Transport phenomena and fouling in vacuum enhanced direct contact membrane distillation: Experimental and modelling

Gayathri Naidu, Wang Geun Shim, Sanghyun Jeong, Youngkwon Choi, NorEddine Ghaffour, Saravanamuthu Vigneswaran

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40 Scopus citations

Abstract

The application of vacuum to direct contact membrane distillation (vacuum enhanced direct contact membrane distillation, V-DCMD) removed condensable gasses and reduced partial pressure in the membrane pores, achieving 37.6% higher flux than DCMD at the same feed temperature. Transfer mechanism and temperature distribution profile in V-DCMD were studied. The empirical flux decline (EFD) model represented fouling profiles of V-DCMD. In a continuous V-DCMD operation with moderate temperature (55 degrees C) and permeate pressure (300 mbar) for treating wastewater ROC, a flux of 16.0 +/- 0.3 L/m(2) h and high quality distillate were achieved with water flushing, showing the suitability of V-DCMD for ROC treatment. (C) 2016 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)285-295
Number of pages11
JournalSeparation and Purification Technology
Volume172
DOIs
StatePublished - Aug 27 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This study was funded by the Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE) (Sustainable process for treatment of WWROC to achieve near zero liquid discharge 4.1.12.11/12).

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