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Thermocatalytic membrane distillation for clean water production
npj Clean Water ( IF 11.4 ) Pub Date : 2020-07-17 , DOI: 10.1038/s41545-020-00082-2
Katarzyna Janowska , Vittorio Boffa , Mads Koustrup Jørgensen , Cejna Anna Quist-Jensen , Fabien Hubac , Francesca Deganello , Fabrício E. Bortot Coelho , Giuliana Magnacca

Natural water bodies and treated wastewaters contain an increasing variety of organic micropollutants with a negative impact on ecosystems and human health. Herein, we propose an integrated process based on membrane distillation and advanced oxidation, in which thermal energy is simultaneously used to drive the permeation of pure water through a hydrophobic membrane and to activate the generation of reactive oxygen species by a thermocatalytic perovskite, namely Ce-doped strontium ferrate. At a feed temperature of 65 °C, our thermocatalytic distillation apparatus can effectively retain and degrade bisphenol A, as model pollutant, while producing distilled water at the constant rate of 1.60 ± 0.03 L h−1 m−2, over four continuous runs. Moreover, the membrane makes degradation faster by concentrating the pollutant during filtration. Our technology is effective in the production of pure water without creating a toxic concentrate, it relies on simple process design, and it does not require high pressure or additional chemicals. In addition, it can potentially work continuously driven by renewable thermal energies or waste heat.



中文翻译:

热催化膜蒸馏用于清洁水生产

天然水体和经过处理的废水中含有越来越多的有机微污染物,对生态系统和人类健康产生负面影响。本文中,我们提出了一种基于膜蒸馏和高级氧化的集成工艺,其中同时使用热能来驱动纯水通过疏水膜的渗透,并通过热催化钙钛矿(即Ce-掺杂高铁酸锶。在65°C的进料温度下,我们的热催化蒸馏装置可以有效地保留和降解作为模型污染物的双酚A,同时以1.60±0.03 L h -1  m -2的恒定速率产生蒸馏水。,连续四次运行。而且,该膜通过在过滤过程中浓缩污染物而使降解更快。我们的技术有效地生产纯净水而不会产生有毒的浓缩物,它依靠简单的工艺设计,并且不需要高压或其他化学药品。此外,在可再生热能或废热的推动下,它有可能连续工作。

更新日期:2020-07-17
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