Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation
A Bubbling and Vacuum-enhanced direct contact membrane distillation (BVDCMD) is proposed to improve the water production rate of the direct contact membrane distillation (DCMD-)based seawater desalination process. Its heat and mass transfer mechanism are theoretically analyzed, and a CFD model is es...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/3587057 |
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| author | Guangfu Cao Qingfen Ma Jingru Li Shenghui Wang Chengpeng Wang Hui Lu Yun Zheng |
| author_facet | Guangfu Cao Qingfen Ma Jingru Li Shenghui Wang Chengpeng Wang Hui Lu Yun Zheng |
| author_sort | Guangfu Cao |
| collection | DOAJ |
| description | A Bubbling and Vacuum-enhanced direct contact membrane distillation (BVDCMD) is proposed to improve the water production rate of the direct contact membrane distillation (DCMD-)based seawater desalination process. Its heat and mass transfer mechanism are theoretically analyzed, and a CFD model is established, which is verified by the published data. Four types of the noncondensable gas, “O2,” “air,” “N2,” and “H2,” are adopted as the bubbling gas, and their process enhancements under different pressure of permeate side, temperature, and NaCl concentration of feed side and flow velocities are investigated. The results show that the permeate flux increased remarkably with the decrease in the viscosity of the bubbling gas, and hence, “H2” is the best option for the bubbling gas, with the permeate flux being enhanced by 144.11% and the effective heat consumption being increased by 20.81% on average. The effective water production rate of BVDCMD is predicted to be 42.38% more than that of DCMD, proving its feasibility in the seawater desalination. |
| format | Article |
| id | doaj-art-e69e447a6b3a4c29be4c16b12b42c114 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-e69e447a6b3a4c29be4c16b12b42c1142025-02-03T07:24:22ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782021-01-01202110.1155/2021/35870573587057Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane DistillationGuangfu Cao0Qingfen Ma1Jingru Li2Shenghui Wang3Chengpeng Wang4Hui Lu5Yun Zheng6College of Mechanical and Electrical Engineering, Hainan University, Haikou, Hainan 570228, ChinaCollege of Mechanical and Electrical Engineering, Hainan University, Haikou, Hainan 570228, ChinaCollege of Mechanical and Electrical Engineering, Hainan University, Haikou, Hainan 570228, ChinaCollege of Mechanical and Electrical Engineering, Hainan University, Haikou, Hainan 570228, ChinaThe Institute of Seawater Desalination & Multipurpose Utilization, MNR, No. 55, Hanghai Road, Nankai District, Tianjin 300192, ChinaInstitute of Environment and Plant Protection, Chinese Academy of Tropical Agriculture Sciences, Haikou, Hainan 571101, ChinaCollege of Mechanical and Electrical Engineering, Hainan University, Haikou, Hainan 570228, ChinaA Bubbling and Vacuum-enhanced direct contact membrane distillation (BVDCMD) is proposed to improve the water production rate of the direct contact membrane distillation (DCMD-)based seawater desalination process. Its heat and mass transfer mechanism are theoretically analyzed, and a CFD model is established, which is verified by the published data. Four types of the noncondensable gas, “O2,” “air,” “N2,” and “H2,” are adopted as the bubbling gas, and their process enhancements under different pressure of permeate side, temperature, and NaCl concentration of feed side and flow velocities are investigated. The results show that the permeate flux increased remarkably with the decrease in the viscosity of the bubbling gas, and hence, “H2” is the best option for the bubbling gas, with the permeate flux being enhanced by 144.11% and the effective heat consumption being increased by 20.81% on average. The effective water production rate of BVDCMD is predicted to be 42.38% more than that of DCMD, proving its feasibility in the seawater desalination.http://dx.doi.org/10.1155/2021/3587057 |
| spellingShingle | Guangfu Cao Qingfen Ma Jingru Li Shenghui Wang Chengpeng Wang Hui Lu Yun Zheng Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation International Journal of Chemical Engineering |
| title | Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation |
| title_full | Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation |
| title_fullStr | Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation |
| title_full_unstemmed | Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation |
| title_short | Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation |
| title_sort | seawater desalination based on a bubbling and vacuum enhanced direct contact membrane distillation |
| url | http://dx.doi.org/10.1155/2021/3587057 |
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