Data for: Effects of surfactants (SDS, Triton X-100 and CTAB) on the dewaterability of microalgae biomass using pressure filtration
The application of pressure filtration in microalgae harvesting requires chemical treatment in order to reduce membrane fouling and increase water flux. Surfactant has shown potential to enhance microalgae dewaterability by releasing extracellular polymeric substances (EPS). In this study, the effect of three surfactants including anionic sodium dodecyl sulfate (SDS), non-ionic triton X-100 and cationic cetyl trimethyl ammonium bromide (CTAB) on dewaterability of Chlamydomonas sp. was investigated. Filtration fluxes and biomass concentrations were used to evaluate the microalgae dewaterability. Based on the results, SDS and Triton X-100 had negative effect on the dewaterability of microalgae biomass. However, CTAB improved the dewaterability by decreasing negative charge of microalgae biomass. The optimum dosage of CTAB was found to be 1500 mg/L, resulted in 95.8% and 140% improvement on average water flux and biomass concentration, respectively.