TY - JOUR
T1 - Selective hydrophilization of the permeate surface to enhance flux in membrane distillation
AU - Ragunath, Smruti
AU - Roy, Sagar
AU - Mitra, Somenath
N1 - Funding Information:
This work was supported by a grant from New Jersey Water Resource Research Institute (NJWRRI) and National Science Foundation – United States (NSF).
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - This paper reports the development of novel hydrophilized membrane for water desalination using direct contact membrane distillation (DCMD). The permeate side of a porous polytetrafluoroethylene (PTFE) membrane on polypropylene (PP) support was hydrophilized by chemical treatment with oxidizing agents to enhance the rapid condensation and removal of permeated vapors. Depending upon the process conditions, permeate flux was as high as 61 L/m2 h, and as much 73% higher than an unmodified membrane. 58% increase in overall mass transfer coefficient was also observed with the hydrophilized membrane. In short, hydrophilization of membrane surface showed enhanced flux at lower temperature, making this a more energy efficient process.
AB - This paper reports the development of novel hydrophilized membrane for water desalination using direct contact membrane distillation (DCMD). The permeate side of a porous polytetrafluoroethylene (PTFE) membrane on polypropylene (PP) support was hydrophilized by chemical treatment with oxidizing agents to enhance the rapid condensation and removal of permeated vapors. Depending upon the process conditions, permeate flux was as high as 61 L/m2 h, and as much 73% higher than an unmodified membrane. 58% increase in overall mass transfer coefficient was also observed with the hydrophilized membrane. In short, hydrophilization of membrane surface showed enhanced flux at lower temperature, making this a more energy efficient process.
KW - Desalination
KW - Direct contact membrane distillation
KW - Mass transfer coefficient
KW - Surface hydrophilization
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U2 - 10.1016/j.seppur.2016.07.001
DO - 10.1016/j.seppur.2016.07.001
M3 - Article
AN - SCOPUS:84978240474
SN - 1383-5866
VL - 170
SP - 427
EP - 433
JO - Gas Separation and Purification
JF - Gas Separation and Purification
ER -