biogas methane Articles
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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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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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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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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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From the biogas to vehicle fuel
The biogas consists mainly of methane and carbon dioxide. Other components can be water and sulphur, mainlyhydrogen sulphide. To be able to use the biogas as vehicle fuel or to distribute it in natural gas grids the gas has to becleaned and upgraded. The biogas is upgraded by removing carbon dioxide to raise the calorific value and create a gaswith constant quality. One of the techniques to ...
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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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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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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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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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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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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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The gas upgrading plant in Kockte (Germany) - Case Study
Location: Köckte (Germany) Capacity: 350 Nm³/h biomethane Self-consumption: 0,23 kWel/Nm³ crude gas Features: First fully integrated biogas upgrading plant using membrane technology in a three-stage process. Overview of the gas upgrading plant in Köckte The EnviThan gas upgrading plant in the district Altmarkkreis Salzwedel in Saxony-Anhalt is the first fully integrated ...
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Evaluation of treatment potential, biogas generation and sludge properties of an anaerobic claridigester
The anaerobic process for the treatment of municipal and industrial wastewater has been in practice for over a century. Apart from treatment of wastewater, the process has the advantage of lower sludge and biogas production that can save energy. Application of this process in a primary clarifier in such a way that there is simultaneous digestion of primary settled sludge and organic removal ...
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Increased biogas production in a wastewater treatment plant by anaerobic co-digestion of fruit and vegetable waste and sewer sludge – A full scale study
Anaerobic digestion is a well established technology for the reduction of organic matter and stabilization of wastewater. Biogas, a mixture of methane and carbon dioxide, is produced as a useful by-product of the process. Current solid waste management at the city of Prince George is focused on disposal of waste and not on energy recovery. Co-digestion of fresh fruit and vegetable waste with ...
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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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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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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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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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