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| Effect of Fe2O3 on the emission of sulfur-containing odor during chicken manure composting |
| Received:July 31, 2021 |
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| KeyWord:composting;chicken manure;Fe2O3;sulfur-containing odor;maturity |
| Author Name | Affiliation | E-mail | | CHEN Wenxu | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China | | | LI Guoxue | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China | | | MA Ruonan | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China | | | LIU Yan | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China | | | YUAN Jing | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China | jingyuan@cau.edu.cn |
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| Abstract: |
| In this study, the effect of Fe2O3 as an additive on the maturity and emissions of sulfur-containing odor during chicken manure and cornstalk composting was investigated. The composting experiment was carried out using a 60 L closed reactor. The research results showed that the two treatments, which lasted more than 10 days during the 35-day composting process, maintained a high temperature of ≥ 50℃, meeting the sanitation requirements specified in the Chinese national standard, and all germination indexes(GI)exceeded 70%, reaching complete maturity. These results showed that the addition of Fe2O3 had no negative effect on the temperature and maturity of the final compost. The addition of Fe2O3 effectively reduced the cumulative emissions of hydrogen sulfide(H2S), dimethyl disulfide(Me2SS), and methyl sulfide(Me2S)by 38.81%, 73.59%, and 42.59%, respectively. In addition, the Fe2O3 additive decreased the total sulfur loss by 63.17%. In general, Fe2O3 as an additive can significantly reduce the emission of sulfur-containing odor and increase the sulfur content in the final composite. |
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