Economic Analysis of Biogas Production via Biogas Digester Made from Composite Material

Obileke, KeChrist; Makaka, Golden; Nwokolo, Nwabunwanne; Meyer, Edson L.; Mukumba, Patrick

doi:10.3390/chemengineering6050067

Cited by 15 publications

(4 citation statements)

References 17 publications

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“…Assuming the characteristics of the biomass sample are representative across the full production, the results of biogas production (Table 6) were used in the LCA analysis. The energy content of 1 m 3 biogas was initially assumed to be equivalent to 0.46 kg LPG or 0.62 L kerosene [19,20]. The biogas yield would reduce the need for LPG, it might even be possible to use biogas alone if scale-up is accounted for.…”

Section: Resultsmentioning

confidence: 99%

Study on biogas production from coffee wastes and cow-dung fermentation and its use towards reducing emissions from coffee roasting

Irawan

McLellan

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The production of high-quality coffee for export is an important industry in Indonesia. However, coffee processing produces unavoidable waste and emissions to the environment; 1 kg of cherry beans (CB) needs 3 kg of water for processing (2 kg for CB selection by floating, 1kg for wash-fermentation). One kg CB generates several waste and product streams: cherry skin (44%), beans (20%), parchment (5%), pulp (4%), silverskin (0.5%), and volatiles (26.5%). This study utilized the wastewater from the washed-coffee processing such as fermentation wash water and coffee pulp. The materials were mixed with cow dung from local farms for anaerobic processing in a one-gallon digester. This research took into consideration three variations: cow dung mixed with water in the same amount (1:1); cow dung and fermentation washing wastewater (1:1); and cow dung and pulp (1:1). The resulting biogas was analyzed with gas chromatography for comparison. Biogas yield was used to estimate the potential for supplying heat and electricity for use in the coffee roasting process. Alternative energy sources were also considered in the following combinations: biogas-electricity (solar panels) and LPG-electricity (fossil). A life cycle assessment was performed on scenarios to calculate global warming potential (GWP). This study will be used as a pilot project toward a zero-waste and zero-emission coffee industry. The scenario with the lowest GWP can be used as a reference for the sustainability of coffee production.

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Section: Resultsmentioning

confidence: 99%

Study on biogas production from coffee wastes and cow-dung fermentation and its use towards reducing emissions from coffee roasting

Irawan

McLellan

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…We first constructed the biodigester and introduced sheep farming at the demo plots. Different materials of biodigester have been used widely, and environmental and economic aspects have been assessed (Obileke et al, 2022). In the current study, the fiber materials were used due to better technical performances of biogas production and economically viable for the farmer groups.…”

Section: Discussionmentioning

confidence: 99%

A preliminary report of integrating sheep farming in combination with adopting biogas technology in organic rice farming systems in upland areas in Indonesia

Zahra,

Sari,

Pratama

et al. 2024

VIS

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This study aims to understand the preliminary results of integrating sheep farming in combination with adopting biogas technology in organic rice farming (ORF) systems in upland areas. The research was conducted in upland areas in Grabag Subdistrict Magelang Regency, Central Java Province (UPL1) and Kertasari Subdistrict, Tasikmalaya Regency, West Java Province (UPL2), Indonesia. At each upland area, a demo plot with a 17 m3 digester has been established, and 120 sheep were introduced. A combination of sheep and beef cattle manure was used as a biogas substrate. The soil sample of one and three-year conversion of ORF was collected, and macro and micro minerals were analyzed. The biogas quality was analyzed, including dry matter (DM), nitrogen (N), carbon (C) and nitrogen-ammonia (N-NH3). The greenhouse (GHG) emissions, including methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O), were measured. The results indicated that C-organic content at three-year conversions of ORF in UPL1 was much lower (P<0.05) than the one-year conversion. The average CH4, CO2, and N2O contents in UPL1 were 661, 477.3, and 0.16 mg/m2/day, respectively. The average CH4, CO2, and N2O contents in UPL2 were 3328, 3038 and 2.42 mg/m2/day, respectively. In UPL1, the proportion of CH4 was 52.5 %, CO2 was 47.4 %, and N2O was 0.01 % while the proportion of CH4 was 57.9 %, CO2 was 42.0 %, and N2O was 0.01 % in UPL2. To conclude, integrating sheep farming in combination with adopting biogas technology in the ORF system improves manure management and provides organic fertilizer, which subsequently reduces the use of artificial fertilizer and avoids GHG emissions.v

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“…According to the results, the estimated net present value, profitability, and annuity were high, confirming that constructing a biogas plant is a favorable and feasible project. However, it requires government subsidies at the initial stage [17]. The main contribution of this paper is the evaluation of the economic and financial feasibility of biogas plants under the conditions of the Slovak Republic.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Environmental and Economic-Financial Feasibility of Biogas Plants for Agricultural Waste Treatment

Belinska,

Bielik,

Adamičková

et al. 2024

Sustainability

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The use of individual biogas plants can be a means of solving many energy-environmental and financial-economic problems. The article aims to assess the prerequisites and consequences of using biogas plants at the macro and micro levels to search for opportunities to reduce the cost of their installation and make them more affordable for individual farms. The need for the use of biogas plants by farms is determined by the fact that these farms have a raw material base; the growing cost of energy resources pushes them to search for new sources of profit. At the micro level, the costs of biogas plants in the conditions of companies and individual farms in the Slovak Republic are evaluated. At the macro level, the aggravation of energy and agricultural problems and the need to transition to green technologies require a comprehensive approach to their solution. The article investigated the cost of purchasing and operating biogas plants based on a private company’s data. It assessed the cost of the construction of a biogas plant and more. The analysis of biogas plant operation results showed that its purchase and use by a farm can be financially unprofitable but bring significant benefits in the energy, environmental, and social dimensions.

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Economic Analysis of Biogas Production via Biogas Digester Made from Composite Material

Cited by 15 publications

References 17 publications

Study on biogas production from coffee wastes and cow-dung fermentation and its use towards reducing emissions from coffee roasting

Study on biogas production from coffee wastes and cow-dung fermentation and its use towards reducing emissions from coffee roasting

A preliminary report of integrating sheep farming in combination with adopting biogas technology in organic rice farming systems in upland areas in Indonesia

Assessment of Environmental and Economic-Financial Feasibility of Biogas Plants for Agricultural Waste Treatment

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