Fouling mitigation in crossflow filtration using chaotic advection: A numerical study. Issue 1 (8th October 2019)

• Record Type: Journal Article
• Authors: Jung, Seon Yeop; Jung, Hae In; Kang, Tae Gon; Ahn, Kyung Hyun
• Is Part Of: AIChE journal. Volume 66:Issue 1(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-10-08
• Subjects: chaotic advection -- crossflow filtration -- fouling -- numerical simulation -- static mixer; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.16792
• Languages: English
• ISSNs: 0001-1541

Abstract

Abstract: Fouling mitigation in a crossflow filtration system using chaotic advection is numerically studied. A barrier‐embedded partitioned pipe mixer (BPPM) is selected as a static mixer, creating chaotic advection in a laminar flow regime. Mixing characteristics are controlled via two design parameters, the mixing protocol and the dimensionless barrier height ( β ). The average dimensionless concentration boundary layer thickness ( δ ¯ B / R ) and the surface‐averaged dimensionless wall concentration ( c ¯ w ) dramatically decrease with the introduction of the BPPM, incorporating a chaotic flow system. δ ¯ B / R and c ¯ w decrease as β increases, and the largest reduction of c ¯ w is observed in the counter‐rotational protocol. A semi‐ring configuration is revealed to be the most appropriate configuration to characterize mixing near the membrane surface. It is found that a filtration system with a globally chaotic flow shows the best mixing performance and the largest reduction of fouling.