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A novel multi-stage direct contact membrane distillation module: Design, experimental and theoretical approaches

Title
A novel multi-stage direct contact membrane distillation module: Design, experimental and theoretical approaches
Author
김우승
Keywords
Multi-stage DCMD; Module design; Desalination; Composite membrane; Experiment; Modeling; SPACER-FILLED CHANNELS; DESALINATION PROCESS; SEAWATER DESALINATION; FLUX ENHANCEMENT; HOLLOW-FIBER; THERMAL EFFICIENCY; COMPOSITE MEMBRANE; WATER RECOVERY; MASS-TRANSFER; HEAT
Issue Date
2016-12
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
WATER RESEARCH, v. 107, Page. 47-56
Abstract
An economic desalination system with a small scale and footprint for remote areas, which have a limited and inadequate water supply, insufficient water treatment and low infrastructure, is strongly demanded in the desalination markets. Here, a direct contact membrane distillation (DCMD) process has the simplest configuration and potentially the highest permeate flux among all of the possible MD processes. This process can also be easily instituted in a multi-stage manner for enhanced compactness, productivity, versatility and cost-effectiveness. In this study, an innovative, multi-stage, DCMD module under countercurrent-flow configuration is first designed and then investigate both theoretically and experimentally to identify its feasibility and operability for desalination application. Model predictions and measured data for mean permeate flux are compared and shown to be in good agreement. The effect of the number of module stages on the mean permeate flux, performance ratio and daily water production of the MDCMD system has been theoretically identified at inlet feed and permeate flow rates of 1.5 l/min and inlet feed and permeate temperatures of 70 degrees C and 25 degrees C, respectively. The daily water production of a three-stage DCMD module with a membrane area of 0.01 m(2) at each stage is found to be 21.5 kg. (C) 2016 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0043135416308120http://repository.hanyang.ac.kr/handle/20.500.11754/71365
ISSN
0043-1354
DOI
10.1016/j.watres.2016.10.059
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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