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Journal of Biological Sciences
  Year: 2015 | Volume: 15 | Issue: 1 | Page No.: 40-44
DOI: 10.3923/jbs.2015.40.44
Precise Optimization of Poultry Manure Composting Using an Experimental Small-Scale Apparatus
Yusuke Kajiya, Yasuyuki Ishii, Kiichi Fukuyama and Sachiko Idota

Abstract:
Ordinary stacked composting from bovine and poultry manures requires large amounts of materials and it is difficult to conduct uniform and repeated processing. While precise optimization using bovine manure and an experimental small-scale apparatus (Kaguyahime) has already been accomplished, poultry manure has readily decomposable components compared to bovine manure. The objective of this study was to determine the precise optimization of poultry manure composting using the same small-scale apparatus, filled with 7 kg of manure that was dried under sunlight and different amounts of sawdust as subsidiary material. In the preliminary experiment, the maximum temperature for the first 7 days of composting reached over 60°C when the moisture content of the mixture decreased below 65%, while the manure-to-sawdust ratio negligibly affected the temperature increase. Under the preliminary conditions, the maximum temperature of poultry manure mixed with sawdust was over 70°C within 2 days after composting and the thermophile phase above 60 and 55°C continued for an additional 27 and 18 h, respectively. The pH and electrical conductivity of poultry manure composted for 32 days remained at 9.1 and 6.6 mS cm‾1, respectively, which indicates the manure is safe for land application.
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How to cite this article:

Yusuke Kajiya, Yasuyuki Ishii, Kiichi Fukuyama and Sachiko Idota, 2015. Precise Optimization of Poultry Manure Composting Using an Experimental Small-Scale Apparatus. Journal of Biological Sciences, 15: 40-44.

DOI: 10.3923/jbs.2015.40.44

URL: https://scialert.net/abstract/?doi=jbs.2015.40.44

 
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