animal 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

  • 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

  • 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

  • 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.

  • Cultivation of an Arthrospira platensis with digested piggery wastewater

    An Arthrospira platensis strain ZJWST-S1 was isolated in Jiaxing City, China, which proved able to proliferate quickly in undiluted digested piggery wastewater (DPW), and the protein content in the algal biomass was high. Single factor experiments showed that the strain was able to quickly grow in a Zarrouk medium as the dosage of sodium bicarbonate, nitrate-nitrogen and phosphate-phosphorus ...


    By IWA Publishing

  • 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

  • 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

  • Probiotics: a second mother for young ruminants?

    Lallemand presents new ruminant study at the 5thBeneficial Microbes Conference in Amsterdam Lallemand Animal Nutrition participated in the 5th Beneficial Microbes Conference in Amsterdam, Netherlands, on Oct. 10-12, 2016. This unique event gathers international scientists focusing their research on beneficial microbes supporting the health and well-being of both ...


    By Lallemand Animal Nutrition

  • Understanding the Fat in your Milk Replacer

    Fat digestion in the young calf Commercial milk replacers are often compared and evaluated based on the percentage of protein and fat on the label.  Discussion rarely delves into what makes up the components of fat and its effects on digestion, absorption or growth.  Fats are comprised of short chain, medium chain and long chain fatty acids.  The length of the chain is ...


    By Grober Nutrition USA

  • IAQ Technical Information, References and Resources – 20060808

    AIRBORNE ALLERGENS AFFECT OUR HEALTH! There is NO prejudice for economic or social status! Affected Immuno-Compromised Individuals include: Elderly, Children, Cancer and Transplant Patients. Allergic reactions include hypersensitivity pneumonitis allergic rhinitis, and some types of Asthma. Infectious illnesses, such as influenza, measles and chicken pox are transmitted through the air. Molds ...

  • 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 ...

  • Hog facility Texas, USA

    Type of Wastewater System: Supernate pit flush system Problem: This facility was having problems with manure crusting and floating on the top of the pit. This was making it impossible to flush the solids from the pit to an anaerobic digester. It was also having a tremendous buildup of ammonia gas that was causing irritation to the pigs and the employees. Flies were beginning to ...


    By Roebic Laboratories, Inc.

  • Probiotics: a second mother for young ruminants?

    Lallemand presents new ruminant study at the 5thBeneficial Microbes Conference in Amsterdam Lallemand Animal Nutrition participated in the 5th Beneficial Microbes Conference in Amsterdam, Netherlands, on Oct. 10-12, 2016. This unique event gathers international scientists focusing their research on beneficial microbes supporting the health and well-being of both humans and ...


    By Lallemand Animal Nutrition

  • 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

  • 5 C’s Of Calf Care

    Every producer has individual opportunities and challenges due to their housing environment and management strategy. The key to maximizing growth, health, and long-term profitability is establishing a sound system of care for your pre-ruminant livestock. No matter the system you choose, ensuring these 5 keys to management are acknowledged and defined for you and your team will enhance the ...


    By Grober Nutrition USA

  • 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

  • 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 ...

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