The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer Oil
In order to reduce pollutant emission from substation fires into the soil environment, developing technology to remove pollutants in soil after substation fires is necessary. Among the soil remediation technologies, thermal desorption has been proven to be an effective soil remediation method. In th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/13/4/515 |
| _version_ | 1797436940459442176 |
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| author | Shixiong Jiang Sunxian Weng |
| author_facet | Shixiong Jiang Sunxian Weng |
| author_sort | Shixiong Jiang |
| collection | DOAJ |
| description | In order to reduce pollutant emission from substation fires into the soil environment, developing technology to remove pollutants in soil after substation fires is necessary. Among the soil remediation technologies, thermal desorption has been proven to be an effective soil remediation method. In this paper, the effects of thermal desorption temperature and atmosphere on the releasing characteristics of pollutants in the soil polluted by waste oil in the accident oil pool in the substation were examined. The results showed that when the thermal desorption temperature was 500 °C, a large number of macromolecular organics decompose from the solid phase and change into long-chain alkanes and macromolecular acids under pure N<sub>2</sub> atmosphere. When the thermal desorption temperature was higher than 500 °C the pollutants in the soil were further decomposed into small molecular organics. In addition, the organics were transformed to CO<sub>2</sub>, SO<sub>2</sub>, NO<sub>x</sub>, and CO under 20% O<sub>2</sub>/N<sub>2</sub> atmosphere when the temperature was above 500 °C. |
| first_indexed | 2024-03-09T11:10:47Z |
| format | Article |
| id | doaj.art-2cdda239345f45849d2413620fa32479 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T11:10:47Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-2cdda239345f45849d2413620fa324792023-12-01T00:45:55ZengMDPI AGAtmosphere2073-44332022-03-0113451510.3390/atmos13040515The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer OilShixiong Jiang0Sunxian Weng1State Grid Fujian Electric Power Co., Ltd., Fuzhou 350003, ChinaState Grid Fujian Electric Power Co., Ltd., Fuzhou 350003, ChinaIn order to reduce pollutant emission from substation fires into the soil environment, developing technology to remove pollutants in soil after substation fires is necessary. Among the soil remediation technologies, thermal desorption has been proven to be an effective soil remediation method. In this paper, the effects of thermal desorption temperature and atmosphere on the releasing characteristics of pollutants in the soil polluted by waste oil in the accident oil pool in the substation were examined. The results showed that when the thermal desorption temperature was 500 °C, a large number of macromolecular organics decompose from the solid phase and change into long-chain alkanes and macromolecular acids under pure N<sub>2</sub> atmosphere. When the thermal desorption temperature was higher than 500 °C the pollutants in the soil were further decomposed into small molecular organics. In addition, the organics were transformed to CO<sub>2</sub>, SO<sub>2</sub>, NO<sub>x</sub>, and CO under 20% O<sub>2</sub>/N<sub>2</sub> atmosphere when the temperature was above 500 °C.https://www.mdpi.com/2073-4433/13/4/515substation fire in electrical equipmenttransformer oilcontaminated soilthermal desorptionpollutants emission |
| spellingShingle | Shixiong Jiang Sunxian Weng The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer Oil Atmosphere substation fire in electrical equipment transformer oil contaminated soil thermal desorption pollutants emission |
| title | The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer Oil |
| title_full | The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer Oil |
| title_fullStr | The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer Oil |
| title_full_unstemmed | The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer Oil |
| title_short | The Emission Characteristics of Pollutants from Thermal Desorption of Soil Contaminated by Transformer Oil |
| title_sort | emission characteristics of pollutants from thermal desorption of soil contaminated by transformer oil |
| topic | substation fire in electrical equipment transformer oil contaminated soil thermal desorption pollutants emission |
| url | https://www.mdpi.com/2073-4433/13/4/515 |
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