Solar-assisted distillation is considered promising to solve the freshwater supply for off-grid communities. In this work, a passive and flexible multistage membrane (F-MSMD) device devised produce via solar with latent heat of vapor condensation being recycled enhance its energy efficiency. By designing siphon effect, source water continuously wicked into evaporation layer concentrated brine f...

The heat and mass transfer processes in direct contact membrane distillation (MD) under laminar flow conditions have been analyzed by computational fluid dynamics (CFD). A two-dimensional heat transfer model was developed by coupling the latent heat, which is generated during the MD process, into the energy conservation equation. In combination with the Navies-Stokes equations, the thermal boun...

A multilayered microchip (25 x 95 mm) used for vacuum distillation is designed, fabricated and tested by rectification of a water-methanol mixture. The polymer chip employs a cooling channel to generate a temperature gradient along a distillation channel below, which is separated into a channel (72 microm deep) for liquid phase and a channel (72 microm deep) for vapor phase by an incorporated m...

Abstract Hydrophobic metakaolin-based flat sheet membrane was developed via phase inversion and sintering technique modified through 1H,1H,2H,2H-perfluorooctyltriethoxysilane grafting agents. The prepared characterized by different techniques such as XRD, FTIR, SEM, contact angle, porosity, mechanical strength. Their results indicated that the wettability, structural, properties of confirm suit...

• Mining and hydrometallurgical industries as large generators of acidic liquid wastes. Current management options do not contemplate their valorisation. Membrane technologies provide resource recovery options. New membranes with enhanced properties for long-term industrial operation. The mining generate effluents characterised by a high acidity (pH < 3) content metals (e.g. Fe, Al, Cu Zn, amon...

Heat-activated persulfate preoxidation was recently proposed as a potential approach to mitigate membrane fouling in distillation (MD) for treating actual water. However, the possible mitigation mechanism involved has not yet been elucidated. In this study, we explored relationship between and pretreatment of natural organic matter (NOM) solutions with peroxymonosulfate (PMS). Individual humic ...

A new feasibility analysis methodology generalized from distillation is applied to membrane process. The model is formulated to depict the reactive liquid phase composition on the retentate side of membrane reactors. The effects of both chemical reaction and membrane mass transfer kinetics on the feasible products are elucidated by means of retentate phase diagrams and bifurcation analysis. In ...