Comparative Study of Direct-Contact and Air-Gap Membrane Distillation Processes

2007 ◽  
Vol 46 (2) ◽  
pp. 584-590 ◽  
Author(s):  
A. M. Alklaibi ◽  
Noam Lior
Keyword(s):  
Comparative Study ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Air Gap ◽  
Air Gap Membrane Distillation

Modeling of Air-Gap Membrane Distillation and Comparative Study with Direct Contact Membrane Distillation

2020 ◽  
Vol 59 (50) ◽  
pp. 21930-21947
Author(s):  
Sadaf Noamani ◽  
Shirin Niroomand ◽  
Masoud Rastgar ◽  
Mehdi Azhdarzadeh ◽  
Mohtada Sadrzadeh
Keyword(s):  
Comparative Study ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Air Gap ◽  
Air Gap Membrane Distillation ◽  
Direct Contact Membrane Distillation

Downstream variations of air-gap membrane distillation and comparative study with direct contact membrane distillation: A modelling approach

Desalination ◽  
2022 ◽  
Vol 526 ◽  
pp. 115539
Author(s):  
Abolfazl Ansari ◽  
Fariba Malekpour Galogahi ◽  
David V. Thiel ◽  
Fernanda Helfer ◽  
Graeme Millar ◽  
...  
Keyword(s):  
Comparative Study ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Air Gap ◽  
Air Gap Membrane Distillation ◽  
Direct Contact Membrane Distillation ◽  
Modelling Approach

scholarly journals A Comparison Study of Brine Desalination using Direct Contact and Air Gap Membrane Distillation

2019 ◽  
Vol 25 (11) ◽  
pp. 47-54
Author(s):  
Ahmed Shamil Khalaf ◽  
Asrar Abdullah Hassan
Keyword(s):  
Flow Rate ◽  
Direct Contact ◽  
Polyvinylidene Fluoride ◽  
Membrane Distillation ◽  
Air Gap ◽  
Feed Flow Rate ◽  
Permeate Flux ◽  
Air Gap Membrane Distillation ◽  
Flat Sheet ◽  
Feed Temperature

Membrane distillation (MD) is a hopeful desalination technique for brine (salty) water. In this research, Direct Contact Membrane Distillation (DCMD) and  Air Gap Membrane Distillation (AGMD) will be used. The sample used is from Shat Al –Arab water (TDS=2430 mg/l). A polyvinylidene fluoride (PVDF) flat sheet membrane was used as a flat sheet form with a plate and frame cell. Several parameters were studied, such as; operation time, feed temperature, permeate temperature, feed flow rate. The results showed that with time, the flux decreases because of the accumulated fouling and scaling on the membrane surface. Feed temperature and feed flow rate had a positive effect on the permeate flux, while permeate temperature had a reverse effect on permeate flux. It is noticeable that the flux in DCMD is greater than AGMD, at the same conditions. The flux in DCMD is 10.95LMH, and that in AGMD is 7.14 LMH.  In AGMD, the air gap layer made a high resistance. Here the temperature transport reduces in the permeate side of AGMD due to the air gap resistance. The heat needed for AGMD is lower than DCMD, this leads to low permeate flux because the temperature difference between the two sides is very small, so the driving force (vapor pressure) is low.                                                                                               

Comparative study of air gap, direct contact and sweeping gas membrane distillation configurations

2016 ◽  
Vol 7 (1) ◽  
pp. 71-86 ◽  
Author(s):  
Nizar Loussif ◽  
Jamel Orfi
Keyword(s):  
Comparative Study ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Air Gap ◽  
Sweeping Gas

Direct contact and air gap membrane distillation: Differences and similarities between lab and pilot scale

Desalination ◽  
2017 ◽  
Vol 422 ◽  
pp. 91-100 ◽  
Author(s):  
L. Eykens ◽  
I. Hitsov ◽  
K. De Sitter ◽  
C. Dotremont ◽  
L. Pinoy ◽  
...  
Keyword(s):  
Direct Contact ◽  
Pilot Scale ◽  
Membrane Distillation ◽  
Air Gap ◽  
Air Gap Membrane Distillation

Comparison of hollow fiber membranes in direct contact and air gap membrane distillation (MD)

2015 ◽  
Vol 57 (22) ◽  
pp. 10012-10019 ◽  
Author(s):  
Hyeongrak Cho ◽  
Yong-Jun Choi ◽  
Sangho Lee ◽  
Jaewuk Koo ◽  
Taemun Huang
Keyword(s):  
Hollow Fiber ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Air Gap ◽  
Hollow Fiber Membranes ◽  
Air Gap Membrane Distillation ◽  
Fiber Membranes

scholarly journals Direct contact ultrasound for fouling control and flux enhancement in air-gap membrane distillation

2020 ◽  
Vol 61 ◽  
pp. 104816 ◽  
Author(s):  
Osamah Naji ◽  
Raed A. Al-juboori ◽  
Les Bowtell ◽  
Alla Alpatova ◽  
Noreddine Ghaffour
Keyword(s):  
Direct Contact ◽  
Membrane Distillation ◽  
Air Gap ◽  
Flux Enhancement ◽  
Fouling Control ◽  
Air Gap Membrane Distillation
Sign in / Sign up

Export Citation Format

Share Document