biogas digester Articles

  • Peristaltic Pumps excel in Anaerobic Digestion & Biogas applications

    Biogas is a natural gas also known as biofuel or biomass and is produced by breaking down organic material such as household waste, manure and crops grown specifically for biofuel with temperature-sensitive microbes and capturing the by-products. In practice, it is difficult to find a pumping system for this application. Why? The pumps needs to handle fluid media as well as gas parts ...

  • Anaerobic Digest

    Boulder, Colorado: U.S. Distributed Renewables Forecast Published Navigant Research, a market research and consulting firm in Boulder, recently published the “U.S. Distributed Renewables Deployment Forecast, 2016-2025.” The report notes that deployment of distributed renewables, such as wind, solar and anaerobic digestion facilities, in the U.S. has accelerated in the last ...


    By BioCycle Magazine

  • Anaerobic Digest

    Washington, DC: NOSB Considers Digestate Use Petition The National Organic Standards Board (NOSB) of the U.S. Department of Agriculture (USDA) has agreed to consider a petition from Cenergy USA, the makers of Magic Dirt™, to allow use of digestate from anaerobic digestion plants in organic agriculture. Magic Dirt is made from digested dairy manure fibers. The soil amendment products ...


    By BioCycle Magazine

  • Anaerobic Digest

    Wilsonville, Oregon: Food Scraps Digester Proposed An anaerobic digester with capacity to process 50,000 to 70,000 tons/year of commercial food waste is being proposed in Wilsonville by Sustainable Organics Recycling Technology (SORT) Bioenergy. Wilsonville is in the Portland metro area. Currently, a portion of commercial food scraps from the metro area are hauled to the ...


    By BioCycle Magazine

  • Development of household biogas digesters and its economic analysis in China

    During the development of biogas digesters, a problem, which is how to appraise the economic benefits, always exists. This paper mainly discusses the necessity of cost-benefit analysis on biogas digesters, clearly defines some vague concepts during the analysis, tells how to quantitatively analyse the environmental benefits, and affirms the role of the government and the rural families.Keywords: ...


    By Inderscience Publishers

  • LBV Captures Biogas from Anaerobic Digestion of Dairy Wastewater

    The Customer: Laticínios Bela Vista Ltda. (LBV) is the fifth largest dairy food producer in Brazil with three plants processing over 3 million liters of milk per day. The company makes over 100 different products for LBV’s brands: Piracanjuba, Pirakids, Leitbom, and others. The Customer’s Needs: LBV expanded their plant in Bela Vista de ...

  • Autogenerative high pressure digestion: anaerobic digestion and biogas upgrading in a single step reactor system

    Conventional anaerobic digestion is a widely applied technology to produce biogas from organic wastes and residues. The biogas calorific value depends on the CH4 content which generally ranges between 55 and 65%. Biogas upgrading to so-called ‘green gas’, with natural gas quality, generally proceeds with add-on technologies, applicable only for biogas flows >100 m3/h. In the concept of ...


    By IWA Publishing

  • Biogas digesters for Vietnamese: a multi-partner national Biodigester program in Vietnam

    Water and sanitation are one of the most pressing issues facing people in rural Vietnam. Of particular difficulty for sanitation advocates in Vietnam is the habit of using raw feces to fertilize rice fields, with the result of exposing human excreta to the environment. This leads to water and soil contamination and to widespread disease outbreaks. The UN estimated that, in 2010, only 18% of rural ...


    By IWA Publishing

  • Biogas digesters for Cambodians: A multi-partner national biodigester program in Cambodia

    Water and sanitation are one of the most pressing issues facing people in rural Cambodia. Of particular difficulty for sanitation advocates in Cambodia is the old habit of open defecation, with the result of exposing human excreta to the environment. This leads to water and soil contamination and to widespread disease outbreaks. The UN estimated that, in 2008, only 23% of ...


    By IWA Publishing

  • Modelling of anaerobic digester biogas production: case study of a pilot project in Morocco

    An anaerobic digestion pilot system was implemented in June 2010 in the Moroccan village of Dayet Ifrah. The input material consists of toilet wastewater and cattle manure. Biogas is produced under anaerobic conditions. It is used for heating and cooking. This biogas system could be an useful sanitation technology due to its ability to treat wastewater. The biogas system was monitored over 86 ...


    By IWA Publishing

  • Analytical approach for predicting biogas generation in a municipal solid waste anaerobic digester

    The increasing worldwide industrialization, urbanization and population explosion in major metropolitan cities have significantly affected the amount of wastes generated from municipal solid wastes (MSW). Beukering et al., (1999) accounted for industrialization as an important factor that increases waste generation. Anand (1999) focused on urbanization as an important variable in waste ...


    By University of Tehran

  • 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% ...


    By IWA Publishing

  • The economics of advanced digestion

    Abstract Historically, the focus sewage sludge digestion was to stabilise the sludge and reduce the odour emitted. Pathogen reduction, solids destruction and biogas production then became important. In recent years a number of advanced digestion processes have become available which can be added to the conventional digestion process. Initially advanced treatment methods for treating sludge were ...


    By Cambi Group AS

  • January Anaerobic Digest

    San Francisco Bay Region, California: ABC Digester Operator Training Course The American Biogas Council (ABC) has organized a 3-day, hands-on operator training course, February 6-8, 2018 in the San Francisco Bay area, that focuses on digester operations overall with an additional emphasis on renewable natural gas (RNG) and codigestion at wastewater treatment plants. Each morning starts ...


    By BioCycle Magazine

  • Financing an anaerobic digester

    LENDERS are generally well disposed to projects that diversify revenues while lowering costs and mitigating risks. Add a ready source of equity and you are well on the way toward financing a project that is a win-win proposition for the lender and the project developer. Such is the case with the anaerobic digester project at Geerlings Hillside Farm (GHF). The Geerlings's 8,000-head hog farm is ...


    By BioCycle Magazine

  • Anaerobic co-digestion of sewage sludge and primary clarifier skimmings for increased biogas production

    The objective of the study was to identify the impact of co-digesting clarifier skimmings on the overall methane generation from the treatment plant and additional energy value of the increased methane production. Biogas production from co-digesting clarifier skimmings and sewage sludge in pilot-scale fed-batch mesophilic anaerobic digesters has been evaluated. The digester was fed with ...


    By IWA Publishing

  • Velocity gradient as a tool to characterise the link between mixing and biogas production in anaerobic waste digesters

    Whilst the importance of mixing in anaerobic digesters to enhance process performance and gas production is well recognised, the specific effects of mixing regime on biogas production are not clear. Here, the velocity gradient is used to demonstrate the importance of minimally mixed zones in a digester, with computational fluid dynamics (CFD) models indicating that 20–85% of a ...


    By IWA Publishing

  • Novel anaerobic digestion process with sludge ozonation for economically feasible power production from biogas

    A novel process scheme was developed to achieve economically feasible energy recovery from anaerobic digestion. The new process scheme employs a hybrid configuration of mesophilic and thermophilic anaerobic digestion with sludge ozonation: the ozonated sludge is first degraded in a thermophilic digester and then further degraded in a mesophilic digester. In small-scale pilot experiments of the ...


    By IWA Publishing

  • Anaerobic digestion of aliphatic polyesters

    Anaerobic processes for the treatment of plastic materials waste represent versatile and effective approach in environmental protection and solid waste management. In this work, anaerobic biodegradability of model aliphatic polyesters, poly(L-lactic acid) (PLA), and poly(ɛ-caprolactone) (PCL), in the form of powder and melt-pressed films with varying molar mass, was studied. Biogas production ...


    By IWA Publishing

  • Anaerobic co-digestion of municipal organic wastes and pre-treatment to enhance biogas production from waste

    Co-digestion and pre-treatment have been recognized as effective, low-cost and commercially viable approaches to reduce anaerobic digestion process limitations and improve biogas yields. In our previous batch-scale study, fat, oil, and grease (FOG) was investigated as a suitable potential co-substrate, and thermo-chemical pre-treatment (TCPT) at pH = 10 and 55 °C improved CH4 ...


    By IWA Publishing

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