A techno-assessment approach on biogas yield from organic agriculture wastes of cauliflower and grape residues
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In recent years, developing sustainable management by transforming organic biomass wastes into value-added products has become advantageous. Cauliflower (CF) and grapes are cultivated in hilly regions of India at all times, which facilitates the recycling of those waste into biogas generation for substantial energy share. This techno-assessment approach examines biogas yield via anaerobic co-digestion of feedstocks include CF, grape residue (GR) as substrates, dairy manure (DM) as inoculum and water (W) considering mass proportions of (GR:CF:DM:W) in case1: 50/10/10/30, case2: 10/50/10/30, case3: 15/45/10/30, case4: 30/30/10/30, and case5: 40/20/10/30. Real-time experimentation studies are carried out for 45 days in a 50 liter laboratory-type biogas digester under mesophilic conditions. The anaerobic digestion of each batch utilizing the selected feedstocks with 10.496, 10.935, 10.879, 10.713, and 10.602 kg of total volatile solids produces biogas yields of 0.584, 0.638, 0.704, 0.766, and 0.785 m3/kg VS. Furthermore, methane yields of 0.403, 0.451, 0.502, 0.559, and 0.580 m3/kg VS are attained. According to the results, anaerobic co-digestion of feedstocks in case5 promotes maximum biogas and methane yields, paving the path for greater value added transition from bio-mass waste to bio-gas as an alternate source of clean energy especially in hilly regions which has become more beneficial for improved energy conservation and management with eco-friendliness.Keywords:
Biogas
Abstract This article is a review of the scientific literature published in 2019 on topics relating to bioenergy from biofuel residues and waste. This literature review is divided into the following sections: Feedstocks, Biodiesel, Bioethanol, Hydrogen, Biohydrogen, Biofuel Residues, Microalgae, and Lignocelluloses.
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Biogas is generated from anaerobic digestion of organic wastes by micro organisms. It is a relatively simple and economical method to produce a fuel from waste. It has a composition of methane as the main component with 50–70 percent, carbon dioxide around 30–40 percent and, hydrogen sulphide and moisture in trace quantities. The composition of biogas varies depending upon the substrates used. The raw biogas from the biogas digesters is properly scrubbed and purified to remove the unwanted gases like CO2, H2S and moisture upto a certain required level. In this work, a biogas upgrading system of 2 m3/h capacity has been developed for the removal of carbon dioxide and hydrogen sulphide from biogas, is indispensable to get biomethane. Developed biogas upgrading system, upgrades the biogas up to 96- 97% biomethane at 10 bar column-operating pressure with 1.5–2.5 m3/h of biogas in-uow rate and 1.75 m3/h of water inuow rate.
Biogas
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This chapter contains sections titled: Background Bioethanol Feedstocks Biodiesel Feedstocks Ethanol Production Thin Stillage Characterization Cassava-Based Ethanol Production Cellulose-Based Ethanol Production Bioenergy Recovery from Crude Glycerin References
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Biogas plant is a digester where anaerobic decomposition of the animal excreta/organic matter takes place and as a result biogas is produced. This gas is rich in methane and can be used for various purposes such as cooking, power generation and lighting. In case of anaerobic decomposition of the organic matter in the open, the gas (methane) produced directly goes into the atmosphere and increases the concentration of green house gases in. Use of biogas obtained through anaerobic decomposition in biogas plants converts methane into carbon dioxide and reduces the load of green house gases. The present paper discusses the potential of green house gas reduction by the use of biogas plants. The paper also discusses about the present status of biogas development in India, economics of biogas plant, selection of proper size of biogas plant along with the Government policy for providing incentive to the user for the construction of biogas plants.
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A review of publications encompassing bioenergy from residues of biofuel industries is presented here. Articles are within two years of 2012 and incorporate the topics of advanced biofuels and bioproducts for current and future biorefineries.
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This research aims to give an overview on how to improve the biogas yeild in Balinese digester plants using various co-substrates which are available in Bali. A series testing on the digestibility of substrates were set up either in the field or in the biogas laboratory. In-field analyses like testing the CO 2 -content and taking samples from digested manure were undertaken. Analyses such as dry matter (DM) and organic dry matter (oDM) determination, pH measurement and FOS/TAC were handled in the biogas laboratory. The huge number of different fruits in Bali gives a good opportunity to use their wastes like Durian hulls and Banana peelings, which can not be used anymore, as co-substrates in biogas plants. The results of these investigations allow to estimate the additional biogas yield, when adding co-substrates to a cow manure biogas plant.
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Sponsored by the Bioenergy and Biofuel Task Committee of the Environmental Council of the Environmental and Water Resources Institute of ASCE.
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The main technical procedures of comprehensive utilization of biogas residues and biogas slurry in Linzhang County were introduced from the aspects of construction of biogas digesters,property management,processing enterprises and base construction,then the economic,ecological and social benefits were analyzed.The recycling mode of biogas residues and biogas slurry in Linzhang County were briefly introduced taking the biogas stations of Ganglingcheng area in Linzhang town of Linzhang County.
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In order to effectively solve the short cycle problem,research the use of biogas digesters in rural areas in Shanxi Province.Combining the Shanxi rural realities and improved the structural form of the traditional biogas digester.Through adding pretreatment tank to provide heat for biogas digester.And add thermal insulation materials for digesters wall,inlet and outlet to achieve the purpose of increasing biogas pool temperature in winter.Take the Yulin City for example,through the theoretical calculations and experimental,proved the biogas yield of biogas digesters can be achieved above 0.1 m3/(m3·d)in winter minimum temperatures,and the biogas from a 6～8 m3 digester could satisfy the daily energy requirements of a common household.
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