Modeling of hollow fiber membrane module-performance in direct contact membrane distillation

Mahdi Mohammadi-Ghaleni, Siamak Nejati

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We constructed a three-dimensional model to study the effect of operating conditions, and physical and geometrical parameters in a hollow fiber membrane module under Direct Contact Membrane Distillation (DCMD) operation. The normalized permeate flux was calculated for different module arrangements, various hollow fiber physical properties (e.g. length and thickness), and operating conditions. The results indicated that the permeate flux decreases when we increase the fiber length, thickness, and tortuosity. In contrast, increasing the feed velocity and temperature, and the porosity of fibers result in increased permeate flux. We found that the normalized permeate flux significantly drops once the interspacing parameter of fibers-the ratio of external radius of fibers to the center-to-center distance between neighboring fibers-approached 0.47. The temperature difference across the membrane decreases with reducing the membrane thickness; however, the effective driving force, pressure gradient over the membrane thickness, for water transport through the membrane increases.

Original languageEnglish (US)
Title of host publicationSeparations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
PublisherAIChE
Number of pages1
ISBN (Electronic)9781510834477
StatePublished - 2016
EventSeparations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting - San Francisco, United States
Duration: Nov 13 2016Nov 18 2016

Publication series

NameSeparations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting

Other

OtherSeparations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
CountryUnited States
CitySan Francisco
Period11/13/1611/18/16

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Energy(all)
  • Engineering(all)

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  • Cite this

    Mohammadi-Ghaleni, M., & Nejati, S. (2016). Modeling of hollow fiber membrane module-performance in direct contact membrane distillation. In Separations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting (Separations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting). AIChE.