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Finite Ion Size Effects on Electrolyte Transport in Nanofiltration Membranes
Автор | Рыжков, Илья Игоревич | |
Автор | Минаков, Андрей Викторович | |
Дата внесения | 2018-02-07T07:28:33Z | |
Дата, когда ресурс стал доступен | 2018-02-07T07:28:33Z | |
Дата публикации | 2017-04 | |
Библиографическое описание | Рыжков, Илья Игоревич. Finite Ion Size Effects on Electrolyte Transport in Nanofiltration Membranes [Текст] / Илья Игоревич Рыжков, Андрей Викторович Минаков // Journal of Siberian Federal University - Mathematics and Physics. — 2017. — Т. 10 (№ 2). — С. 186-198 | |
ISSN | 19971397 | |
URI (для ссылок/цитирований) | http://elib.sfu-kras.ru/bitstream/2311/31572/1/ryzhkov.pdf | |
URI (для ссылок/цитирований) | https://elib.sfu-kras.ru/handle/2311/69802 | |
Аннотация | The pressure–driven electrolyte transport through nanofiltration membrane pores with specified wall po- tential is investigated theoretically. The finite ion size effect is taken into account by introducing an additional term to electrochemical potential. The two–dimensional Navier–Stokes, Poisson, and modified Nernst–Planck equations are solved numerically in a high aspect ratio nanopore connecting two reservoirs with a larger diameter. The calculations are performed for potassium chloride aqueous solution. In the case of point–like ions, the non–physical rise of counter–ion concentration is observed near the pore wall at large applied voltages. When finite ion size is taken in account, the concentration of counter–ions decreases significantly and saturates to the maximum value. It leads to lower osmotic pressure jump and larger magnitude of potential in the pore. The stronger co–ion depletion observed for finite size ions results in the increase of salt rejection, membrane potential, and required pressure drop. | |
Тема | conductive membranes | |
Тема | electrolyte transport | |
Тема | nanofiltration | |
Тема | modified Nernst–Planck equation | |
Тема | finite ion size | |
Тема | numerical modelling | |
Название | Finite Ion Size Effects on Electrolyte Transport in Nanofiltration Membranes | |
Тип | Journal Article | |
Тип | Journal Article Postprint | |
Страницы | 186-198 | |
ГРНТИ | 29.17.29 | |
Дата обновления | 2018-02-07T07:28:33Z | |
DOI | 10.17516/1997-1397-2017-10-2-186-198 | |
Институт | Институт космических и информационных технологий | |
Подразделение | Кафедра прикладной математики и компьютерной безопасности | |
Журнал | Journal of Siberian Federal University - Mathematics and Physics | |
Квартиль журнала в Scopus | Q4 |