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| Accounting Method and Source Analysis of Greenhouse Gas Emission from Electrolytic Manganese Production Enterprises |
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Received:August 10, 2022
Revised:August 15, 2022
Accepted:August 30, 2022
Published Online:November 14, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.12.002 |
| KeyWord:electrolytic manganese；carbon emission；accounting method；production process；source analysis |
| Author | Institution |
| WANG-Wen |
中国环境科学研究院 |
| SHI Fei-fei |
中国环境科学研究院 |
| DAN Zhi-gang |
中国环境科学研究院 |
| YAO Yang |
中国环境科学研究院 |
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| Abstract: |
| Electrolytic manganese production is one of the important sources of greenhouse gas emissions in China""s industrial enterprises. The lack of systematic and standardized accounting methods restricts the research, judgment and understanding of greenhouse gas emissions of electrolytic manganese production enterprises by the state and industry. The accounting boundary, emission source and calculation method of greenhouse gas emission of electrolytic manganese production enterprises were put forward to form a complete accounting method according to the production characteristics. Source analysis shows that the case enterprise produces 1 t electrolytic manganese product will emit 5.36 t CO2, and carbonate decomposition and power consumption in the ore are the main emission sources, accounting for 22% and 74% respectively; liquid making and electrolysis are the main production processes, making up 30% and 67% respectively. Reducing the power consumption in electrolytic process and improving grade of manganese carbonate ore are optimization paths for the industry to reduce greenhouse gas emissions. This study can provide a meaningful reference for electrolytic manganese industry to carry out greenhouse gas emission accounting and emission reduction research. |
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