Solar vacuum membrane distillation for seawater desalination

2013 ◽  
Author(s):  
S. Gabsi ◽  
A. Chehbouni
Keyword(s):  
Membrane Distillation ◽  
Seawater Desalination ◽  
Vacuum Membrane Distillation

Simulation of an autonomous solar vacuum membrane distillation for seawater desalination

2013 ◽  
Vol 52 (7-9) ◽  
pp. 1725-1734 ◽  
Author(s):  
Nader Frikha ◽  
Radhouane Matlaya ◽  
Béchir Chaouachi ◽  
Slimane Gabsi
Keyword(s):  
Membrane Distillation ◽  
Seawater Desalination ◽  
Vacuum Membrane Distillation

Vacuum membrane distillation for seawater desalination: could it compete with reverse osmosis?

2003 ◽  
Vol 3 (5-6) ◽  
pp. 57-66 ◽  
Author(s):  
D. Wirth ◽  
C. Cabassud
Keyword(s):  
Energy Consumption ◽  
Reverse Osmosis ◽  
Membrane Distillation ◽  
Hollow Fibre ◽  
Permeate Flux ◽  
Seawater Desalination ◽  
Industrial Plants ◽  
Low Energy Consumption ◽  
In Series ◽  
Vacuum Membrane Distillation

This work addresses the potentialities of vacuum membrane distillation (VMD) using hollow fibre membranes for seawater desalination. Experiments were carried out with a synthetic salty water containing a concentration of NaCl from 0 up to 300 g/L. A Microza (Pall) hollow fibre module was used. Experimental results show that, for this module, concentration polarisation and heat transfer limitations are not significant and do not modify the permeate flux. This is a great advantage over reverse osmosis (RO). Energy consumption was then studied using computations based on modelling. Two different industrial plants were considered: the first one consisted of hollow fibre modules arranged in series and operated in a single-pass. The second one was designed for a discontinuous operation using a circulation loop. Computations clearly show the interest (low energy consumption) of VMD for seawater desalination in comparison with RO.

scholarly journals Seawater desalination with solar-energy-integrated vacuum membrane distillation system

2016 ◽  
Vol 7 (1) ◽  
pp. 16-24 ◽  
Author(s):  
Fang Wang ◽  
Shixuan Wang ◽  
Jin Li ◽  
Dongsheng Xia ◽  
Jianshe Liu
Keyword(s):  
Solar Energy ◽  
Fresh Water ◽  
Hollow Fiber Membrane ◽  
Retention Rate ◽  
Membrane Distillation ◽  
Membrane Module ◽  
Natural Seawater ◽  
Water Tank ◽  
Seawater Desalination ◽  
Vacuum Membrane Distillation

This study designed and tested a novel type of solar-energy-integrated vacuum membrane distillation (VMD) system for seawater desalination under actual environmental conditions in Wuhan, China. The system consists of eight parts: a seawater tank, solar collector, solar cooker, inclined VMD evaporator, circulating water vacuum pump, heat exchanger, fresh water tank, and brine tank. Natural seawater was used as feed and a hydrophobic hollow-fiber membrane module was used to improve seawater desalination. The experiment was conducted during a typical summer day. Results showed that when the highest ambient temperature was 33 °C, the maximum value of the average solar intensity was 1,080 W/m2. The system was able to generate 36 kg (per m2 membrane module) distilled fresh water during 1 day (7:00 am until 6:00 pm), the retention rate was between 99.67 and 99.987%, and electrical conductivity was between 0.00276 and 0.0673 mS/cm. The average salt rejection was over 90%. The proposed VMD system shows favorable potential application in desalination of brackish waters or high-salt wastewater treatment, as well.

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