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2008•Journal of Minxi Vocational and Technical CollegeRequires access

Effect of initial C/N ratios on pig manure compost maturity

Luo Quan-da

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Abstract

A compost experiment using swine manure and rice bran was conducted to study the initial C/N ratio on maturity of composting.The results showed that the compost at initial C/N ratio of 28 had higher GI,T-value and lower NH4+-N/NO3——N ratio than that of initial C/N ratio of 18,35,40.For lack of available nitrogen or available carbon in the compost at low C/N ratio or at high C/N ratio might contribute to restrain microorganism growth and metabolism.The optimum initial C/N ratio for pig manure composting was 28.

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What this paper is about

A compost experiment using swine manure and rice bran was conducted to study the initial C/N ratio on maturity of composting.The results showed that the compost at initial C/N ratio of 28 had higher GI,T-value and lower NH4+-N/NO3——N ratio than that of initial C/N ratio of 18,35,40.For lack of available nitrogen or available carbon in the compost at low C/N ratio or at high C/N ratio might contribute to restrain microorganism growth and metabolism.The optimum initial C/N ratio for pig manure composting was 28.

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Available abstract

A compost experiment using swine manure and rice bran was conducted to study the initial C/N ratio on maturity of composting.The results showed that the compost at initial C/N ratio of 28 had higher GI,T-value and lower NH4+-N/NO3——N ratio than that of initial C/N ratio of 18,35,40.For lack of available nitrogen or available carbon in the compost at low C/N ratio or at high C/N ratio might contribute to restrain microorganism growth and metabolism.The optimum initial C/N ratio for pig manure composting was 28.

Key concepts: Compost, Manure, Animal science, Bran, Nitrogen, Chemistry, Maturity (psychological), Carbon-to-nitrogen ratio

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