TY - JOUR
T1 - Predicting the effect of membrane spacers on mass transfer
AU - Shrivastava, Abhishek
AU - Kumar, Satish
AU - Cussler, E. L.
PY - 2008/10/15
Y1 - 2008/10/15
N2 - Like many separation processes, ultrafiltration and reverse osmosis are often compromised by concentration polarization. Such polarization can be mitigated by static mixers and other flow barriers placed as spacers next to the membrane surface. These spacers can be shaped like ladders, herringbones, and helices. The effect of these spacers can be successfully predicted without adjustable parameters from extensions of the Lévêque equation. The predictions are in agreement with results of computational fluid mechanics and with electrochemical experiments. They supply a tool for optimizing spacer design.
AB - Like many separation processes, ultrafiltration and reverse osmosis are often compromised by concentration polarization. Such polarization can be mitigated by static mixers and other flow barriers placed as spacers next to the membrane surface. These spacers can be shaped like ladders, herringbones, and helices. The effect of these spacers can be successfully predicted without adjustable parameters from extensions of the Lévêque equation. The predictions are in agreement with results of computational fluid mechanics and with electrochemical experiments. They supply a tool for optimizing spacer design.
KW - Concentration polarization
KW - Reverse osmosis
KW - Spacers
KW - Ultrafiltration
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U2 - 10.1016/j.memsci.2008.05.060
DO - 10.1016/j.memsci.2008.05.060
M3 - Article
AN - SCOPUS:54049143227
VL - 323
SP - 247
EP - 256
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
IS - 2
ER -