cow-calf operator Articles

  • Cow-pattie power

    On a massive cattle feedlot located outside the town of Vegreville, Alta., the pungent odour of cow manure is masked by the sweet smell of the province’s energy future. Turning cattle dung — “brown gold,” as some call it — into green power and other valuable byproducts is a made-in-Alberta energy solution that is not only sustainable and energy efficient, but also ...


    By Himark bioGas Inc

  • Clean, green and powered by cow patties

    Two dome-like structures rise out of the thick ice fog of a Prairie winter day. From a distance, a science-fiction city seems to be taking shape on the rolling grasslands of east-central Alberta. Then, as you draw near, another sensation takes hold – the oppressively pungent odour of cow manure. On this day, the enveloping fog is making the smell worse than usual, explains Bern ...


    By Himark bioGas Inc

  • Land Application System (LAS), Design, Operation & Maintenance

    PLANTECO specializes in the use of green plants (phytoremediation) for the management of nutrients at municipal and industrial waste facilities and livestock feeding operations. Land Application Systems (LAS) consist of vegetated irrigation fields with selected plants that utilize the effluent wastewater as an efficient source of water and plant nutrients including nitrogen, phosphorus and ...


    By Planteco, Inc

  • New Mexico Business Weekly Passing biogas: R-Qubed project converts cow manure to methane

    Some locals sarcastically joke that the stretch of dairy farms along Interstate 10 south of Las Cruces should be re-named “Buenos Aires” (fresh air). It’s a reference to a less than aromatic sector of I-10 in southern New Mexico, not a reflection on the capital of Argentina. But that soon might change, thanks to a US$72 million plan by R-Qubed Energy Inc. of El Paso to build ...


    By entec biopower gmbh

  • CAFO Manure Treatment-Struvite Removal and Struvite Prevention

    CAFOs (Confined Animal Feeding Operations) face struvite in their manure holding ponds and manure lagoons, as well as their recirculation systems. On a dairy farm in Neb. that operated with 15,000 milking cows, they were generating 500,000 gal per day of wastewater laden with manure.  Over the summer, they noticed a reduction in their pumping capacity because the first lagoon was ...


    By Struvite Removal

  • The water footprint of soy milk and soy burger and equivalent animal products

    As all human water use is ultimately linked to final consumption, it is interesting to know the specific water consumption and pollution behind various consumer goods, particularly for goods that are waterintensive, such as foodstuffs. The objective of this study is to quantify the water footprints of soy milk and soy burger and compare them with the water footprints of equivalent animal products ...


    By IWA Publishing

  • Regional roundup

    ANAEROBIC DIGESTER ON UNIVERSITY CAMPUS The University of Guelph’s Ridgetown Campus, part of the Ontario Agriculture College (OAC), received an investment of more than US$2.6 million for construction of an anaerobic digester through the Federal Development Agency for Southern Ontario. OAC, with its Center for Agricultural Renewable Energy and Sustainability, views the digester as “a ...


    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

  • Reuse of dairy lagoon wastewater through SDI in forage crops

    Abstract California has become the leading dairy products producing state in the USA. This has resulted in farms commonly milking several thousand cows per day. The care and feeding of the animals has produced large waste streams commonly collected and stored in lagoons. Environmentally safe handling and reuse of the lagooned wastewater is the objective of this study. A system of ...


    By Geoflow, Inc.

  • animal feed pellet machine for home use and poultry farm to make best pelleted feed

    the advantages of this animal feed pellet machine are nice looking in shape, simple in structure, easy in operation and service, safe in solidity, small in volume. and light in weight etc. No special training needed and operation available through manual,The pellet mill accepts the dry ...


    By Victor Pellet Mill

  • Florida Dairy Succeeds With AD System

    North Florida dairy with 6,100 mature cows and 5,500 replacements installed anaerobic digestion system that is yielding multiple benefits. Dairy farming in Florida has financial and logistical challenges, including hot, humid summers; high electrical costs; access to fresh water; odor; greenhouse emissions and sandy soil issues. Alliance Dairies in Trenton, Florida has found sustainable ...


    By BioCycle Magazine

  • Anaerobic co-digestion of cattle manure with rice straw: economic & energy feasibility

    Rice straw (RS) is one of the most abundant wastes generated in Valencia (Spain). Traditional waste disposal methods are harmful to the environment. The straw burning emits large amounts of toxic air pollutants and the straw burying produces uncontrolled anaerobic fermentation in the soil. The aim of this research was to evaluate the feasibility of cow manure anaerobic co-digestion with RS in a ...


    By IWA Publishing

  • Case Study - Manure Magic

    Manure Magic is a patented product that can help support successful manure management programs throughout the world, such as field applications as fertilizer, because of its ability to liquefy the manure, which makes it much easier to administer. Application Examples The increase in regulatory requirements in dealing with animal waste solids has required growers to closely ...


    By DryLet

  • Nitrogen losses from dairy manure estimated through nitrogen mass balance and chemical markers

    Received for publication February 13, 2009. Ammonia is an important air and water pollutant, but the spatial variation in its concentrations presents technical difficulties in accurate determination of ammonia emissions from animal feeding operations. The objectives of this study were to investigate the relationship between ammonia volatilization and 15N of dairy manure and the feasibility of ...

  • Building a Business with Nutrient Management

    Laurelbrook Farm is a third-generation dairy farm in East Cannan, Connecticut. The Jacquier family owns 275 acres, and rents an additional 2,500 acres for cropping, to support a herd of 830 cows. The family began composting three years ago as part of the farm’s nutrient management plan, as well as to determine the market for compost in the area. “In 2003 the Environmental Protection ...


    By Eggersmann GmbH

  • 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

  • Closed-Loop Companies

    At Big Rock Brewery, spent grain is used as cattle feed. Pictured here is brewmaster Paul Gautreau. Alberta may not always get an A-grade when it comes to the environment, but in some areas the province’s enterprises are on the leading edge. In industries from agriculture to forestry to beer, Alberta businesses are taking their own initiative to become closed-loop producers – that ...


    By Himark bioGas Inc

  • Adding Value To On-Farm Digesters

    ANAEROBIC digestion of dairy manure and food processing residuals in Michigan is not a new undertaking. Over the years, 11 farm digesters were constructed in the state, of which four are still operational, reports Michelle Crook of the Michigan Department of Agriculture in a presentation in the spring of 2007. “Three of the operating digesters are for livestock manure and one is for food ...


    By BioCycle Magazine

  • Renewables Make Progress on Many Fronts: Grass Roots Ethanoll from Field Waste

    Progress in community digesters will bring fresh jobs and local control back to farm country - plus offering answers for global warming. FROM THE MIDWEST where native grasses, field waste and wood chips are fueling new biorefineries that are locally-owned to the Northwest where some 50 million gallons of raw manure are producing electricity and dried bedding, community digesters and on-farm ...


    By BioCycle Magazine

  • Farm digester evolution in Vermont

    In the fall of 2012, Brian Jones of Joneslan Farm in Hyde Park, Vermont spread the first load of manure that had gone through the farm’s new anaerobic digester. “It didn’t smell at all,” recalls Jones. “And we’ve been told that the nitrogen in the digested manure is more available to the plants we grow.” When the Joneslan Farm digester went on line in ...


    By BioCycle Magazine

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