TY - JOUR
T1 - Microwave-enhanced membrane filtration for water treatment
AU - Fu, Wanyi
AU - Zhang, Wen
N1 - Funding Information:
The authors gratefully acknowledge funding support from the US National Science Foundation Grant CBET-1603609, NJIT Faculty Seed Grant (FSG), and Undergraduate Research and Innovation (URI) Seed Grant. The authors also thank Dr. Mengyan Li and Fei Li at NJIT for help with the 1,4-dioxane measurements, and Dr. Guangshan Zhang for catalyst preparation.
Funding Information:
The authors gratefully acknowledge funding support from the US National Science Foundation Grant CBET-1603609 , NJIT Faculty Seed Grant (FSG), and Undergraduate Research and Innovation (URI) Seed Grant. The authors also thank Dr. Mengyan Li and Fei Li at NJIT for help with the 1,4-dioxane measurements, and Dr. Guangshan Zhang for catalyst preparation.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/12/15
Y1 - 2018/12/15
N2 - Sustaining high flux (permeability) and diversified pollutant rejection (selectivity) are two crucial benchmarks for membrane filtration processes. Here, we report a microwave-enhanced membrane filtration process that uses microwave (MW) irradiated and catalyst-coated ceramic membranes to achieve efficient removal of pollutants (i.e., 1,4-dioxane) and significant mitigation of fouling. MW irradiation was selectively absorbed by catalysts and hydrogen peroxide to produce ‘‘hotpots” on membrane surface that promoted generation of radicals and nanobubbles. These active species enhanced pollutant degradation and further prevented membrane fouling. In contrast to ultrasound and ultraviolet radiations, MW could efficiently penetrate membrane housing materials and selectively dissipate energy to membrane-impregnated catalyst nanoparticles. Our study of MW-assisted membrane filtration processes may open new avenues toward next-generation antifouling and high-efficiency separation techniques.
AB - Sustaining high flux (permeability) and diversified pollutant rejection (selectivity) are two crucial benchmarks for membrane filtration processes. Here, we report a microwave-enhanced membrane filtration process that uses microwave (MW) irradiated and catalyst-coated ceramic membranes to achieve efficient removal of pollutants (i.e., 1,4-dioxane) and significant mitigation of fouling. MW irradiation was selectively absorbed by catalysts and hydrogen peroxide to produce ‘‘hotpots” on membrane surface that promoted generation of radicals and nanobubbles. These active species enhanced pollutant degradation and further prevented membrane fouling. In contrast to ultrasound and ultraviolet radiations, MW could efficiently penetrate membrane housing materials and selectively dissipate energy to membrane-impregnated catalyst nanoparticles. Our study of MW-assisted membrane filtration processes may open new avenues toward next-generation antifouling and high-efficiency separation techniques.
KW - Antifouling membrane
KW - MW-Fenton-like reaction
KW - Membrane filtration
KW - Microwave irradiation
KW - Nanobubbles
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U2 - 10.1016/j.memsci.2018.09.064
DO - 10.1016/j.memsci.2018.09.064
M3 - Article
AN - SCOPUS:85054189394
SN - 0376-7388
VL - 568
SP - 97
EP - 104
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -