Decreasing Filter Cake Resistance by Using Packing Structures. Issue 10 (3rd September 2018)

• Record Type: Journal Article
• Authors: Bandelt Riess, Peter M.; Engstle, Jörg; Kuhn, Michael; Briesen, Heiko; Först, Petra
• Is Part Of: Chemical engineering & technology. Volume 41:Issue 10(2018)
• Page Start: 1956
• Page End: 1964
• Publication Date: 2018-09-03
• Subjects: Biogenic suspension -- Cake filtration -- Filter cake resistance -- Packed bed -- Process strategy; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201800254
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Packed beds used in absorption columns are evaluated to determine whether they can also be beneficial for cake‐forming filtrations. To assess this, model systems are characterized and separated by using a dead‐end filter cell. Filtrations are conducted with different packings; the filtrate amount over time and resulting turbidity are evaluated. Packings increase the filter cake resistance and the separation time of the cakes formed with approximately incompressible solids. However, they exhibit a positive effect on the filtration of a more complex, compressible substance; the process is not only accelerated, but also the quality of the obtained filtrate is not compromised. These results demonstrate potential in the use of packed beds for the filtration of complex biogenic suspensions. Abstract : Cake filtration is an important solid‐liquid separation technique that becomes time‐consuming if suspensions are hard to filter. Thus, a novel and simple, but promising, process strategy of using packed beds is introduced. The approach shows considerable potential to enhance the efficiency of the industrial separation of complex organic substances.