Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, Rennes, France.
Laboratoire de Biotechnologie Appliquée: Biomolécules, Biothérapies et Bioprocédés du Centre AZM pour la Recherche en Biotechnologie et ses Applications, Université Libanaise, Beyrouth, Lebanon.
Environ Technol. 2020 Jul;41(18):2314-2336. doi: 10.1080/09593330.2018.1564072. Epub 2019 Feb 18.
This paper studies original protocols of rapid PES/PVP membrane NaOCl degradation allowing at reaching ageing states that are representative of industrial ageing. The long term objective is to propose basis for further fundamental studies aiming at the improvement of the impact of membrane ageing on behaviour in UF (fouling and cleaning mastering). The key of several protocols is the use of ageing acceleration thanks to microwave irradiation, either continuous or pulsed ones, that can be further associated (or not) with short ageing time in UF conditions. To evaluate the representativeness of obtained aged membranes, comparisons are achieved between pristine, voluntary laboratory aged membranes and an industrial membrane at the end of its service-life. Several physico-chemical analyses were used (ATR-FTIR, SEM-EDX, contact angle, SEC-HPLC). Evaluation of UF performances were made in UF of a model protein (Lysozyme, 14,300 g.mol). Finally, the proof of concept is done that conditions using MW exist to reach ageing state representative of industrial ageing.
本文研究了快速 PES/PVP 膜 NaOCl 降解的原始方案，使膜达到工业老化的代表性老化状态。长期目标是为进一步的基础研究提供依据，旨在提高膜老化对超滤（污垢和清洗控制）性能的影响。几种方案的关键是利用微波辐射（连续或脉冲）进行老化加速，微波辐射可以（或不）与超滤条件下的短老化时间进一步结合。为了评估获得的老化膜的代表性，在实验结束时将原始膜、自愿实验室老化膜和工业膜进行了比较。使用了几种物理化学分析方法（ATR-FTIR、SEM-EDX、接触角、SEC-HPLC）。超滤性能的评估是在超滤模型蛋白（溶菌酶，14300g/mol）时进行的。最后，证明了存在使用 MW 的条件可以达到工业老化的代表性老化状态。
