TY - JOUR
T1 - COMSOL simulation and experimental validation of promoter geometries facilitating citric acid transport in electrodialysis
AU - Chandra, Anusha
AU - Pathiwada, Darshak
AU - Chattopadhyay, Sujay
N1 - Funding Information:
Financial support to execute the experimental work is gratefully acknowledged to Indian Institute of Technology Roorkee (No. IITR/SRIC/244/FIG-Sch-A ), India and Uchhatar Avishkar Yojana project (ICSR/UAY/2016/SN dt.04/01/2017), India.
Funding Information:
Financial support to execute the experimental work is gratefully acknowledged to Indian Institute of Technology Roorkee (No. IITR/SRIC/244/FIG-Sch-A), India and Uchhatar Avishkar Yojana project (ICSR/UAY/2016/SN dt.04/01/2017), India.
Publisher Copyright:
© 2019 Institution of Chemical Engineers
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Citric acid transport facilitation in electrodialysis was investigated using different flow promoter geometries e.g. rod, twisted tape (TT), rectangular winglet (RW) shape vortex generator (VG) and helical screws at four different flow rates 5, 10, 15 and 20 LPH. Flow visualization of 39 promoters (shape, spacing and orientation) were performed using 3D simulation (COMSOL Multiphysics® 5.3a). Based on simulation results, 14 best promoters were selected for experimental determination of ion transport and power consumption from Sherwood number, Sh and Power number, Pn respectively. With increase in flow rate and reduced spacing, Sh increased along with Pn. Mesh type TT performed better than mono layer TT but pressure drop increased. Screw promoter placed parallel to flow showed higher Sh and Pn compared to rod, VG and TT. 50% rise in Sh was noted with helical screw (d/h = 1.33, α = 90°) relative to empty channel. 1.5 times rise in LCDs were noted with conducting TT compared to non-conducting TTs with barely 1.5% increase in Pn. LCDs with conducting TTs were 80% higher compared to empty channel.
AB - Citric acid transport facilitation in electrodialysis was investigated using different flow promoter geometries e.g. rod, twisted tape (TT), rectangular winglet (RW) shape vortex generator (VG) and helical screws at four different flow rates 5, 10, 15 and 20 LPH. Flow visualization of 39 promoters (shape, spacing and orientation) were performed using 3D simulation (COMSOL Multiphysics® 5.3a). Based on simulation results, 14 best promoters were selected for experimental determination of ion transport and power consumption from Sherwood number, Sh and Power number, Pn respectively. With increase in flow rate and reduced spacing, Sh increased along with Pn. Mesh type TT performed better than mono layer TT but pressure drop increased. Screw promoter placed parallel to flow showed higher Sh and Pn compared to rod, VG and TT. 50% rise in Sh was noted with helical screw (d/h = 1.33, α = 90°) relative to empty channel. 1.5 times rise in LCDs were noted with conducting TT compared to non-conducting TTs with barely 1.5% increase in Pn. LCDs with conducting TTs were 80% higher compared to empty channel.
KW - Electrodialysis
KW - Flow hydrodynamics
KW - Helical screw
KW - Power number
KW - Twisted Tape
KW - Vortex generator
UR - http://www.scopus.com/inward/record.url?scp=85059940557&partnerID=8YFLogxK
U2 - 10.1016/j.cherd.2018.12.024
DO - 10.1016/j.cherd.2018.12.024
M3 - Article
AN - SCOPUS:85059940557
SN - 0263-8762
VL - 142
SP - 386
EP - 411
JO - Chemical Engineering Research and Design
JF - Chemical Engineering Research and Design
ER -