(559q) Produced Water Purification By a Vacuum Flow-through Evaporation
In this work, we demonstrate significantly enhanced water flux and ion rejection rate in ZnO deposited membranes by a vacuum flow-through evaporation. ZnO was deposited on macroporous alumina membranes via atomic layer deposition (ALD) to improve water flux by increasing their hydrophilicity and reducing mass transfer resistance through membrane pore channels. The interaction between ZnO ALD layer and water molecules enhanced water flux and ion rejection rates. Compared to uncoated pristine membranes, it was found that ZnO ALD membranes substantially improved water flux while keeping excellent salt rejection rate.