Preliminary studies of water treatment using forward osmosis
Preliminary studies of water treatment using forward osmosis
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DOI：
10.1080/19443994.2012.714926
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发表时间：
2013-01
影响因子：
1.1
通讯作者：
Yijun Xie;Rui Ma;Shengji Xia
中科院分区：
文献类型：
--
作者：
Yijun Xie;Rui Ma;Shengji Xia
Abstract Forward osmosis (FO) is an emerging water treatment technology with potential applications in desalination and wastewater reclamation. The FO uses a concentrated draw solution to generate high osmotic pressure, which pulls water across a semipermeable membrane from the feed solution. In this study, we have investigated the effect of draw solution on FO water flux. The 0.1 M NaCl draw solution provides 2 L/m2h water permeation flux, while the 3 M NaCl draw solution provides 10 L/m2h water permeation flux as a result of the greater osmotic driving force across the membrane. About 150% increase in transmembrane water flux was observed with an increase in temperature from 11 to 36°C. The reverse draw solute permeation to feed solution was also explored. The NaCl presents the highest reverse solute movement compared with MgSO4 and CaCl2. In addition, the rejection of quinine surrogated as micropollutans and humic acid by FO process was satisfactory in terms of the removal efficiency by FO membrane.
