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Effects of Electrolyte pH on the Electro-Osmotic Characteristics in Anthracite
[Image: see text] Accelerating the drainage of water in coal reservoirs can significantly improve the extraction efficiency of coalbed methane (CBM). The movement of water with different pH values in anthracite was tested and analyzed. The results showed that the electro-osmotic flow velocity increa...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7676344/ https://www.ncbi.nlm.nih.gov/pubmed/33225156 http://dx.doi.org/10.1021/acsomega.0c04013 |
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author | Zhang, Liankun Kang, Tianhe Kang, Jianting Zhang, Xiaoyu Zhang, Runxu Kang, Guanxian |
author_facet | Zhang, Liankun Kang, Tianhe Kang, Jianting Zhang, Xiaoyu Zhang, Runxu Kang, Guanxian |
author_sort | Zhang, Liankun |
collection | PubMed |
description | [Image: see text] Accelerating the drainage of water in coal reservoirs can significantly improve the extraction efficiency of coalbed methane (CBM). The movement of water with different pH values in anthracite was tested and analyzed. The results showed that the electro-osmotic flow velocity increased first and then slightly decreased with the increase of time up to 120 h. The electro-osmotic flow was markedly strengthened under a strong acid (pH 2) or strong alkaline (pH 13) environment, and the direction of electro-osmosis was reversed at a pH of 3–4. The changes in zeta potential, surface groups, and minerals in anthracite were tested to analyze the mechanism of electro-osmotic characteristics. The results obtained from this work will provide a basis for the process of drainage and depressurization during the CBM extraction. |
format | Online Article Text |
id | pubmed-7676344 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-76763442020-11-20 Effects of Electrolyte pH on the Electro-Osmotic Characteristics in Anthracite Zhang, Liankun Kang, Tianhe Kang, Jianting Zhang, Xiaoyu Zhang, Runxu Kang, Guanxian ACS Omega [Image: see text] Accelerating the drainage of water in coal reservoirs can significantly improve the extraction efficiency of coalbed methane (CBM). The movement of water with different pH values in anthracite was tested and analyzed. The results showed that the electro-osmotic flow velocity increased first and then slightly decreased with the increase of time up to 120 h. The electro-osmotic flow was markedly strengthened under a strong acid (pH 2) or strong alkaline (pH 13) environment, and the direction of electro-osmosis was reversed at a pH of 3–4. The changes in zeta potential, surface groups, and minerals in anthracite were tested to analyze the mechanism of electro-osmotic characteristics. The results obtained from this work will provide a basis for the process of drainage and depressurization during the CBM extraction. American Chemical Society 2020-11-02 /pmc/articles/PMC7676344/ /pubmed/33225156 http://dx.doi.org/10.1021/acsomega.0c04013 Text en © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Zhang, Liankun Kang, Tianhe Kang, Jianting Zhang, Xiaoyu Zhang, Runxu Kang, Guanxian Effects of Electrolyte pH on the Electro-Osmotic Characteristics in Anthracite |
title | Effects of Electrolyte pH on the Electro-Osmotic Characteristics
in Anthracite |
title_full | Effects of Electrolyte pH on the Electro-Osmotic Characteristics
in Anthracite |
title_fullStr | Effects of Electrolyte pH on the Electro-Osmotic Characteristics
in Anthracite |
title_full_unstemmed | Effects of Electrolyte pH on the Electro-Osmotic Characteristics
in Anthracite |
title_short | Effects of Electrolyte pH on the Electro-Osmotic Characteristics
in Anthracite |
title_sort | effects of electrolyte ph on the electro-osmotic characteristics
in anthracite |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7676344/ https://www.ncbi.nlm.nih.gov/pubmed/33225156 http://dx.doi.org/10.1021/acsomega.0c04013 |
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