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Overcoming Salt Crystallization During Solar Desalination Based on Diatomite-Regulated Water Supply
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-01-10 , DOI: 10.1021/acssuschemeng.9b06102 Changkun Liu 1 , Chaojie Cai 1 , Xinzhen Zhao 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-01-10 , DOI: 10.1021/acssuschemeng.9b06102 Changkun Liu 1 , Chaojie Cai 1 , Xinzhen Zhao 1
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Solar evaporation as a sustainable technology has exhibited great potential to solve the shortage problem of water and energy. In this article, conductive ink EL-P-3040 (rich in poly(3,4-ethylenedioxythiophene), PEDOT) and diatomite were used as the composite functional layer to prepare a new type of solar evaporator, which showed excellent photothermal conversion and evaporation performance with the evaporation rate of 1.41 kg/m2 h and solar energy utilization of 88.6%. Furthermore, salt crystallization during solar desalination was effectively overcome. PEDOT segment at the evaporation interface could in situ heat the surrounding water molecules by efficient photothermal conversion. Diatomite as the hydrophilic medium was successfully embedded in the ink layer to construct water channels for water transportation to the evaporation interface. At the same time, the transport of salt ions was blocked by diatomite to suppress supersaturation of salt solution and eliminate the phenomenon of salt crystallization at the evaporation interface. The purpose of this study is to provide valuable reference for the practical desalination application of solar evaporation.
中文翻译：
基于硅藻土调节供水的太阳能淡化过程中克服盐的结晶
太阳蒸发作为一种可持续技术，在解决水和能源短缺问题方面具有巨大潜力。本文以导电油墨EL-P-3040（富含聚（3,4-乙烯二氧噻吩），PEDOT）和硅藻土为复合功能层，制备了新型的太阳能蒸发器，该蒸发器表现出优异的光热转化和蒸发性能蒸发速率为1.41 kg / m 2的高性能h和太阳能利用率为88.6％。此外，有效地克服了太阳能脱盐期间的盐结晶。蒸发界面上的PEDOT段可以通过有效的光热转化原位加热周围的水分子。将硅藻土作为亲水性介质成功地嵌入到油墨层中，以构建水通道，以将水输送到蒸发界面。同时，硅藻土阻止了盐离子的运输，从而抑制了盐溶液的过饱和并消除了盐在蒸发界面上的结晶现象。这项研究的目的是为太阳能蒸发的实际脱盐应用提供有价值的参考。
更新日期：2020-01-10
中文翻译：
基于硅藻土调节供水的太阳能淡化过程中克服盐的结晶
太阳蒸发作为一种可持续技术，在解决水和能源短缺问题方面具有巨大潜力。本文以导电油墨EL-P-3040（富含聚（3,4-乙烯二氧噻吩），PEDOT）和硅藻土为复合功能层，制备了新型的太阳能蒸发器，该蒸发器表现出优异的光热转化和蒸发性能蒸发速率为1.41 kg / m 2的高性能h和太阳能利用率为88.6％。此外，有效地克服了太阳能脱盐期间的盐结晶。蒸发界面上的PEDOT段可以通过有效的光热转化原位加热周围的水分子。将硅藻土作为亲水性介质成功地嵌入到油墨层中，以构建水通道，以将水输送到蒸发界面。同时，硅藻土阻止了盐离子的运输，从而抑制了盐溶液的过饱和并消除了盐在蒸发界面上的结晶现象。这项研究的目的是为太阳能蒸发的实际脱盐应用提供有价值的参考。
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