正浸透膜分離法を用いた水処理プロセスの実現に向けた再利用可能な駆動溶液の開発

Forward osmosis (FO) membrane process is an emerging membrane technology for wastewater treatment and desalination. This process enables to achieve a membrane separation with lower energy than conventional pressure-driven ones. However, the realization of effective FO membrane processes essentially needs draw solutions offering both a high osmotic pressure and a facile regeneration mechanism. In this review, the basic explanations of FO membrane process and draw solution are firstly provided. Subsequently, an overview of a variety of draw solutions is presented. Finally, the draw solution based on the magnetic particles modified with polyelectrolytes is explained.