TY  - JOUR
SN  - 20770375
PB  - MDPI
Y1  - 2022///
VL  - 12
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138752588&doi=10.3390%2fmembranes12090860&partnerID=40&md5=622f5aa1736977bf54244ab60c65bcc0
A1  - Yun, T.S.
A1  - Oh, P.C.
A1  - Toh, M.J.
A1  - Yap, Y.K.
A1  - Te, Q.Y.
JF  - Membranes
AV  - none
KW  - Alumina; Contact angle; Dispersions; Energy dispersive X ray analysis; Manganese oxide; Membranes; Pore size; Ultrafiltration; Wastewater treatment; X ray diffraction analysis
KW  -  Hydrous manganese dioxide; Membrane fluxes; Mixed-matrix membranes; Nanofiller; Oily wastewater; Oily wastewater treatment; Poly(ether sulfone); Polyether sulfone; Super-hydrophilic; Superhydrophilic mixed matrix membrane
KW  -  Aluminum oxide
ID  - scholars16384
TI  - Xylem-Inspired Hydrous Manganese Dioxide/Aluminum Oxide/Polyethersulfone Mixed Matrix Membrane for Oily Wastewater Treatment
IS  - 9
N2  - Ultrafiltration membrane has been widely used for oily wastewater treatment application attributed to its cost-efficiency, ease of operation, and high separation performance. To achieve high membrane flux, the pores of the membrane need to be wetted, which can be attained by using hydrophilic membrane. Nevertheless, conventional hydrophilic membrane suffered from inhomogeneous dispersion of nanofillers, causing a bottleneck in the membrane flux performance. This called for the need to enhance the dispersion of nanofillers within the polymeric matrix. In this work, in-house-fabricated hydrous manganese dioxideâ??aluminum oxide (HMO-Al2O3) was added into polyethersulfone (PES) dope solution to enhance the membrane flux through a xylem-inspired water transport mechanism on capillary action aided by cohesion force. Binary fillers HMO-Al2O3 loading was optimized at 0.5:0.5 in achieving 169 nm membrane mean pore size. Membrane morphology confirmed the formation of macro-void in membrane structure, and this was probably caused by the hydrophilic nanofiller interfacial stress released in PES matrix during the phase inversion process. The superhydrophilic properties of PES 3 in achieving 0° water contact angle was supported by the energy-dispersive X-ray analysis, where it achieved high O element, Mn element, and Al elements of 39.68, 0.94, and 5.35, respectively, indicating that the nanofillers were more homogeneously dispersed in PES matrix. The superhydrophilic property of PES 3 was further supported by high pure water flux at 245.95 L/m2.h.bar, which was 3428.70 higher than the pristine PES membrane, 197.1 higher than PES 1 incorporated with HMO nanofiller, and 854.00 higher than PES 5 incorporated with Al2O3 nanofillers. Moreover, the excellent membrane separation performance of PES 3 was achieved without compromising the oil rejection capability (98.27 rejection) with 12 g/L (12,000 ppm) oily wastewater. © 2022 by the authors.
N1  - cited By 0
ER  -