Dual-Mode Sorption of Inorganic Acids in Polybenzimidazole (PBI) Membrane |
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| Authors: | Morteza Sadeghi Homayoon Moadel Somaieh Khatti Behnam Ghalei |
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| Affiliation: | 1. Department of Chemical Engineering , Isfahan University of Technology , Isfahan, Iran;2. Department of Chemical Engineering, Faculty of Engineering , Tarbiat Modares University , Tehran, Iran |
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| Abstract: | The sorption behaviors of sulfuric, perchloric, and phosphoric acids in polybenzimidazole membranes have been investigated. The results of sorption isotherms are consistent with the general form of a dual-mode sorption isotherm. The dual-mode sorption parameters were found using a least-squares program by fitting experimental data to a dual-mode equation. Results indicate a correlation between permeant properties like acidity, size, and the affinity constant in Langmuir-mode sorption species. Moreover, the results show that the size of the permeants has the dominant effect on Henry's constant. The obtained results for   | |
| Keywords: | dual-mode sorption glassy polymer Langmuir-mode sorption polybenzimidazole sorption |
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