animal waste digestion Articles

  • Matching of an anaerobic animal waste digester with a dual-fuel generator unit

    This paper describes a scientific method for matching an anaerobic fermentation digester using animal dung with a diesel engine power-generating unit, in such a way as to specify the digester capacity to be suitable for various specific energy needs. An experimental model consisting of an Indian-type digester connected to a constant speed, single cylinder 3 kW diesel engine, was designed, ...


    By Inderscience Publishers

  • 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

  • Latest Progress in Anaerobic Digestion

    Compared to countries like Germany and Denmark, the United States and Canada have a long way to go in creating the fundamental policy incentives and regulatory mandates that will encourage market development for anaerobic digestion (AD). Someone recently asked me how many years it would take to deploy AD systems on farms in North America that are large enough to economically use them. Given ...


    By BioCycle 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

  • 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

  • Farm digesters for small dairies in Vermont

    THROUGH its award-winning Cow Power program, Central Vermont Public Service (CVPS), a Vermont utility headquartered in the city of Rutland, is helping dairy farmers diversify their incomes by turning manure into electricity. The farmers process manure in anaerobic digesters to generate power, which CVPS customers voluntarily pay a premium to purchase. In addition to income from electricity sales, ...


    By BioCycle Magazine

  • Animal Manure or Sludge Organic Fertilizer Production

    Introduction of Animal Manure or Sludge Organic Fertilizer Production Line Organic fertilizer production line is designed for producing organic fertilizer from animal manure or sludge, without any chemical ingredients. As chickens, pigs have a poor digestion, can only consume 25% of the nutrients, so other 75% of feed nutrients with feces discharge can be produced to the dry ...

  • Filter manure slurries directly before, after, or in place of anearobic digesters with a reverse osmosis VSEP membrane system, providing potable water for the animals and a concentrated nutrient feedstock for fertilizer.

    If constructed and managed properly, the age-old lagoon method of manure handling is a reliable method of storing and treating livestock waste. Lagoon storage followed by sprayfield application on local farms has proven to be a very symbiotic and effective method throughout the ages. However, the recent trend in the hog production and the cattle industry is towards larger centralized operations ...


    By New Logic Research, Inc.

  • Digester Developer Taps Natural Gas Markets

    IN the late 1990s, Dan Eastman and two colleagues were researching business opportunities in the renewable energy industry. They were looking for a commercially viable technology that could take renewable energy from an experimental phase to a solid business investment. In 1999, Eastman and his partners founded Microgy, Inc., with its base in Wisconsin. The company licensed the Xergi anaerobic ...


    By BioCycle Magazine

  • Industry Takes Shape: Why Digesters Make Dollar Sense Now

     THIRTY years ago, when I was a college student studying ways to convert manure to electricity, we speculated that the 1970s would be the decade of the innovators, the 1980s for the launch of operating projects, and the 1990s when the mainstream adopted the technology. Now I think our predictions for the mainstream were ten to 15 years premature — but it is happening! During the 1990s, the ...


    By BioCycle Magazine

  • Project aims to produce fertilizer from wastes

    With the highest cattle density in northeastern Wisconsin and urban sprawl sprawling, Brown County has accelerated its investigation into how to handle growing amounts of dairy manure and industrial wastes spread on a diminishing land base.Applying waste on limited crop acreage has led to groundwater contamination issues and pollution problems of lower Green Bay.The solution lies in a value-added ...


    By FEECO International, Inc.

  • Prairie `agri-preneurs` battle megafarm waste

    Gwyn Morgan is the retired founding CEO of EnCana Corp. The revolting image of foaming green sludge washed up on a Lake Winnipeg beach in the Aug. 24 edition of Maclean's is part of, as the accompanying article states: "a putrid green mat, twice the size of PEI, and clearly visible from space ... The culprit isn't oil spills, toxic waste or even pesticides, but nutrient overloading from ...


    By Himark bioGas Inc

  • Ohio Takes Aim At Food Waste Composting

    WHILE RECYCLING of paper and yard trimmings have grown rapidly in Ohio in the last 30 years - now up to 50 percent for paper and 62 percent for green materials, the recovery rate for food residuals is at less than three percent of nearly 96 million tons generated annually. To turn things around, the Ohio EPA and its Solid Waste Management Division have teamed up to get the word out about ...


    By BioCycle Magazine

  • Independent review of retrofitting Cambi to mad

    ABSTRACT Denmark has taken a very positive view of recovering energy from organic wastes by anaerobic digestion (AD) and then using  the digestate (digested material) on land. Substituting CHP (combined heat and power) from AD for fossil energy is part of  the national energy plan. Co-digestion of manure, putrescible waste and biosolids is becoming increasingly common. Part of  ...


    By Cambi Group AS

  • Commercial composting provides food for thought

    The retail sector and food manufacturers produce a mountain of waste but, unlike householders, they cannot simply throw it in the compost and wait for it to rot down. The Compost Association told edie about the obstacles in the way of recycling waste from the commercial sector. Compared to household domestic waste, biodegradable matter from the retail and catering sector represents only a small ...

  • Biology at work

    Leading edge renewable energy technology came to Woodstock this week, courtesy of Canada's Outdoor Farm Show. Trevor Nickel, assistant general manager with Highmark Renewables Research, showed off a mobile Integrated Manure Utilization System (IMUS) biogas unit transported from Alberta to Ontario just for the three-day show. The newest exhibit documents the process of anaerobic digestion and ...


    By Himark bioGas Inc

  • Beer: Making Bread And Mushrooms

    A traditional brewery of today (see model of traditional brewery below), that brews beer according to the German purity standards, produces beer, but also produces organic waste streams and lost energy. This waste from the brewery is organic material which means that its polluting effect could be seen as minimal. However, given the quantity of water needed for the large volumes of beer produced ...

  • Entrepreneur Connects Generators To AD

    A Northeast company brings anaerobic digestion and renewable energy to the feedstock sources in Ohio and New York State. Western New York is one of the top dairy-producing regions in the U.S. The by-products of making milk, cream, yogurt and other dairy products have certain characteristics that make them ideal fuel for anaerobic digesters designed to produce methane gas for the ...


    By BioCycle Magazine

  • Lowara pumps drive livestock operations

    Animal output processed for safe disposal, reuse and renewable energy Xylem scope Xylem Lowara have installed several different types of pumps in this process cycle. Ranging from the DLV submersible pump fitted with Vortex impeller used in the pressurization of wastewater obtained from the separation of the digestate. Various high efficiency e-range pumps ...


    By LOWARA - a Xylem brand

  • Syracuse, New York: AD Adds To Dog Treat Bakery’s Sustainability

    Full Circle Feed in Syracuse makes healthy, environmentally-sustainable dog treats with unused meats, vegetables, fruits, and breads from restaurant buffets that were prepared but not served. It recently won the grand prize of $10,000 in Green America’s Fall 2016 People & Planet contest in the category of sustainable products and services for pets and animals. “Full Circle Feed ...


    By BioCycle Magazine

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