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      Harvesting Microalgae Biomass Using Sulfonated Polyethersulfone (SPES)/PES Porous Membranes in Forward Osmosis Processes

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          Abstract

          This study was performed to investigate the availability of forward osmosis (FO) for microalgae harvesting using sulfonated polyethersulfone (SPES)/PES porous membranes. In FO process, porous membranes (< 25.0 L m −2 h −1) exhibited more superior water flux than TFC FO membranes (<2.6 L m −2 h −1). Furthermore, the incorporation of SPES has been demonstrated to enhance membrane performance. The effects of SPES content on pore structure and separation performance were investigated. Compared with pure PES porous membranes, porous membranes with 40% SPES yielded an improved hydrophilicity and greater porosity. It exhibited two times higher water fluxes than the pure PES porous membrane. For microalgae harvesting, AL-FS mode (active layer facing the feed solution) was more favourable than AL-DS mode (active layer facing the draw solution) because less deposited microalgae on the active layer mitigate the membrane biofouling. FO operation combined with SPES/PES porous membranes is conducive to preserving microalgae cell integrity under the mild condition. In addition, FO membrane can be cleaned by a simple water rinse. Potential implications were highlighted as a sustainable method for microalgae harvesting because of no pressure input and less chemical cleaning demand.

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          Author and article information

          Journal
          JOUC
          Journal of Ocean University of China
          Science Press and Springer (China )
          1672-5182
          15 November 2020
          01 December 2020
          : 19
          : 6
          : 1345-1352
          Affiliations
          1Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
          2College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
          3College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
          4Zhaoyuan Marine and Fishery Supervision and Inspection Squadron, Zhaoyuan 265400, China
          Author notes
          *Corresponding authors: WANG Xiaojuan, E-mail: safiya0524@ 123456163.com ; GAO Xueli, E-mail: gxl_ouc@ 123456126.com
          Article
          s11802-020-4382-8
          10.1007/s11802-020-4382-8
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2020.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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          Self URI (journal-page): https://www.springer.com/journal/11802

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