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. 2021 Jan 27;11(2):88. doi: 10.3390/membranes11020088

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Flux of nanofiltration membranes with different solutions at 30 bar and 40 °C. (b) Relative flux related to the initial flux with two solutions. Last data points show the relative flux after pressureless membrane rinsing for 30 min.