Optimization of flat sheet hydrophobic membranes synthesis via supercritical CO2 induced phase inversion for direct contact membrane distillation by using response surface methodology (RSM)

2015 ◽  
Vol 103 ◽  
pp. 105-114 ◽  
Author(s):  
Ali Zaherzadeh ◽  
Javad Karimi-Sabet ◽  
Seyed Mohammad Ali Mousavian ◽  
Sohrabali Ghorbanian
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Supercritical Co2 ◽  
Direct Contact ◽  
Phase Inversion ◽  
Membrane Distillation ◽  
Direct Contact Membrane Distillation ◽  
Flat Sheet ◽  
Hydrophobic Membranes

scholarly journals Direct Contact Membrane Distillation for Desalination Brine Solution

2018 ◽  
Vol 24 (11) ◽  
pp. 18
Author(s):  
Asrar Abdullah Hassan ◽  
Ahmed Khalid Mohammed Reda
Keyword(s):  
Direct Contact ◽  
High Salinity ◽  
Membrane Distillation ◽  
Feed Concentration ◽  
Modus Operandi ◽  
Brine Solution ◽  
Direct Contact Membrane Distillation ◽  
Flat Sheet ◽  
Plate Cell ◽  
Feed Temperature

Desalination is a process where fresh water produces from high salinity solutions, many ways used for this purpose and one of the most important processes is membrane distillation (MD). Direct contact membrane distillation (DCMD) can be considered as the most prominent type from MD types according to ease of design and modus operandi. This work studies the efficiency of using DCMD operation for desalination brine with different concentration (1.75, 3.5, 5 wt. % NaCl). Frame and plate cell was used with flat sheet PTFE hydrophobic type membrane. The study proves that MD is an effective process for desalination brines with feed temperature less than 60˚C especially for feed with low TDS. 37˚C, 47˚C, and 57˚C was feed temperature and 17, 22, 27˚C as permeate temperatures used in study, temperature in both sides of membrane are recorded and TDS for permeate collected to assure that there is no penetration of brine to permeate side, the results took every 30 min for time experiment of 180 min. From results, the flux increases with increasing feed temperature and flow rate, and decreasing with increasing feed concentration, experiment time, and permeate temperature.     

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