Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5
Separation mechanisms for the three model divalent cations with very similar atomic weights (Cu, 63.5Da; Co, 58.9Da and Ni, 58.7Da) by two nanofiltration (NF) membranes (Nitto Denko ESNA and GE Osmonics DK) were studied in a cross flow module from pHs3 to 5. The results show that the rejection order...
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
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2023
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| Truy cập trực tuyến: | https://scholar.dlu.edu.vn/handle/123456789/3029 https://www.sciencedirect.com/science/article/pii/S0011916413003767 |
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oai:scholar.dlu.edu.vn:123456789-30292023-09-28T06:43:42Z Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5 Nguyen Cong Nguyen Chen, Shiao-Shing Hsu, Hung-Te Li, Chi-Wang Nanofiltration; Divalent cation; Enthalpy of hydration; Pore radius; Concentration polarization Separation mechanisms for the three model divalent cations with very similar atomic weights (Cu, 63.5Da; Co, 58.9Da and Ni, 58.7Da) by two nanofiltration (NF) membranes (Nitto Denko ESNA and GE Osmonics DK) were studied in a cross flow module from pHs3 to 5. The results show that the rejection order for the two selected membranes was Ni2+>Cu2+>Co2+ from the conducted experiments, and the removal efficiency was increased as pH was decreased for all three metals. It was found that enthalpy of hydration and concentration polarization exerted the controlling effect on the membrane selective transport rather than atomic weight, Stokes radius and hydrated radius. Besides, the counterion of sulfate enhanced the removal efficiencies, but an increase of sulfate more than 0.01M reduced the removal efficiencies. Moreover, the removal efficiency of DK membrane was better than that of the ESNA membrane due to the positive charge of DK membrane at low pH. 2023-09-28T06:43:39Z 2023-09-28T06:43:39Z 2013-11-01 Journal article Bài báo đăng trên tạp chí thuộc ISI, bao gồm book chapter 0011-9164 https://scholar.dlu.edu.vn/handle/123456789/3029 10.1016/j.desal.2013.08.011 https://www.sciencedirect.com/science/article/pii/S0011916413003767 en |
| institution |
Thư viện Trường Đại học Đà Lạt |
| collection |
Thư viện số |
| language |
English |
| topic |
Nanofiltration; Divalent cation; Enthalpy of hydration; Pore radius; Concentration polarization |
| spellingShingle |
Nanofiltration; Divalent cation; Enthalpy of hydration; Pore radius; Concentration polarization Nguyen Cong Nguyen Chen, Shiao-Shing Hsu, Hung-Te Li, Chi-Wang Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5 |
| description |
Separation mechanisms for the three model divalent cations with very similar atomic weights (Cu, 63.5Da; Co, 58.9Da and Ni, 58.7Da) by two nanofiltration (NF) membranes (Nitto Denko ESNA and GE Osmonics DK) were studied in a cross flow module from pHs3 to 5. The results show that the rejection order for the two selected membranes was Ni2+>Cu2+>Co2+ from the conducted experiments, and the removal efficiency was increased as pH was decreased for all three metals. It was found that enthalpy of hydration and concentration polarization exerted the controlling effect on the membrane selective transport rather than atomic weight, Stokes radius and hydrated radius. Besides, the counterion of sulfate enhanced the removal efficiencies, but an increase of sulfate more than 0.01M reduced the removal efficiencies. Moreover, the removal efficiency of DK membrane was better than that of the ESNA membrane due to the positive charge of DK membrane at low pH. |
| format |
Journal article |
| author |
Nguyen Cong Nguyen Chen, Shiao-Shing Hsu, Hung-Te Li, Chi-Wang |
| author_facet |
Nguyen Cong Nguyen Chen, Shiao-Shing Hsu, Hung-Te Li, Chi-Wang |
| author_sort |
Nguyen Cong Nguyen |
| title |
Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5 |
| title_short |
Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5 |
| title_full |
Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5 |
| title_fullStr |
Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5 |
| title_full_unstemmed |
Separation of three divalent cations (Cu2+, Co2+ and Ni2+) by NF membranes from pHs3 to 5 |
| title_sort |
separation of three divalent cations (cu2+, co2+ and ni2+) by nf membranes from phs3 to 5 |
| publishDate |
2023 |
| url |
https://scholar.dlu.edu.vn/handle/123456789/3029 https://www.sciencedirect.com/science/article/pii/S0011916413003767 |
| _version_ |
1778792482223423488 |