https://scholars.lib.ntu.edu.tw/handle/123456789/625317
標題: | Improving the performance of salinity gradient power generation by a negative pressure difference | 作者: | Chen Y.-T Tsou T.-Y JYH-PING HSU |
關鍵字: | Ion concentration polarization; Negative pressure difference; Salinity gradient power; Surface charge density | 公開日期: | 2022 | 卷: | 134 | 來源出版物: | Journal of the Taiwan Institute of Chemical Engineers | 摘要: | : Although salinity gradient power is a promising renemable energy source, its performance is limited by ion concentration polarization. We show that this problem can be alliviated effectively by applying a pressure gradient, the direction of which is opposite to the concentration gradient. The mechanisms involved are discussed in detail. Background: Ion concentration polarization (ICP) can lower appreciably the effective concentration gradient across a nanopore, thereby reducing significantly the power generated in salinity gradient power harvesting. Methods: Attempting to alleviate ICP, we propose applying a negative pressure difference across the nanopore. Significant findings: Due to the enhancement in nanopore selectivity, the power generated can be improved appreciably. For example, at a surface charge density of −60 mC/m2, the maximum power can be raised up to ca. 167% when a pressure difference of −6 bar is applied. We show, for the first time, that applying a negative pressure difference is indeed effective. © 2022 Taiwan Institute of Chemical Engineers |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130886859&doi=10.1016%2fj.jtice.2022.104351&partnerID=40&md5=c3d87da0e7d7af2ad6a73b528e84eac6 https://scholars.lib.ntu.edu.tw/handle/123456789/625317 |
ISSN: | 18761070 | DOI: | 10.1016/j.jtice.2022.104351 | SDG/關鍵字: | Energy harvesting; Ions; Polarization; Surface charge; B-y Ions; Concentration- gradients; Energy source; Ion concentration polarizations; Negative pressure difference; Performance; Power- generations; Salinity gradient power; Surface charge densities; Nanopores |
顯示於: | 化學工程學系 |
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