TY - JFULL AU - Yatnanta Padma Devia and Tsuyoshi Imai and Takaya Higuchi and Ariyo Kanno and Koichi Yamamoto and Masahiko Sekine PY - 2015/7/ TI - Effect of Operating Conditions on Forward Osmosis for Nutrient Rejection Using Magnesium Chloride as a Draw Solution T2 - International Journal of Environmental and Ecological Engineering SP - 690 EP - 696 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10001541 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 102, 2015 N2 - Advanced treatments such as forward osmosis (FO) can be used to separate or reject nutrients from secondary treated effluents. Forward osmosis uses the chemical potential across the membrane, which is the osmotic pressure gradient, to induce water to flow through the membrane from a feed solution (FS) into a draw solution (DS). The performance of FO is affected by the membrane characteristics, composition of the FS and DS, and operating conditions. The aim of this study was to investigate the optimum velocity and temperature for nutrient rejection and water flux performance in FO treatments. MgCl2 was used as the DS in the FO process. The results showed that higher cross flow velocities yielded higher water fluxes. High rejection of nutrients was achieved by using a moderate cross flow velocity at 0.25 m/s. Nutrient rejection was insensitive to temperature variation, whereas water flux was significantly impacted by it. A temperature of 25°C was found to be good for nutrient rejection. ER -