossil energy. One of renewable energy commonly used for rural area is biomass-based energy. Biogas is a biomass-based energy where organic materials are converted to methane gas via anaerobic digestion process. The limitations of mono-feedstock biogas are instability digestion process, low yield biogas produced and require readjusting C/N ratio, therefore co-digestion process was proposed to overcome these problems. This study aims to investigate the feasibility of anaerobic co-digestion of a mixture of cattle manure and bagasse residue in different weight ratio combinations. Biogas was generated by anaerobic digestion using a mixed substrate composed of a combination of weight ratios of bagasse:cattle manure (1:5, 1:2, 1:1, and 3:1). The kinetic analysis was evaluated by fitting Gompertz and Logistic model to experimental data of cumulative biogas. The result showed that the combination of 1:5 ratio of bagasse waste to cattle manure obtained the best biogas yield with cumulative biogas at 31,000 mL. The kinetic model of Gompertz and Logistic were able to predict the maximum cumulative biogas at ratio of 1:5 (cattle: bagasse) at 31,157.66 mL and 30,112.12 mL, respectively. The other predictions of kinetic parameters were maximum biogas production rate (Rm)= 1,720.45 mL/day and 1,652.31 mL/day for Gompertz and Logistic model, respectively. Lag periods were obtained at 2.403 day and 2.612 day for Gompertz and Logistic model, respectively. The potential power generation of 338.71 Watt has been estimated from biogas. This research has proven a positive feasibility of co-digestion of two feed-stocks (cattle manure and bagasse) for biogas production.
Multi-Feedstocks Biodiesel Production from Esterification of Calophyllum inophyllum Oil, Castor Oil, Palm Oil and Waste Cooking Oil H Hadiyanto; Apsari Puspita Aini; Widayat Widayat; Kusmiyati Kusmiyati; Arief Budiman; Achmad Roesyadi
International Journal of Renewable Energy Development Vol 9, No 1 (2020): February 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.9.1.119-123

Abstract

Biodiesel can be produced from various vegetable oils and animal fat. Abundant sources of vegetable oil in Indonesia, such as Calophyllum inophyllum, Ricinus communis, palm oil, and waste cooking oil, were used as raw materials. Multi-feedstock biodiesel was used to increase the flexibility operation of biodiesel production. This study was conducted to determine the effect of a combination of vegetable oils on biodiesel characteristics. Degumming and two steps of esterification were applied for high free fatty acid feedstock before trans-esterification in combination with other vegetable oils. Potassium hydroxide was used as a homogenous catalyst and methanol as another raw material. The acid value of C. inophyllum decreased from 54 mg KOH/gr oil to 2.15 mg KOH/gr oil after two steps of esterification. Biodiesel yield from multi-feedstock was 87.926% with a methanol-to-oil molar ratio of 6:1, temperature of 60 ℃, and catalyst of 1%wt. ©2020. CBIORE-IJRED. All rights reserved
Co-Authors Abu Salam Achmad Roesyadi Adian Khoironi Agnes Heratri Andono Kusuma Jati Apsari Puspita Aini Arief Budiman Dewa Kusuma Wijaya Diah Ayu Esti Widya Astuti Figa Muhammad Octafalahanda H Hadiyanto H Hadiyanto Hantoro Satriadi Herwin Suprijono Jihan Nabila Juli Ratnawati Luqman Buchori Marcelinus Christwardana Nadia Taradissa Maheswari Norzita Ngadi Nur Hidayati Reistu Widiastutik Rizca Aulyana Sabda Wahyu Nugroho Sakina Tunissa Anarki Wahyu Fitriani Widayat Widayat Widayat Widayat