methane biogas Articles
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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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Methane Number
Did you know that the methane number of a gas provides an indication of the knock tendency of a fuel? It is a product of the different constituent gases within the natural gas, particularly the proportions of methane, ethane, propane and butane. Understanding the knock resistance is important when specificing an engine for a gas-powered combined heat and power plant. Methane, which has a high ...
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The Benefits of Biogas Conditioning
Abstract Anaerobic digestion is quickly becoming the choice technology for sewage sludge treatment at wastewater treatment plants, as the methane rich biogas produced is a valuable resource which can be used to generate electricity. In the oxygen restricted environment, a natural by-product of the anaerobic process is hydrogen sulfide, a harmful contaminant. Also present in the biogas are ...
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Treatment of corn ethanol distillery wastewater using two-stage anaerobic digestion
In this study the mesophilic two-stage anaerobic digestion (AD) of corn bioethanol distillery wastewater is investigated in laboratory-scale reactors. Two-stage AD technology separates the different sub-processes of the AD in two distinct reactors, enabling the use of optimal conditions for the different microbial consortia involved in the different process phases, and thus allowing for ...
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Increasing methane content in biogas and simultaneous value added product recovery using microbial electrosynthesis
Electrosynthesis of multi-carbon compounds from the carbon dioxide present in biogas is a nascent approach towards purification of biogas. Microbial electrosynthesis (MES) cells, fabricated using different electrode materials, were operated using different electrolytes and mixed anaerobic culture as biocatalysts in the cathodic chamber under an applied cathode potential of −0.7 V vs standard ...
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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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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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Portable biogas bottling plant: a practical approach for using biogas as transportation fuel in rural areas
Biogas contains about 65% methane, 30-35% carbon dioxide, traces of hydrogen sulphide and moisture. It has been observed that diesel engines get severely damaged when operated on biogas for long duration. Presence of these corrosive gases make biogas unsuitable for transportation application. By removing CO2 and trace acidic gases like H2S and moisture, biogas can be converted into natural gas ...
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Biogas recovery from a temperate climate covered anaerobic pond
New Zealand has over 1000 anaerobic waste stabilisation ponds treating wastewater from farms and industry. Traditional anaerobic ponds were not designed to optimise anaerobic digestion to produce biogas and are therefore uncovered, releasing biogas to the atmosphere, which can cause odour problems and contributes to GHG emissions. The biogas production and treatment performance of an anaerobic ...
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Project Minworth Sewerage Plant Case Study - Case Study
Location Minworth Year 2017 Project Type Biodome MINWORTH SEWAGE TREATMENT SITE SERVICES MORE THAN 1.7 MILLION PEOPLE IN THE BIRMINGHAM AND BLACK COUNTRY AREA. Powered entirely by Biogas produced through Anaerobic Digestion at the site itself. A modern solution was required to future-proof the plant for expansion and development. This unique wastewater engineering solution was ...
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Effect of solid-state NaOH pretreatment on methane production from thermophilic semi-dry anaerobic digestion of rose stalk
The effects of solid-state NaOH pretreatment on the efficiency of methane production from semi-dry anaerobic digestion of rose (Rosa rugosa) stalk were investigated at various NaOH loadings (0, 1, 2, and 4% (w/w)). Methane production, process stability and energy balance were analyzed. Results showed that solid-state NaOH pretreatment significantly improved biogas and methane yields of 30-day ...
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Hydrogen Production and Carbon Capture by Gas-Phase Methane Pyrolysis: A Feasibility Study
In order to reduce carbon dioxide (CO2) emissions, fossil fuels such as oil and natural gas must be replaced by climate-neutral alternatives in the medium and long term. In this regard, hydrogen (H2) is considered as one of the most promising carbon-free energy carriers, since it is already nowadays vastly used in the chemical industry, for instance for refining processes or the production of key ...
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Chances for Bio-LNG
Abstract An increasing effort is put into the utilization of organic waste streams in anaerobic digesters, producing useful products such as fertilizers and biogas. It becomes increasingly attractive to upgrade biogas to natural gas quality and consequently liquefy the gas to Bio-LNG. DMT Environmental Technology has been developing biogas treatment plants for over 25 years, closely following ...
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Recovering biomethane and nutrients from anaerobic digestion of water hyacinth (Eichhornia crassipes) and its co-digestion with fruit and vegetable waste
The potential to recover bioenergy from anaerobic digestion of water hyacinth (WH) and from its co-digestion with fruit and vegetable waste (FVW) was investigated. Initially, biogas and methane production were studied using the biochemical methane potential (BMP) test at 2 g volatile solids (VS) L−1 of substrate concentration, both in the digestion of WH alone and in its co-digestion with FVW ...
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Increasing biogas yield through addition of food waste
1. Introduction The Moosburg wastewater treatment plant has one 634,008 gallons anaerobic digester, which was designed to process a maximum 23,775 gallons/day of activated sludge at 3.5% solids. The AD is currently processing 17,170 gallons/day of sludge and producing 39decatherms/day of energy from biogas. The operators would like to better utilize their anaerobic digester to achieve energy ...
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Do you know everything you need to know about anaerobic digestion?
If you haven’t heard about anaerobic digestion yet, this blog post is the perfect place to start, and if you have, then you will know that technology is an ideal way for businesses to recycle their waste and cut their carbon footprint. Anaerobic digestion is an innovative treatment and an ideal way for businesses in the agricultural and industrial sectors to recycle their waste and cut ...
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Environmental and energetic benefits derived from the anaerobic digestion of agroindustrial wastes
Agrifood industry plays a relevant role in the economic development of the autonomous community of Extremadura (Spain), and generates vast volumes of wastes featured by both high polluting potential and moisture content. The present work reports on a detailed analysis of biogas generation from the anaerobic digestion of industrial tomato residues and slaughterhouse wastes, in this way, yields ...
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Capturing biogas energy to increase your business profits while safeguarding the environment
Methane is a biogas produced from swine or cow manure, as well as food processing and meat packing waste. Methane is a natural gas, that when left uncollected, contributes to the harmful greenhouse gases in the earth’s atmosphere. When biogas is captured under a cover and becomes concentrated, it creates a corrosive and toxic byproduct called hydrogen sulfide. The gas generates a rotten egg ...
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Xebec powers an energy revolution case study
Rumpke Landfill Biogas Project at a Glance: Type: Landfill biogas to pipeline-quality renewable natural gas Claim to fame: One of the largest gas recovery operations of its kind in the world Location: Cincinnati, Ohio Number of acres-landfill: 230 (93 hectares) Waste received annually: Two million tons Plant refining capacity: 15 million cubic feet of landfill gas per day Distribution: 25,000 ...
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Using biogas for combined heat and power
An integral part of the majority of anaerobic digestion facilities across the world is the CHP combined heat and power (CHP) engine. For the first time builder of a biogas plant, it is often neglected as the focus is on reducing the capital costs of the installation. However, the engine is integral to the plant, and is the key component in the production of renewable electricity, hence the ...
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