Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses
The low gas permeability of coal formations with limited coal pores and fractures leads to difficulty in coalbed methane exploration. High-voltage electrical pulse has a potential application in enhanced coalbed methane recovery. In this study, we discuss the microscopic characteristics of anthracit...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2018-02-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617416686977 |
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| _version_ | 1841564140319014912 |
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| author | Chuan-jie Zhu Ximiao Lu Bai-quan Lin Fa-zhi Yan Chang Guo Yi-du Hong Xiang-liang Zhang |
| author_facet | Chuan-jie Zhu Ximiao Lu Bai-quan Lin Fa-zhi Yan Chang Guo Yi-du Hong Xiang-liang Zhang |
| author_sort | Chuan-jie Zhu |
| collection | DOAJ |
| description | The low gas permeability of coal formations with limited coal pores and fractures leads to difficulty in coalbed methane exploration. High-voltage electrical pulse has a potential application in enhanced coalbed methane recovery. In this study, we discuss the microscopic characteristics of anthracite coals treated by high-voltage electrical pulse. We find that C, O, and other coal elements constituting oxygenic groups, which mainly account for gas adsorption, decreased slightly after high-voltage electrical pulse treatment, indicating that elemental variation may have little influence on gas adsorption. The scanning electron microscopy and low-pressure nitrogen gas adsorption (LP-N 2 GA) results show that the cumulative micropore volumes of high-voltage electrical pulse-treated coals were much larger than those of original coals. The mercury intrusion porosimetry results show that the cumulative macropore volumes, which act as gas migration channels in coal increased. Additionally, high-voltage electrical pulse-treated coals were found to have smaller entrapment areas, indicating that gas migration was enhanced. |
| format | Article |
| id | doaj-art-f05551150a7a4af9a425ce247e5f7804 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2018-02-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-f05551150a7a4af9a425ce247e5f78042025-01-02T23:11:15ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382018-02-013610.1177/0263617416686977Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulsesChuan-jie ZhuXimiao LuBai-quan LinFa-zhi YanChang GuoYi-du HongXiang-liang ZhangThe low gas permeability of coal formations with limited coal pores and fractures leads to difficulty in coalbed methane exploration. High-voltage electrical pulse has a potential application in enhanced coalbed methane recovery. In this study, we discuss the microscopic characteristics of anthracite coals treated by high-voltage electrical pulse. We find that C, O, and other coal elements constituting oxygenic groups, which mainly account for gas adsorption, decreased slightly after high-voltage electrical pulse treatment, indicating that elemental variation may have little influence on gas adsorption. The scanning electron microscopy and low-pressure nitrogen gas adsorption (LP-N 2 GA) results show that the cumulative micropore volumes of high-voltage electrical pulse-treated coals were much larger than those of original coals. The mercury intrusion porosimetry results show that the cumulative macropore volumes, which act as gas migration channels in coal increased. Additionally, high-voltage electrical pulse-treated coals were found to have smaller entrapment areas, indicating that gas migration was enhanced.https://doi.org/10.1177/0263617416686977 |
| spellingShingle | Chuan-jie Zhu Ximiao Lu Bai-quan Lin Fa-zhi Yan Chang Guo Yi-du Hong Xiang-liang Zhang Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses Adsorption Science & Technology |
| title | Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses |
| title_full | Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses |
| title_fullStr | Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses |
| title_full_unstemmed | Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses |
| title_short | Experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high-voltage electrical pulses |
| title_sort | experimental study on the microscopic characteristics affecting methane adsorption on anthracite coal treated with high voltage electrical pulses |
| url | https://doi.org/10.1177/0263617416686977 |
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