Reverse Salt Flux Effect on Dewatering Chlorella vulgaris in a Forward Osmosis System

Microalgae shows a high potential to produce biofuel and forward osmosis (FO) has been proposed as promising dewatering process for algal biomass separation from water. However, the effect of reverse salt flux (RSF) on during using FO not completely explored. This study was investigate different types their concentrations in terms conductivity, settling velocity, lipid contents FS simulated FO-driven Chlorella vulgaris microalgae. Three draw solution (DS) salts (NaCl, KCl NH4Cl) were evaluated RSF-simulating batch tests. The diffusion DS feed (FS) caused static growth while increasing content up 14.8% at 8 mM NH4Cl. With addition salts, pH maintained optimal thriving range (7.2–10.6), but presence stressed cells inhibited photosynthesis within experimental conditions. velocity improved with increase 80 each DS. It seemed that cell division could be accelerated NH4Cl, microscopic images showed change size distribution, which may negatively affect settleability. an FO-algal harvesting system should selected based final properties constituents required.