Abstract
In this study, the low energy membrane concentration process of PVC latex particles was investigated by means of forward osmosis process.
The detailed investigation revealed that concentration behavior of latex particles strongly depended on the flow condition of latex and the shear stress on the membrane. Moreover, the effects of FO membrane species and membrane orientation facing the latex solution on concentration behavior of latex particles were examined. In addition, the concentration behavior of a surfactant（SDS）aqueous solution was compared with the PVC latex solution. The concentration polarization of SDS into a support layer of the FO membrane played an important role for concentration of latex particles. This work showed high concentration of more than 65 wt％ of latex particles while maintaining surfactant was possible by means of FO process using seawater.
