biogas production Articles
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Case Study: Muffin Monster Protects Spanish Biogas Facility
Muffin Monster protects pumps, enhances productivity in biogas application Problem Low production and high maintenance in biogas production facility due to problem solids, viscous nature of sludge and a solids content exceeding 8 percent dry solids. Solution 30004-B150 Muffin Monster Click here to read the full ...
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Decolorization and biogas production by an anaerobic consortium: effect of different azo dyes and quinoid redox mediators
The inhibitory effect of azo dyes and quinoid compounds on an anaerobic consortium was evaluated during a decolorization process and biogas production. In addition, the impact of quinoid compounds such as lawsone (LAW) and anthraquinone-2,6-disulfonate (AQDS) on the rate of decolorization of Direct Blue 71 (DB71) was assessed. The anaerobic consortium was not completely inhibited under all ...
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Effect of different solid concentration on biogas yield and composition during anaerobic fermentation process
The anaerobic fermentation experiments were carried out on a self-manufactured bench scale anaerobic digester with pig dung as feed material. Under mesophilic digestion condition, effects of different solid concentration of feed on characteristics of biogas production were investigated. Results showed that daily average biogas production rate and total biogas yield were increased with the ...
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Effects of anaerobic fermentation residue of biogas production on the yield and quality of Chinese cabbage and nutrient accumulations in soil
Field experiments were carried out to study the effect of different anaerobic fermentation residue of biogas production treatments on yield and quality of Chinese cabbage (Brassica rapa L. var. shanghaisis) and nutrient accumulation in soil. The results indicated that the yield and quality (Vitamin C and nitrate content) of Chinese cabbage were significantly improved. The highest yield of 1364.31 ...
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Quantification of leakage in batch biogas assays
Avoiding leaks is essential for accurate measurement of biogas production by batch assays. Here we present a simple method for detecting leaks and correcting results, based on the change in bottle mass during incubation. Three experiments were carried out using pure chemicals, wastewater sludge, and other complex substrates to test and demonstrate the method, and leaks were detected in all ...
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Influence of cyanide on the anaerobic degradation of glucose
Bacteria in the anaerobic degradation process convert the substrate to the final products methane and carbon dioxide. Toxic substances can change the process substantially. The purpose of this study was to investigate the influence of toxic cyanide on biogas production in anaerobic degradation of glucose at 40°C. The OxiTop respirometric system offers a quick and simple method for measurement of ...
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Effect of thermal and alkaline pretreatment of giant miscanthus and Chinese fountaingrass on biogas production
Giant miscanthus (Miscanthus×giganteus) and Chinese fountaingrass (Pennisetum alopecuroides (L.) Spreng), cultivated for landscaping and soil conservation, are potential energy crops. The study investigated the effect of combined thermal and alkaline pretreatments on biogas production of these energy crops. The pretreatment included two types of alkali (6% CaO and 6% NaOH) at 22, 70 and 100 ...
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Aerobic thermophilic bacteria enhance biogas production
The enhancing effect of aerobic thermophilic (AT) bacteria on the production of biogas from anaerobically digested sewage sludge (methanogenic sludge) was investigated. Sewage sludge (5%, w/w) was incubated at 65°C with shaking for a few months to prepare the AT seed sludge. AT sludge was prepared by incubation of the AT seed sludge (5%, v/v) and sewage sludge (5%, w/w) at 65°C with shaking. The ...
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Anaerobic treatability and biogas production potential of selected in-mill streams
Biochemical methane potential assays (BMP assays) were performed to study the potential of anaerobic treatment of in-mill wastewaters. The assay results indicated that condensate and the BCTMP effluent, which are currently treated with the anaerobic internal circulation reactors, were the best streams for anaerobic treatment because of their relatively high degradability (>80%) and initial rates ...
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Anaerobic digestion foaming in full-scale biogas plants: a survey on causes and solutions
Anaerobic digestion foaming is a common operation problem in biogas plants with negative impacts on the biogas plants economy and environment. A survey of 16 Danish full-scale biogas plants on foaming problems revealed that most of them had experienced foaming in their processes up to three times per year. Foaming incidents often lasted from one day to three weeks, causing 20–50% ...
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Anaerobic treatment of crude glycerol from biodiesel production
In this study, we evaluated the use of an up-flow anaerobic sludge blanket (UASB) reactor to treat crude glycerol obtained from cottonseed biodiesel production. The laboratory-scale UASB reactor (7.0 L) was operated at ambient temperature of 26.5°C with chemical oxygen demand (COD) concentrations between 0.5 and 8.0 g/L. The volatile fatty acid contents, pH, inorganic salt contents and biogas ...
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The Future of Biogas: Why Biogas Analyzers are Key to Advancements in Renewable Energy
As the world continues to shift towards sustainable energy sources, biogas is emerging as a valuable and versatile renewable energy option. Biogas is produced through the decomposition of organic matter, such as agricultural waste and sewage, and can be used to generate electricity, heat, and fuel. However, to get the most out of this resource, it is crucial to understand and monitor the quality ...
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The feasibility of trace element supplementation for stable operation of wheat stillage-fed biogas tank reactors
The aim of this study was to investigate the effect of trace element supplementation on operation of wheat stillage-fed biogas tank reactors. The stillage used was a residue from bio-ethanol production, containing high levels of sulfate. In biogas production, high sulfate content has been associated with poor process stability in terms of low methane production and accumulation of process ...
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The hydrolysis and biogas production of complex cellulosic substrates using three anaerobic biomass sources
In this study, the ability of various sludges to digest a diverse range of cellulose and cellulose-derived substrates was assessed at different temperatures to elucidate the factors affecting hydrolysis. For this purpose, the biogas production was monitored and the specific biogas activity (SBA) of the sludges was employed to compare the performance of three anaerobic sludges on the degradation ...
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Qualvista Biogas Monitoring in Ämmässuo landfill site, Finland Case Study
Qualvista Biogas Monitoring solution was deployed in HSY’s Ämmässuo landfill site in Finland, one of the largest biogas production facilities in Europe. This installation was completed in April 2016, and was preceeded by a successful pilot phase cooperation during the Qualvista Biogas Monitor product development during 2015 and 2016. HSY Operational Manager Sauli Kopalainen is ...
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Roles of Microorganisms in Anaerobic Digestion and Biogas Production
Anaerobic digestion is a biological process in which microorganisms break down organic matter without oxygen and transform them into end-products, including biogas, an energy-rich gas comprised of methane (CH4), carbon dioxide (CO2), and other trace amounts of gases. Anaerobic digestion can be summarized as a four-stage process (1) hydrolysis, (2) acidogenesis, (3) acetogenesis, and (4) ...
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Towards a sustainable use of food waste: influence of urea on biogas production potentials of selected fruit wastes in Addis Ababa, Ethiopia
This study evaluates the influence of adding urea on biogas (methane) production potentials of selected fruit wastes. Using standard methodology, the finding revealed that all the fruit wastes are ideal substrates for biogas production. The ultimate biogas yield on anaerobic digestion of fruit waste feeds, avocado, banana, and mango, are 0.48, 0.57, 0.53 l/g VS without urea supplement and 0.76, ...
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European Commission to Increase Biogas Production for Energy Independence
The European Union is looking to decrease its energy dependence on Russian gas. The EU Commission has proposed to increase the bio-methane production from 3 billion cubic meters in 2020 to 35 billion cubic meters by 2030. It is an irony that the gas package for legislation presented by the European Commission in December 2021 might not have been a priority for the French EU Council Presidency, ...
By AtmosPower
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Case study: Roager Bioenergi
Substrate: Energy crops, animal manure, other organic material Biogas flow: 1.200 Nm3/h H2S inlet: 2.000 ppm H2S H2S outlet: 50 ppm H2S Year of Installation: 2011 Roager/Lundsby Bioenergi is located in the southern part of Denmark. It is a unique biogas plant as the input is a mixture of animal waste, energy crops and other kinds of biomass. In order to achieve the desired biogas production the ...
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New Biobang installed in Germany
In the future, a BioBANG technology will support the substrate digestion of the Blum biogas plant in the Vulkaneifel New installation of BioBANG in Renè Blum’s biogas plant in the Vulkaneifel district of the Rhineland. BioBANG, installed in recirculation on the main digester, ensures greater digestion of the most difficult substrates. This not only increases the biogas production, ...
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