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TORREFACTION - THE NEW METHOD FOR DECONTAMINATION OF POULTRY LITTER (AS BIOFUELS OR FERTILIZING)
Abstract
The Russian poultry farms produce 10 million tons of litter and litter mass annually. These wastes are not disposed of properly, which leads to significant economic and environmental damage. Dry poultry waste can be used as a valuable fertilizer for seedbed preparation and spring fertilizing of winter crops. One of the major limitations for the direct application of organic waste in the soil is the presence of conditionally pathogenic and pathogenic microorganisms, preserving viability and virulence for a long time. Disposal of all kinds of poultry litter involves its recycling into organic fertilizer under the following conditions: the full and guaranteed decontamination of litter, preservation of the maximum amount of organic substance minimization of energy and time spent on decontamination of litter, These conditions are satisfied in the case of treatment of the original poultry litter by the low-temperature pyrolysis (torrefaction). The low-temperature pyrolysis (torrefaction) of pelleted litter mass at 250 пїЅC and treatment time of 60 min. allows for complete decontamination of this type of waste. Reducing the pyrolysis temperature to 155 пїЅC even when the treatment time was 60 min. did not fully decontaminate the litter mass. There was also a series of experiments on the use of pelleted litter mass subjected to low-temperature pyrolysis for 1 hour at 250 пїЅC as a fertilizer or biofuels.
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References10
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