https://scholars.lib.ntu.edu.tw/handle/123456789/641935
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Zheng, Ding Cheng | en_US |
dc.contributor.author | Tsou, Tsung Yen | en_US |
dc.contributor.author | JYH-PING HSU | en_US |
dc.contributor.author | HSIU-YU YU | en_US |
dc.date.accessioned | 2024-04-17T02:51:37Z | - |
dc.date.available | 2024-04-17T02:51:37Z | - |
dc.date.issued | 2024-07-01 | - |
dc.identifier.issn | 00119164 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/641935 | - |
dc.description.abstract | The electrokinetic energy conversion (EKEC) and desalination performance of a cation-selective funnel-shaped nanopore are investigated theoretically through a continuum description. The effects of pore geometry, characterized by a symmetric factor between the conical and the cylindrical regions, are considered along with pressure and temperature gradients. A desalination index is proposed to evaluate the performance of desalination, examining the trade-off between the ion rejection rate and the volumetric flow rate. It is found that applying a positive (or negative) ∆T relative to ∆P lowers (or raises) the rejection rate, as influenced by the ion selectivity. In addition, the rejection rate at a positive pressure difference (∆P>0; flow coming from tip to base) is slightly larger than that at ∆P<0 because the former has a stronger inlet electric field. Based on the desalination index, a positive ∆T manifests a better desalination performance than a negative ∆T, in contrast to the EKEC case, which displays better energy efficiency under a negative ∆T than under a positive ∆T. The smaller diffusivity of Na+ compared with K+ makes the power density and efficiency of NaCl better than those of KCl. Meanwhile, the more significant thermal diffusion for NaCl impacts its rejection rate more appreciably. | en_US |
dc.relation.ispartof | Desalination | en_US |
dc.subject | Desalination | Electrokinetic energy conversion | Funnel-shaped nanopore | Pressure gradient | Thermal gradient | en_US |
dc.title | Electrokinetic energy conversion and desalination of an asymmetric nanopore with applied temperature gradients | en_US |
dc.type | journal article | en_US |
dc.identifier.doi | 10.1016/j.desal.2024.117518 | - |
dc.identifier.scopus | 2-s2.0-85188955913 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85188955913 | - |
dc.relation.journalvolume | 580 | en_US |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0002-4162-1394 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
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