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Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite
Bentonite-based adsorbents for the removal of hydrogen sulfide (H(2)S) were prepared by a wet-mixing method using carbide slag as the active component. The effects of carbide slag content, calcination temperature, calcination time, and reaction temperature on the H(2)S adsorption capacity were inves...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10334473/ https://www.ncbi.nlm.nih.gov/pubmed/37441034 http://dx.doi.org/10.1039/d3ra03392a |
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author | Jiang, Qi Jiang, Ming Han, Tianci He, Yongmei Li, Tianguo Zhang, Jilai Su, Youbo Wu, Yonglin Dian, Bo Zong, Yonglan |
author_facet | Jiang, Qi Jiang, Ming Han, Tianci He, Yongmei Li, Tianguo Zhang, Jilai Su, Youbo Wu, Yonglin Dian, Bo Zong, Yonglan |
author_sort | Jiang, Qi |
collection | PubMed |
description | Bentonite-based adsorbents for the removal of hydrogen sulfide (H(2)S) were prepared by a wet-mixing method using carbide slag as the active component. The effects of carbide slag content, calcination temperature, calcination time, and reaction temperature on the H(2)S adsorption capacity were investigated. The results showed that compared with the blank bentonite adsorbent, the carbide slag-modified bentonite-based adsorbent enhanced the chemisorption of H(2)S. The adsorption capacity of the carbide slag modified bentonite adsorbent (2.50 mg g(−1)) was more than 40 times higher than that of the blank bentonite-based adsorbent (0.06 mg g(−1)) under optimal conditions. The optimal conditions for H(2)S removal were 3 : 5 ratio of carbide slag-to-bentonite, calcination temperature of 450 °C for 2 h, and reaction temperature of 95 °C. H(2)S was mainly removed in the mesopores and macropores of the adsorbent and was finally transformed to CaS and sulfate on the adsorbent surface. The adsorption process of H(2)S followed the Freundlich adsorption isotherm equation and Bangham adsorption kinetic model. |
format | Online Article Text |
id | pubmed-10334473 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-103344732023-07-12 Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite Jiang, Qi Jiang, Ming Han, Tianci He, Yongmei Li, Tianguo Zhang, Jilai Su, Youbo Wu, Yonglin Dian, Bo Zong, Yonglan RSC Adv Chemistry Bentonite-based adsorbents for the removal of hydrogen sulfide (H(2)S) were prepared by a wet-mixing method using carbide slag as the active component. The effects of carbide slag content, calcination temperature, calcination time, and reaction temperature on the H(2)S adsorption capacity were investigated. The results showed that compared with the blank bentonite adsorbent, the carbide slag-modified bentonite-based adsorbent enhanced the chemisorption of H(2)S. The adsorption capacity of the carbide slag modified bentonite adsorbent (2.50 mg g(−1)) was more than 40 times higher than that of the blank bentonite-based adsorbent (0.06 mg g(−1)) under optimal conditions. The optimal conditions for H(2)S removal were 3 : 5 ratio of carbide slag-to-bentonite, calcination temperature of 450 °C for 2 h, and reaction temperature of 95 °C. H(2)S was mainly removed in the mesopores and macropores of the adsorbent and was finally transformed to CaS and sulfate on the adsorbent surface. The adsorption process of H(2)S followed the Freundlich adsorption isotherm equation and Bangham adsorption kinetic model. The Royal Society of Chemistry 2023-07-11 /pmc/articles/PMC10334473/ /pubmed/37441034 http://dx.doi.org/10.1039/d3ra03392a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Jiang, Qi Jiang, Ming Han, Tianci He, Yongmei Li, Tianguo Zhang, Jilai Su, Youbo Wu, Yonglin Dian, Bo Zong, Yonglan Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite |
title | Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite |
title_full | Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite |
title_fullStr | Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite |
title_full_unstemmed | Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite |
title_short | Removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite |
title_sort | removal of hydrogen sulfide in the gas phase by carbide slag modified bentonite |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10334473/ https://www.ncbi.nlm.nih.gov/pubmed/37441034 http://dx.doi.org/10.1039/d3ra03392a |
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