agriculture digester Articles

  • Introduction of composted digestates in agriculture

    Municipal organic waste is increasingly recycled by aerobic composting or anaerobic digestion procedures. In 1997, 230 000 Mg organic waste were composted and used for agriculture in the region of Cologne, which is an increase by 70% compared to 1994 (Anonymous, 1999). Therefore, the effects of compost on the soil and the plants require studies on:- its nutrient contents to contribute to the ...


    By ORBIT e.V.

  • 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

  • Farm digester progress in Pennsylvania

    The Commonwealth of Pennsylvania is home to about 7,000 dairy farms with an average herd size of less than 100 cows. While nutrient and odor management are of great importance to these farms, their overall economic viability appears to be the primary factor driving installation of anaerobic digesters over the past few years. “Pennsylvania has 30 dairy digesters and about 5 swine digesters ...


    By BioCycle Magazine

  • 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

  • Optimization of the thermophilic anaerobic co-digestion of pig manure, agriculture waste and inorganic additive through specific methanogenic activity

    The anaerobic co-digestion of three wastes (manure, rice straw and clay residue, an inorganic additive) at different concentration levels and their interactive effects on methanogenic activity were investigated in this work at thermophilic conditions in order to enhance hydrolytic activity and methane production. A central composite design and the response surface methodology were applied for ...


    By IWA Publishing

  • Recovery of ammonium from digestate as fertilizer

    Ammonia inhibition can be a major problem during anaerobic digestion of manure and municipal and industrial sludges. Anaerobic digestion is sensitive to higher NH3-N concentrations, which are inhibiting and at certain levels even toxic for methanogen bacteria. The Nijhuis Ammonium Recovery (AECO-NAR) system can solve this problem and removes ammonium from digestate or other substrate for ...


    By IWA Publishing

  • 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

  • BioKW (A) Agricultural Plant - Case Study

    Digester: 2 x 1.380 m³/h, 2 x 500 kWel; 1 x 1.000 kWth Manure, fruit- and vegetable waste, energy crops, fat sludge, slaughter house waste, food leftovers Scope of delivery: permission planning, detailed planing, tendering, project awarding, project management supervision, mixing technology, gas handling equipment, instrumentation Start-up: ...

  • The CAMBI process and agriculture, a sustainable solution?

    Abstract Both public acceptance and interest from farmers for spreading biosolids from waste water treatment plants (wwpt) on arable land, are dependent on some fundamental criteria. These criteria are, however, quite straightforward. The biosolids should be safe, easy to handle, a well documented source of plant nutrition, without disagreeable odours and easily available. A big part of the ...


    By Cambi Group AS

  • Pfiel (A) Agricultural Plant - Case Study

    Digester: 2 x 2.000 m³ pig manure, energy crops 2 x 500 kWel scope of delivery: permit application, detailed design, tendering, project awarding, project management supervision, agitator equipment, un-pressurized gas holder, tent-roof gas holder, gas handling equipment, instrumentation Start-up: ...

  • Jezera (SLO) Agricultural Plant - Case Study

    Digester: 3.250 m³ pig manure, energy crops 1.000 kWel scope of delivery:  detailed design, agitators, input technology,  gas handling equipment, instrumentation, plant start-up Start-up: ...

  • Digested Dairy Manure To High-End Potting Soil

    Robert Joblin and Ted Sniegocki of Cenergy USA based in Little Rock, Arkansas, are not horticulturalists or agronomists. But they are anaerobic digester developers and when falling rates for renewable energy and the loss of the federal Investment Tax Credit grant hit at the same time, the financial models they had been using “fell down.” The need for additional revenue streams for AD ...


    By BioCycle Magazine

  • Livorno Ferraris (ITA) Agricultural Plant - Case Study

    Digester: 2 x 3.250 m³ pig manure, energy crops 2 x 999 kWel scope of delivery:  detailed design, agitators, gas handling equipment, instrumentation, control, plant start-up Start-up: ...

  • Development of Waste Sawdust as a plant protection material for horticulture and agriculture

    Untitled Document Lignin is one of the major wastes of modern society, in the form of wood waste such as sawdust. In nature, lignin is ...

  • Guangdong Academy of Agricultural Sciences (GDAAS) - Case Study

    There are 13 research institutes under the GDAAS, including specific foods and crops and fertilizer research. The main mission of the institution is to carry out non-profit research around agricultural science and techniques.  As one of the most important agricultural crops institutions, the Crops Research Institute has been focusing on the development of new varieties of crops, cultivation ...

  • Distribution of chromium, cadmium, nickel and lead in agricultural soils collected from Kazanli-Mersin, Turkey

    This study reports total levels of chromium, cadmium, nickel and lead in the agricultural land adjacent a factory producing chromate compounds in Kazanli-Mersin. Surface soil samples were collected from fields around the factory as well as from fields farther away to measure contamination due to aerial transportation and deposition of dust produced in the industrial process. Heavy metals in soil ...


    By Inderscience Publishers

  • Optimum organic loading rate for semi-continuous operation of an anaerobic process for biogas production from Jatropha curcas seed cake

    This paper reports on biogas production by anaerobic digestion of Jatropha curcas seed cake in semi continuous flow at 30°C, focusing on increasing the organic loading rate (OLR) of seed cake by investigating levels of 1.25, 1.67, 2.5, 3.33 and 5 kg Chemical Oxygen Demand (COD)/m³ day. Reactors were fed at flow rates of 125, 167, 250, 333 and 500 ml/day, yielding Hydraulic Retention Times (HRTs) ...


    By Inderscience Publishers

  • Manure drying tunnel doing a good job - Case Study

    Generating power from renewable energies is becoming increasingly important in Germany as well as on the international level. Thus, it is not surprising that the number of biogas plants is steadily increasing as are wind power plants and solar plants. On the agricultural sector, biogas plants are an additional source of income on many farms besides crop production and livestock husbandry. When ...


    By Big Dutchman

  • 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

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