Membrane distillation

Fouling and scaling is one of the major challenges in membrane distillation process. This study investigates the utilizing of thermal rejected brine produced from multi-stage flash distillation (MSF) to minimize fouling and scaling on membranes in direct contact membrane distillation (DCMD) settings.

• Modifications of support layer were conducted using a commercial PTFE/PP bi-composite membrane. • Macro punctures of support layer were designed based on the porosity of the support layer. • Porosity of support layer and sizes of macro punctures affected the fluxes of the modified membranes. • The or

In this study, a laboratory-scale membrane distillation (MD) system was developed for advanced treatment of biologically treated coking wastewater (BTCW), while the effect of pre-coagulation was also investigated. Results showed that membrane distillation could effectively reject the salts (N99.1%)

• A simplified membrane distillation coefficient calculation method is validated. • A stepwise modeling approach is shown to accurately model large-scale DCMD membrane modules. • A new spacer modeling method accounts for woven spacers with complex geometries. • Distribution of water flux, temperature a

Membrane scaling during water desalination by membrane distillation has been studied. A tap water was applied as a feed and diluted HCl solutions were used for periodical cleaning of module. The membrane morphology and the composition of deposits were determined using scanning electron microscopy co

Membrane distillation (MD) is a process in which the driving force for mass transfer is temperature gradient rather than conventional ones based on density, static pressure, chemical nature, affinity, and freezing point gradients. Using a porous hydrophobic membrane, MD comes into four configurations;

Membrane distillation (MD) has become an area of rapidly increasing research and development since the 1990s, providing a potentially cost effective thermally-driven desalination technology when paired with waste heat, solar thermal or geothermal heat sources. One principal challenge for MD is scali

• Reduction of distillate flux is primarily caused by precipitation of CaCO3 and CaSO4. • Changing of pH in hot bulk brine provides early indication of scaling formation. • Inline cartridge filtration improves DCMD operational time and water recovery. • Antiscalant prolongs DCMD operational time by mi

Membrane distillation (MD) is a promising desalination technology for water recovery from high-salinity solutions such as RO brine. Despite its great potential, MD has not been industrially realized because this technique generates a lower flux than reverse osmosis processes and exhibits a lower ther

• Organosilica membranes with different pore sizes were made via soft-templating. • Calcination atmospheres influenced surface chemistry but not bulk hydrophobicity. • F127 templated membranes gave higher fluxes in MD but suffered from pore wetting. Organosilica membranes were successfully synthesized