Influence of feed/permeate velocity on scaling development in a direct contact membrane distillation
- Publication Type:
- Journal Article
- Separation and Purification Technology, 2014, 125 pp. 291 - 300
- Issue Date:
In this study the performance and scaling pattern of a direct contact membrane distillation (DCMD) was investigated at different feed and permeate flow velocities (vfand vp). The results indicated that both vfand vpinfluenced DCMD performance and scaling development. A combination setting of vf= 0.8 m s-1and vp= 1.1 m s-1resulted in a similar permeate flux as vfand vp= 1.1 m s-1with a 30% higher recovery ratio and 60% lower pumping energy membrane analysis demonstrated bulk crystallisation tendency at high flow velocity ranges (1.1-2.2 m s-1), while membrane surface crystallisation was dominant at lower flow velocities (0.5-0.8 m s-1). A combination setting (vf= 0.8 m s-1and vp= 1.1 m s-1) showed beneficial outcome of reduced surface crystallisation tendency. © 2014 Elsevier B.V. All rights reserved.
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