Effects of microbial agents on NH3 emission during pig manure composting

Chinese Journal of Applied Ecology

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Effects of microbial agents on NH₃ emission during pig manure composting

WANG Weiping¹,WANG Kaiying²,XUE Zhiyong¹,ZHU Fengxiang¹

¹Institute of Environment Resources and Soil Fertilizer,Zhejiang Agricultural Academy of Sciences,Hangzhou 310021,China;²Institute of Agricultural BioEnvironment Engineering,Zhejiang University,Hangzhou 310029，China

Received:2004-05-02 Revised:2004-11-17 Online:2005-04-18

Abstract

Abstract: This paper studied the effects of different mixed microbial agents on the NH₃ emission during pig manure-sawdust (9∶1,fresh w/w) composting. The results showed that the NH₃ emission was mainly occurred at the high temperature (>50 ℃) period during the early 15 days of composting. The addition of 3‰ mixed microbial agents 1,2 and 3 had a definite inhibitory effect on the NH₃ emission,and the effect of 5‰ mixed microbial agent 1 was significant (P＜0.05).

Key words: Heavy metals, Combined pollution, Quadratic regression revolution design, Combined effects

WANG Weiping¹,WANG Kaiying²,XUE Zhiyong¹,ZHU Fengxiang¹. Effects of microbial agents on NH₃ emission during pig manure composting[J]. Chinese Journal of Applied Ecology.

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Effects of microbial agents on NH₃ emission during pig manure composting

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