TY - JOUR
T1 - Reproducing the pressure–time signature of membrane filtration: The interplay between fouling, caking, and elasticity
AU - Herterich, J.G.
AU - Griffiths, I.M.
AU - Vella, D.
N1 - KAUST Repository Item: Exported on 2021-03-12
Acknowledged KAUST grant number(s): KUK-C1-013-04
Acknowledgements: JGH was supported by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST), and the Bracken Bequest. IMG is grateful to the Royal Society for funding through a University Research Fellowship.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2019/5
Y1 - 2019/5
N2 - We develop a mathematical model of direct-flow filtration operating at constant flux to understand the pressure–time signature. We combine the effects of fluid flow with those of membrane fouling and caking to explain the gradual increase in driving pressure that is often reported. We model the periodic backflushes used to clean such membranes and show that the elasticity of the membrane may explain the limited effectiveness of these backflushes. We also consider strategies for the operation of direct-flow filtration and show that tuning the flux and rate of backflushing, as well as the membrane material structure, may allow for improvements in membrane performance.
AB - We develop a mathematical model of direct-flow filtration operating at constant flux to understand the pressure–time signature. We combine the effects of fluid flow with those of membrane fouling and caking to explain the gradual increase in driving pressure that is often reported. We model the periodic backflushes used to clean such membranes and show that the elasticity of the membrane may explain the limited effectiveness of these backflushes. We also consider strategies for the operation of direct-flow filtration and show that tuning the flux and rate of backflushing, as well as the membrane material structure, may allow for improvements in membrane performance.
UR - http://hdl.handle.net/10754/668089
UR - https://linkinghub.elsevier.com/retrieve/pii/S0376738818326802
UR - http://www.scopus.com/inward/record.url?scp=85061573959&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2018.12.073
DO - 10.1016/j.memsci.2018.12.073
M3 - Article
SN - 0376-7388
VL - 577
SP - 235
EP - 248
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -