Mixing ratios in biosolids composting

Article Abstract:

The results from a windrow composting project in Texas reveal that the finished biosolids composts have exceptional quality, as prescribed by state and federal requirements for Class A material, with only one product failing to reach the standards for Class A material. A greenhouse growth test ranked the biosolids composts significantly higher than commercial potting soils. All composts are high in primary, secondary and micronutrients. They produce acceptable germination, indicating adequate compost maturity.

Analysis, Waste products, Organic fertilizers, Waste products as fertilizer

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Computation of C/N ratios for various organic fractions

Article Abstract:

The methods used to determine organic carbon/inorganic nitrogen (C/N) ratios for Municipal Solid Waste (MSW) is reviewed and the C/N ratios for MSW are assessed. It was postulated that computed C/N ratio for the organic fraction of MSW should be based on the biodegradable organic carbon and the total percentage of nitrogen since the production of methane and carbon dioxide is based on the biodegradable organic carbon.

Management, Industrial wastes

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Ohio State University

Article Abstract:

Ohio State University researchers have been making significant advances in composting and compost utilization programs. An analysis of gas, water output and dry weight losses during composting of organic refuse supports a study design for an efficient system with minimal energy requirements for operation. Other research studies focus on alternative uses of organic wastes in industrial systems.

The Ohio State University

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