Production of Biogas from Organic Waste and its Utilization as an Alternative Energy Source

Sriharti, Sriharti; Andrianto, Moeso; Fahriansyah, Fahriansyah

doi:10.22161/ijeab/3.3.7

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…From this statement, it was found that the four variables had gone through the methanogenesis stage which is the last stage in the formation of biogas and had sufficient CH4 content to carry out the combustion reaction. The methanogenesis stage has the following reactions as shown in equation ( 6) and ( 7) (Sriharti et al 2018):…”

Section: Biogas Quality Analysismentioning

confidence: 99%

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations

Hadiyanto

Octafalahanda

Nabila

et al. 2023

Int. J. Renew. Energy Dev.

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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.

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Section: Biogas Quality Analysismentioning

confidence: 99%

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations

Hadiyanto

Octafalahanda

Nabila

et al. 2023

Int. J. Renew. Energy Dev.

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“…It assumed 1 kg of soybeans was able to produce 9.5 liters of tofu wastewater, then the potential for biogas produced about 15 liters per 1 kg soybeans. If we assumed the total energy required for cooking for 4-5 persons were 1.5 m 3 of biogas, then 100 kg of soybeans were needed to generate biogas in order to meet the needs of cooking for 1 family that consists of 4-5 persons (Sriharti et al, 2018).…”

Section: Management Strategy Of Tofu Wastewatermentioning

confidence: 99%

Analysis of Potential GHG Emissions from Tofu Industry and Its Mitigation in Indonesia

PUTRI

WALUYO

2022

Jurtekling

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ABSTRAK Tahu merupakan salah satu sumber protein dengan permintaan yang tinggi di Indonesia. Saat ini beberapa industri tahu telah menggunakan peralatan-peralatan berbahan dasar stainless steel. Kondisi ini menunjukkan keseriusan industri tahu untuk membuat produk tahu yang higienis. Namun, produk tahu yang higienis saja tidaklah cukup. Persaingan pasar global menuntut sebuah produk tidak hanya memperhatikan kualitas, namun juga menjadi produk yang ramah lingkungan dengan ditandai oleh nilai emisi CO2 yang rendah. Sejalan dengan kondisi tersebut, maka studi terkait dengan perhitungan emisi CO2 yang dihasilkan oleh sebuah produk menjadi hal yang perlu diutamakan. Pada studi ini dilakukan penelitian estimasi emisi CO2 yang dihasilkan dari 1 kg tahu dengan menggunakan metode LCA dan menerapkan batasan sistem from cradle to gate, yakni penghitungan emisi Gas Rumah Kaca (GRK) dihitung dari penanaman kedelai hingga menjadi 1 kg produk tahu. Studi kasus dilakukan pada 3 industri tahu dan diketahui bahwa emisi GRK yang dihasilkan per 1 kg tahu berada pada rentang 0,35–0,5 kg CO2 eq. Faktor utama penyumbang emisi CO2 berasal dari air limbah hasil dari proses produksi, diikuti budidaya kedelai dan transportasi bahan baku kedelai dari perkebunan menuju ke industri. Hasil penelitian ini memberikan rekomendasi kepada industri tahu untuk mengurangi emisi CO2 yang dihasilkan dari limbah cair proses produksi tahu. Alternatif pengolahan limbah cair yakni dengan mengolah air limbah menggunakan sistem anaerobik guna menghasilkan biogas yang digunakan untuk kebutuhan memasak. Kata kunci: Kedelai, Tahu, LCA, Emisi GRK, Limbah cair ABSTRACT Tofu is one of the protein sources with high demand in Indonesia. Currently, several tofu industries have used stainless steel-based equipment. This condition shows the seriousness of the tofu industry to make hygienic tofu products. However, hygienic tofu products are not enough. The global market competition required the products to take notice not only of their quality but also of environmentally-friendly products characterized by a low value of CO2 emission. In accordance with the condition, studies related to calculating CO2 emissions resulting from a product are necessary. In this study, we conducted research on the estimation of CO2 emissions resulting from 1 kg of tofu using the LCA method and applying the system boundary from cradle to gate, in which greenhouse gas (GHG) emissions were calculated from soybeans plantation to 1 kg of tofu products. Case studies were conducted on three tofu industries, and it was found that the GHG emissions produced per 1 kg of tofu were in the range of 0.35–0.5 kg CO2 eq. Three main factors contribute to CO2 emissions, i.e., wastewater, soybean cultivation, and soybean transportation from plantation area to industry. Therefore, this study recommends the tofu industry reduce CO2 emissions resulting from wastewater. The alternative is to treat wastewater using an anaerobic system to produce biogas for cooking purposes. Keywords: Soybeans, Tofu, Life Cycle Assessment (LCA), GHG emissions, Wastewater

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“…Given the increase in fuel prices due to the increase in world oil prices, the government is encouraged to deal with energy issues. One of the efforts to tighten fuel oil is to look for alternative renewable energy sources (Sriharti, et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Analysis of production and potential utilization as electricity methane gas air dingin landfill

Pratama

Raharjo

Aziz

2023

JPTK

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This study intends to analyze methane gas emissions resulting in landfill procedures. The magnitude of the impact of methane gas emissions on global warming from the waste sector, it is necessary to calculate the potential amount of methane gas emissions of Padang city waste in the Air Dingin Landfill so that it can be used for new energy potential as an alternative energy to replace fossil fuels no longer as a contributor to global warming. In this study, the methodology contains systematic steps in researching to achieve research objectives, namely conducting preliminary studies and literature studies, formulating problems, and setting research objectives as well as how to collect and obtain research data. The result of this study is that the Air DIngin Landfill in Padang City is still processing open dumping, with land that has been operated around 50% of the existing land area. The high operational costs are one of the reasons the sanitary landfill system cannot be done by the Padang City Government. Methane gas produced from 2020 - 2031 in the Air Dingin Landfill is produced from scenario 1 (waste directly landfilled) which is 43,289 gigagrams of CH4 or 43,289 tons of CH4 emissions. CH4 emission scenario 2 (waste reduction by waste pickers in landfill) produced 43,267 gigagrams or 43,267 tons of CH4. CH4 emission scenario 3 (Reduction of waste at source, in the region, and in landfill) produced 40,944 gigagrams CH 4 or 40,944 tons of CH4. After converting methane gas into electrical energy, the potential electricity in scenario 1 is 84.15 megawatts, scenario 2 is 84.10 megawatts and scenario 3 is 79.59 megawatts in 2031.

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Production of Biogas from Organic Waste and its Utilization as an Alternative Energy Source

Abstract: Abstract-As a result of increase in human need

Cited by 5 publications

References 1 publication

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations

Analysis of Potential GHG Emissions from Tofu Industry and Its Mitigation in Indonesia

Analysis of production and potential utilization as electricity methane gas air dingin landfill

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