Hydrophobically modified silica blend PVDF nanocomposite membranes for seawater desalination via direct contact membrane distillation

2019 ◽  
Vol 148 ◽  
pp. 20-29 ◽  
Author(s):  
Rajesha Kumar ◽  
Mansour Ahmed ◽  
Garudachari Bhadrachari ◽  
Abbas Al-Mesri ◽  
Jibu P. Thomas
Keyword(s):  
Direct Contact ◽  
Membrane Distillation ◽  
Seawater Desalination ◽  
Nanocomposite Membranes ◽  
Modified Silica ◽  
Hydrophobically Modified ◽  
Direct Contact Membrane Distillation

scholarly journals Seawater Desalination Based on a Bubbling and Vacuum-Enhanced Direct Contact Membrane Distillation

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Guangfu Cao ◽  
Qingfen Ma ◽  
Jingru Li ◽  
Shenghui Wang ◽  
Chengpeng Wang ◽  
...  
Keyword(s):  
Production Rate ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Published Data ◽  
Water Production ◽  
Permeate Flux ◽  
Seawater Desalination ◽  
Noncondensable Gas ◽  
Direct Contact Membrane Distillation ◽  
Water Production Rate

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.

Green silica-based ceramic hollow fiber membrane for seawater desalination via direct contact membrane distillation

2018 ◽  
Vol 205 ◽  
pp. 22-31 ◽  
Author(s):  
Siti Khadijah Hubadillah ◽  
Mohd Hafiz Dzarfan Othman ◽  
Takeshi Matsuura ◽  
Mukhlis A. Rahman ◽  
Juhana Jaafar ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Direct Contact ◽  
Hollow Fiber Membrane ◽  
Membrane Distillation ◽  
Seawater Desalination ◽  
Fiber Membrane ◽  
Direct Contact Membrane Distillation

Fouling study on vacuum-enhanced direct contact membrane distillation for seawater desalination

2015 ◽  
Vol 57 (22) ◽  
pp. 10042-10051 ◽  
Author(s):  
Gayathri Naidu ◽  
Sanghyun Jeong ◽  
Saravanamuthu Vigneswaran ◽  
Eun-Kyung Jang ◽  
Yong-Jun Choi ◽  
...  
Keyword(s):  
Direct Contact ◽  
Membrane Distillation ◽  
Seawater Desalination ◽  
Direct Contact Membrane Distillation
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