In this study, a facile fabrication of enhanced direct contact membrane distillation membrane via immobilization of the hydrophilic graphene oxide (GO) on the permeate side (GOIM-P) of a commercial polypropylene supported polytetrafluoroethylene (PTFE) membrane is presented. The permeate side hydrophilicity of the membrane was modified by immobilizing the GO to facilitate fast condensation and withdrawal of the permeate water vapors. The water vapor flux was found to be as high as 64.5 kg/m2.h at 80°C, which is 15% higher than the unmodified membrane at a feed salt concentration of 10000 ppm. The mass transfer coefficient was observed 6.2 E-07 kg/m2.s.Pa at 60oC and 200 mL/min flow rate in the GOIM-P.

Graphene oxide immobilization on the permeate side of the PTFE membrane to enhance flux in membrane distillation

2019 Spring National Meeting

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