Arsenic Removal from Aqueous Solutions by Forward Osmosis
Arsenic Removal from Aqueous Solutions by Forward Osmosis
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DOI：
10.1252/jcej.19we207
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发表时间：
2020-03
影响因子：
0.8
通讯作者：
Minh Tuan Pham;S. Nishihama;K. Yoshizuka
中科院分区：
文献类型：
--
作者：
Minh Tuan Pham;S. Nishihama;K. Yoshizuka
正向渗透（FO）去除水中砷（As）的潜在应用需要对As的去除性能有更好的了解。本研究考察了进料液中As浓度、pH、出水液中盐浓度、膜表面取向对As去除率的影响。结果表明，溶液的pH值对砷的去除率有重要影响。提取液中的盐浓度显著影响通过膜的水通量。相对于表面取向的浓度极化是影响砷保留的关键因素；活性层朝向进料液（AL-FS）的膜比活性层朝向进料液（AL-DS）的膜更有效。
The potential applications of forward osmosis (FO) for arsenic (As) removal from water requires an improved understanding of As rejection performance. This study investigated the effects of As concentration and pH in the feed solution, the salt concentration in the draw solution, and surface orientation of a FO membrane on As rejection. The results showed that the pH of the solution played an important role in As rejection. Salt concentration in the draw solution significantly influenced the water flux through the membrane. The concentration polarization with respect to surface orientation was a key factor for As retention; FO operation using the membrane with the active layer oriented toward the feed solution (AL-FS) was more effective than using the membrane with the active layer oriented toward the draw solution (AL-DS).