solid organic waste anaerobic digestion Articles

  • 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

  • Anaerobic Digestion technologies for the treatment of Municipal Solid Waste

    Anaerobic Digestion (AD) of Municipal Solid Waste (MSW) is used in several regions worldwide and systems span a range of design options including wet, dry, thermophilic, mesophilic, batch, continuous, single-stage, and multi-stage configurations. This paper reviews a number of commercial and emerging solid waste digestion systems discussing performance and costs. Systems yield 250?710 m³ of ...


    By Inderscience Publishers

  • Anaerobic digestion of Organic Fraction of Municipal Solid Waste (OFMSW) in two-phase system

    In view of recovering energy resource from the treatment of Organic Fraction of Municipal Solid Waste (OFMSW), anaerobic digestion of OFMSW prior to aerobic composting as post-treatment was considered. This study aimed to determine the operational characteristics and efficiency of a two-phase system composed of a fed-batch hydrolysis reactor (phase I) and a methanogenic Upflow Anaerobic Sludge ...


    By Inderscience Publishers

  • Perspectives of composting and anaerobic digestion technologies for the treatment of organic fraction of municipal solid waste in Europe and Asia

    The development and implementation level of composting and anaerobic digestion technologies for municipal biowaste management in Europe and Asia are different in many aspects. The progress of these technologies generally depends on the lifestyle, waste generation rate, waste characteristics, awareness level, acceptability, market value and other economic factors. In Europe, regulatory directives ...


    By Inderscience Publishers

  • Effect of temperature on composting residual Organic Fraction of Municipal Solid Waste (OFMSW) after anaerobic digestion

    Aerobic composting is generally considered as a necessary post-treatment for residual solids after anaerobic digestion. This study aimed to determine the effects of temperature on biodegradation, microbial population density in composting residual OFMSW after anaerobic digestion. Four composting runs at different set temperatures were conducted. The rate of ...


    By Inderscience Publishers

  • Effect of organic loading rate on the performance of two-stage anaerobic digestion of the organic fraction of municipal solid waste (OFMSW)

    Two-stage anaerobic digestion of the organic fraction of municipal solid waste (OFMSW) was carried out: hydrolysis and acidogenesis in a continuous anaerobic hydrolytic leach bed (AHLB) reactor loaded at different rates (Bv = 3.8–7 gVSSL−1d−1) and methanogenesis of leachates, diluted with municipal wastewater in an upflow anaerobic ...


    By IWA Publishing

  • Enhanced anaerobic digestion of waste activated sludge of low organic content in a novel digester

    A novel digester, termed an internal circulation anaerobic digester (ICAD), was developed to intensify sludge digestion. It consists of reaction zone, settling zone, thickening zone, riser and downcomer. Internal circulation in the digester is intensified by backflow biogas. The mesophilic ICAD treating thermal pretreated waste activated sludge with volatile suspended solids (VSS)/suspended ...


    By IWA Publishing

  • Residential SSO To High Solids Anaerobic Digestion

    Source separated organics, including kitchen and garden waste, are processed in a dry AD plant. Resulting biomethane is injected into an adjacent natural gas pipeline. Winterthur, a city in the canton of Zürich in northern Switzerland, has the country’s sixth largest population, estimated at more than 100,000. In 2011, the City of Winterthur launched a 2050 energy policy to ...


    By BioCycle Magazine

  • Mesophilic and thermophilic anaerobic digestion of source-sorted municipal solid waste

    A change in existing collection systems for household waste is presently in progress in many Swedish municipalities. The objective is to separate the decomposable fraction from non-biodegradable waste in order to facilitate biological treatment and recycling of nutrients. The main reason for this development is the effort to replace landfilling of nutrient-rich, wet organic waste with sustainable ...


    By ORBIT e.V.

  • Comparative assessment of anaerobic digestion of municipal solid waste at mesophilic and thermophilic temperatures

    Anaerobic digestion is an environmentally sound treatment option for the organic fraction of municipal solid waste (OFMSW) and simultaneously producing methane gas which is a source of renewable energy. The COD reduction of the substrate was 72% for the mesophilic condition and 72.3% for the thermophilic condition. 1200 cm³ of methane was produced in the mesophilic condition and 1260 cm³ in the ...


    By Inderscience Publishers

  • Performance study for anaerobic digestion of municipal solid waste in a single phase reactor

    Anaerobic Digestion (AD) has been up to now essentially applied to wastewater. However, anaerobic treatment of organic solid waste fits well with the new requirements for waste management. A batch study of vegetable market waste composed at various solid concentrations was studied in a single phase anaerobic reactor. Prior to this, studies were also carried out in aspirator bottles of different ...


    By Inderscience Publishers

  • Environmental efficiency of composting versus anaerobic digestion of separately collected, organic waste

    Environmental policy in the Netherlands among others aims at closing material cycles and minimising the amount of waste requiring final disposal. In this policy the highest priority is given to the prevention of waste production followed by (in descending order of preference) reuse, incineration with energy recovery and sanitary landfilling. In the implementation of this solid waste policy also ...


    By ORBIT e.V.

  • Bio-fuels- Anaerobic digestion

    Anaerobic digestion is a series of processes in which micro organisms break down biodegradable material in the absence of oxygen. It is widely used to treat wastewater sludges and organic (agricultural) wastes.  As part of an integrated waste management system, anaerobic digestion reduces the emission of gas into the atmosphere. Anaerobic digestion is a renewable energy source because the ...


    By Triangle Ltd

  • Anaerobic Digestion—What Are the Economics?

    Although solid waste AD facilities are just starting to emerge, haulers and their customers may see some benefits if the development trend continues. A Pro Forma Model objective can be constructed for strategic planning of an anaerobic digestion facility. Anaerobic digestion (AD) of food wastes in the U.S. is a developing market that is poised for continued growth in many regions. ...


    By Waste Advantage Magazine

  • Anaerobic Digestion at Dairy Farms

    The need to upgrade dairy waste management practices to overcome pollution problems is leading more farmers to seek solutions with anaerobic digestion technology. Two recent examples of this trend are underway at California sites. The Cal Poly Dairy is located adjacent to the California Polytechnic State University campus in San Luis Obispo. The dairy milks 180 cows with a total population of ...


    By BioCycle Magazine

  • Thermal hydrolysis pre-treatment for high solids anaerobic digestion

    The City and County of San Francisco completed a two-year pilot study of pre-treatment processes to mesophilic anaerobic digestion for improved biosolids stabilization and production of biosolids suitable for unrestricted reuse (class A biosolids). The results of this effort will help in the design of the new Solids Handling Facility (SHF) at the 11 m3/s Southeast Water Pollution Control Plant ...


    By Cambi Group AS

  • Anaerobic Digestion Of Compostable Bags

    Dry anaerobic digestion facility in Luxembourg successfully treats mixed yard and food waste collected in compostable plastic bags. Preprocessing, anaerobic digestion and composting operations are enclosed at the Syndicat Minett-Kompost facility. While the value of compostable plastic bags to increase participation in residential source separated organics (SSO) programs is well-recognized, much ...


    By BioCycle Magazine

  • Solid Waste District Pilots Dry Fermentation Digester

    Special events, restaurants and other commercial businesses in the Monterey region of California have found a way to close the compostable waste loop and produce usable electricity at the same time. The electricity is produced via dry fermentation anaerobic digestion (AD) units that came online this spring at the Monterey Regional Waste Management District (MRWMD) in Marina. The pilot AD ...


    By BioCycle Magazine

  • Digester Developers Target Mixed Organic Waste Streams

     emerging group of commercial companies see a viable business opportunity in North America around building, owning and operating larger scale anaerobic digestion (AD) facilities to process mixed organic waste streams. In some instances, the projects being proposed and constructed only include anaerobic digester operations. In others, there is a combination of digestion with back-end ...


    By BioCycle Magazine

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