Topic
Nanofiltration
About: Nanofiltration is a research topic. Over the lifetime, 10209 publications have been published within this topic receiving 269355 citations.
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TL;DR: In this paper, the authors derived the phenomenological equations for transport in these processes using the solution-diffusion model and starting from the fundamental statement that flux is proportional to a gradient in chemical potential.
2,864 citations
TL;DR: A comprehensive overview on the development of polymeric membranes having advanced or novel functions in the various membrane sepn processes for liq. and gaseous mixts can be found in this paper.
1,841 citations
TL;DR: A review of the field of thin film composite reverse osmosis membranes, with emphasis on the chemistry and composition of these membranes, is given in this article, with particular attention given to composite membranes that have found commercial use, whether in the present or past.
1,627 citations
TL;DR: Nanofiltration (NF) membranes have come a long way since it was first introduced during the late 80's as mentioned in this paper, and significant development has taken place in terms of the fundamental understanding of the transport mechanism in NF membranes, which has been translated into predictive modeling based on the modified extended Nernst-Planck equation.
1,374 citations
TL;DR: In this article, a method of fabricating ultrathin (22-53 nm thick) graphene nanofiltration membranes (uGNMs) on microporous substrates is presented for efficient water purification using chemically converted graphene (CCG).
Abstract: A method of fabricating ultrathin (≈22–53 nm thick) graphene nanofiltration membranes (uGNMs) on microporous substrates is presented for efficient water purification using chemically converted graphene (CCG). The prepared uGNMs show well packed layer structure formed by CCG sheets, as characterized by scanning electron microscopy, atomic force microscopy, and transmission electron microscopy. The performance of the uGNMs for water treatment was evaluated on a dead end filtration device and the pure water flux of uGNMs was high (21.8 L m−2 h−1 bar−1). The uGNMs show high retention (>99%) for organic dyes and moderate retention (≈20–60%) for ion salts. The rejection mechanism of this kind of negatively charged membranes is intensively studied, and the results reveal that physical sieving and electrostatic interaction dominate the rejection process. Because of the ultrathin nature of uGNMs, 34 mg of CCG is sufficient for making a square meter of nanofiltration membrane, indicating that this new generation graphene-based nanofiltration technology would be resource saving and cost-effective. The integration of high performance, low cost, and simple solution-based fabrication process promises uGNMs great potential application in practical water purification.
1,366 citations