manure digestion Articles
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Prokaryote community dynamics in anaerobic co-digestion of swine manure, rice straw and industrial clay residuals
The aim of this study was to analyze the effect of the addition of rice straw and clay residuals on the prokaryote methane-producing community structure in a semi-continuously stirred tank reactor fed with swine manure. Molecular techniques, including terminal restriction fragment length polymorphism and a comparative nucleotide sequence analyses of the prokaryotic 16S rRNA genes, were ...
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Evaluation of Phosphorus source coefficients as predictors of runoff Phosphorus concentrations
Received for publication December 27, 2007. Many states have adopted a P site index (PSI) as a risk assessment tool to determine when P-based nutrient management is required for a given agricultural field. Some PSIs use a weighting factor, the phosphorus source coefficient (PSC), to account for differences in P solubility between organic P sources. Information relating to appropriate values of ...
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From animal manure to artificial fertilizer and clean water - Case Study
Nijhuis Industries uses GENIAAL to convert raw manure or digestate into biobased phosphate, nitrogen and potassium fertilizer and clean water. GENIAAL is based on the production of valuable biobased fertilizers from raw manure and digestate and will therefore make an important contribution to solving the manure and phosphate surplus in the Netherlands as a cost-effective, innovative and ...
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Removal and recovery of ammonia from chicken manure
The feasibility of the conversion of organic nitrogen available in raw chicken manure (CM) into ammonia via hydrolysis and the removal of ammonia from anaerobically digested manure were evaluated in this study. Firstly, the hydrolysis experiments were performed and the effects of temperature, total solids (TS) content and retention time were investigated. The results showed that 90% of the ...
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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 ...
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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 ...
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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 ...
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Animal waste categorisation
Animal by-products (ABPs) are divided into 3 categories, based on the risks they pose. Category 1 ABPs – are classed as high risk. Carcasses and body parts from zoo and circus animals or pets Animals used in experiments International catering waste Animals that are contaminated due to illegal treatments Wild animals suspected of being infected with a disease that humans or ...
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Improvement of efficiency production of the daily feeding of straw and pig manure more than 15%
Farm Renewables - Broadley Energy Broadley Energy, owned by Farm Renewables, installed a BioBANG to recirculate digestate to reduce the viscosity and generate more ...
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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
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Enhancing Dairy Farm Efficiency with Manure Separators
Dairy farming is not only a crucial part of our food industry but also a significant contributor to agriculture's environmental challenges. Managing dairy waste, especially manure, is a pressing issue that has wide-reaching implications for both the farming community and the environment. In this blog post, we will delve into the importance of manure management in dairy farms and explore the ...
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Why Invest in A Manure Separator On Your Farms?
Manure separation is a process that involves dividing raw livestock manure into its solid and liquid components. This separation is typically achieved through mechanical means, such as using specialized equipment like screw press manure separators or sloped screen separators. The process is essential in modern agricultural practices as it allows farmers to manage manure more effectively, extract ...
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Chicago Council lists three-decade changes in greenhouse gases and average temperature
In 2011, we wrote a column, “Global warming is happening: How should farmers respond?” (http://agpolicy.org/weekcol/549.html). In that column we began by saying, “There was a time when one could legitimately argue that there was a lack of scientific agreement over the issue of the role of humans in global warming and even whether we were in a cooling or warming period. It is ...
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