TY  - MANSCPT
AU  - Lim Soon Yee
TI  - Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity
SN  - THE0009105(Local)
PY  - 2020///
CY  - Kuantan, Pahang
PB  - UMP
KW  - Faculty of Chemical and Process Engineering Technology
KW  - Universities and colleges
KW  - Dissertations
KW  - Theses
N1  - Faculty of Chemical and Process Engineering Technology; Thesis (Master of Science) -- Universiti Malaysia Pahang – 2020; Includes bibliographical references
N2  - One  of  the  most  noteworthy  achievements  in  reverse  osmosis  (RO)  efficiency  is  the  improvement  in  membrane  permeance.  Although  current  membranes  offer  higher  permeance (and flux) than older RO membranes, increases in permeate flux are limited  by concentration polarisation (CP) and fouling. Therefore, innovation is needed to reduce  CP to further increase permeate flux. An unsteady forced slip velocity can disrupt the  boundary layer, thus reducing CP. This paper uses Computational Fluid Dynamics (CFD)  to analyse the effect of membrane permeance on the resonant frequency for an unsteady  forced slip velocity, as well as the resulting mass transfer enhancement. The results show  that the resonant frequency of the unsteady forced slip velocity is not affected by the membrane  permeance.  Although  the  results  show  a  peak  in  the  mass  transfer  enhancement factor for permeance values in the range typically used for brackish water,  In  addition,  this  thesis  found  that  that  at  any  membrane  permeance,  slip  velocity  can  increase the maximum shear stress (𝜏̅𝑚𝑎𝑥) by at least 130 %, thus minimising the effects  of fouling
ER  -