Effects of rice hull bio-char supplementation on the odor strength in the pig manure composting facilities

Deug-Woo Han; Dong-Hyun Lee; Changhan Kim; Dongjo Yu; Dae Kwon Park; Si Young Seo; Saem-Ee Woo; Yu Na Jang; Okhwa Hwang; Min Woong Jung

doi:10.11109/JAES.2021.23.2.062

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2021 Vol.23, Issue 2 Preview Page Next Page

Research article

Effects of rice hull bio-char supplementation on the odor strength in the pig manure composting facilities 왕겨탄화물 투입이 양돈농가 퇴비사 냄새강도에 미치는 영향

31 August 2021. pp. 62-66

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Abstract

In this study, odor mitigating effect of rice hull bio-char was evaluated using pig manure compost as a source of odor. Two odor strength indicators, complex odor and odor activity value were analysed in pig manure composting facilities at two time points, before and after rice hull bio-char (5% v/v) supplementation. When mitigating effects were evaluated, it was found that odor strength indicators, both complex odor and odor activity value (OAV) were decreased by 50% at least, within 2~3 weeks after treatment in all tested composting facilities. The mechanism of odor mitigation is still unclear, but, based on published articles, it can be assumed that carbonic adsorption and activation of microbial metabolism are the major contributors for the effect. Recent investigation on the hypothetic mechanism called Direct Interspecies Electron Transfer (DIET) suggest a weak electric conductivity on carbonic molecules might play a key role for the microbial activation.

Keywords

Pig

Odor

Rice hull bio-char

VFA

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Information

Publisher :The Korean Society of Animal Environmental Science & Technology
Publisher(Ko) :(사)한국축산환경학회
Journal Title :Journal of Animal Environmental Science
Journal Title(Ko) :축산시설환경학회지
Volume : 23
No :2
Pages :62-66
Received Date : 2021-06-07
Revised Date : 2021-07-16
Accepted Date : 2021-07-18
DOI :https://doi.org/10.11109/JAES.2021.23.2.062

Journal of Animal Environmental ScienceISSN:1226-0274(Print)(사)한국축산환경학회

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