Identifying pore wetting thresholds of surfactants in direct contact membrane distillation

摘要: Abstract Direct contact membrane distillation (DCMD) is a potential on-site water treatment option for reuse at solar energy facilities that require cooling and cleaning of panels/mirrors. Surfactants, which are often used as part panel washing, can negatively impact the hydrophobic DCMD membranes diminish quality treated water. In this work, surfactant effects on were evaluated to assist in developing standard operating procedures wash waters by systems. A non-ionic an anionic tested bench-scale system using commercially available varying materials pore sizes. The concentration wetting occurred was determined novel graphical method developed work verified analytically. All had reduced hydrophobicity after being exposed surfactants, all have lower concentrations than surfactant. Pore size no significant effect concentrations. Overall, it material most performance, with PTFE able tolerate higher both types before wetting.