Research Papers by Stephen Gray

Brine management is a major bottleneck for coal seam gas (CSG) production in Australia. This study investigated the concentration of CSG reverse osmosis (RO) brine using a pilot membrane distillation (MD). The system was equipped with a novel spiral-wound air gap membrane distillation (AGMD) module.

• 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

• Direct contact membrane distillation (DCMD) was trialled for three months. • Trial pilot plant supplied with waste heat b 40 °C from power station • Water recovery 92.8% reached treating ion exchange regeneration effluent • Trial fluxes between 2 to 5 L/(m2·h), sensitive to heating or cooling temper