Fei He

TL;DR: In this article, the scaling potential of hollow fiber membrane-based crossflow direct contact membrane distillation (DCMD) is analyzed in terms of the saturation index profiles throughout the hollow fiber module as a function of the location in the module for the sparingly soluble salt, CaSO 4, in various forms (such as, gypsum and anhydrite).

TL;DR: In this article, the scaling potential of porous cross-flow hollow fiber-based membrane distillation (MD) processes is analyzed in terms of the saturation index profiles throughout the crossflow hollow-frond membrane module as a function of the location in the module for feed solutions resulting from high water recovery.

TL;DR: In this paper, the effects of antiscalants on mitigating the potential for membrane scaling by calcite and gypsum, respectively, were investigated during the direct contact membrane distillation process (DCMD) implemented with porous hydrophobic polypropylene (PP) hollow fibers having a porous fluorosilicone coating on the fiber outside surface.

TL;DR: In this paper, a cost-efficient desalination technology was developed by integrating a countercurrent cascade of the novel cross-flow direct contact membrane distillation (DCMD) devices and solid polymeric hollow fiber-based heat exchange devices Simulations have been carried out for the whole DCMD cascade to project values of gained output ratio (GOR) as a function of the number of DCMD stages as well as other important factors in the cascade vis-avis the temperatures and flow rates of the incoming hot brine and cold distillate streams.

TL;DR: In this paper, a theoretical analysis of such a series of cascades has been carried out and expressions have been generated to show the relationship between recovery, temperature differences across and between the cascades, and the possible theoretical gained output ratio (GOR) and recoveries that are attainable.