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Direct Contact Membrane Distillation with Crystallization Applied to NaCl Solutions
Gryta, M. Direct Contact Membrane Distillation with Crystallization Applied to NaCl Solutions Chemical papers, Vol.56, No. 1, 2002, 14-19
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n561a14.pdf
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561a14.pdf |
application/pdf |
430.23KB |
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| Author(s) |
Gryta, M.
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| Title |
Direct Contact Membrane Distillation with Crystallization Applied to NaCl Solutions
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| Journal name |
Chemical papers
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| Publication date |
2002
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| Year available |
2002
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| Volume number |
56
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| Issue number |
1
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| ISSN |
0366-6352
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| Start page |
14
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| End page |
19
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2002
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| Language |
english
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| Subject |
290000 Engineering and Technology
291100 Environmental Engineering
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| Abstract/Summary |
Preparationof NaCl supersaturated solutions by direct contact membrane distillation (DCMD)integrated with salt crystallization has been studied. For the purpose of thisstudy a module assembled from macroporous polypropylene capillaries was used.The feed temperature was kept at 353 K or 358 K, and the temperature ofdistillate stream was changed from 293 K to 328 K. Salt crystallization on themembrane surfaces has been observed during the process when the distillate temperaturewas kept below 308 K. As a consequence of that phenomenon an increase ofmembrane wettability and reduction of the distillate flux were observed. Whendistillate temperature was raised to 328 K, salt crystallization on themembrane surfaces was eliminated, and permeate flux was stabilized during theprocess runs. After 138 h of the process operation, the permeate flux decrease ofabout 40 % was observed. Additionally, the DCMD process integrated withcrystallization yielded average NaCl production of 55 kg m−2 d−1.
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