Sweeping gas membrane distillation: Numerical simulation of mass and heat transfer in a hollow fiber membrane module

Vasiliki Karanikola, Andrea F. Corral, Hua Jiang, Avelino E Saez, Wendell P Ela, Robert G Arnold

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A hollow fiber MD module was tested at various air and brine flow rates and temperatures. A model based on heat and mass transport was developed to predict permeate production rates. The dependence of permeate production rate on brine temperature, air flow rate and brine flow rate was successfully simulated. Numerical simulations support the selection of membrane characteristics and air and brine flow conditions for optimal performance in water desalination. Condensation was predicted to occur on the air side of the membrane due to saturation of the sweeping gas and is accounted for in the model. In the absence of condensation, temperature profiles in the module could not be predicted correctly. The ratio of length to diameter of the membrane module is of particular significance as it dictates the permeation rate for a specific pore size membrane. Small pores require higher aspect ratios than large pores to obtain the same permeate production rate. The membrane module used in this study has an effective pore size of 0.1. μm, which renders membrane transport the dominant source of mass transfer resistance to through-pore water vapor transport. A module with a larger pore size and appropriate aspect ratio should produce permeate at a significantly higher rate.

Original languageEnglish (US)
Pages (from-to)15-24
Number of pages10
JournalJournal of Membrane Science
Volume483
DOIs
StatePublished - Jun 1 2015

Fingerprint

Distillation
distillation
mass transfer
hollow
Mass transfer
Hot Temperature
modules
Gases
heat transfer
Heat transfer
membranes
Membranes
porosity
fibers
Fibers
Computer simulation
air flow
Air
gases
Pore size

Keywords

  • Desalination
  • Heat and mass transfer
  • Hollow fiber membrane
  • Modeling
  • Sweeping gas membrane distillation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Science(all)
  • Biochemistry
  • Filtration and Separation

Cite this

Sweeping gas membrane distillation : Numerical simulation of mass and heat transfer in a hollow fiber membrane module. / Karanikola, Vasiliki; Corral, Andrea F.; Jiang, Hua; Saez, Avelino E; Ela, Wendell P; Arnold, Robert G.

In: Journal of Membrane Science, Vol. 483, 01.06.2015, p. 15-24.

Research output: Contribution to journalArticle

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