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Ultra salt-resistant solar desalination system via large-scale easy assembly of microstructural units
Energy & Environmental Science ( IF 32.5 ) Pub Date : 2022-11-10 , DOI: 10.1039/d2ee03341k Chenyang Dang, Hua Wang, Yunteng Cao, Jing Shen, Jia Zhang, Letian Lv, Guiyin Xu, Meifang Zhu
Energy & Environmental Science ( IF 32.5 ) Pub Date : 2022-11-10 , DOI: 10.1039/d2ee03341k Chenyang Dang, Hua Wang, Yunteng Cao, Jing Shen, Jia Zhang, Letian Lv, Guiyin Xu, Meifang Zhu
Solar desalination is a zero-pollution, low-energy, off-grid water purification technology. However, the salt residue after water evaporation seriously threatens the continuous use of a solar thermal system. While the salt accumulation issue has been alleviated by complex processing methods and sophisticated material design, such endeavors significantly increased the cost of processing and manufacturing. Herein, we used the gaps created by imperfect chimerism during the easy assembly of microstructural units to provide a pathway for salt excretion and resolve the salt accumulation issue. A convenient solution for manufacturing a large-scale salt-resistant (SR) system is proposed based on the easy assembly of microstructural units. The SR system achieved record-high energy efficiencies of ∼91.5% and ∼84.42% in up to 20 wt% and 25 wt% sodium chloride solution, respectively, under 1 sun irradiation. Hydrophilic photothermal materials worked stably in 3.5 wt% and supersaturated salt water for more than 180 days and 2000 minutes, respectively, without salt accumulation. The cost of freshwater production by the integrated solar desalination system could be as low as ∼$1 m−3. The SR system fabricated via the one-step easy assembly of photothermal materials provides a promising method for the large-scale application of solar desalination.
中文翻译:
通过大规模轻松组装微结构单元的超耐盐太阳能海水淡化系统
太阳能海水淡化是一种零污染、低能耗、离网净水技术。然而,水分蒸发后的盐分残留严重威胁着太阳能热系统的连续使用。虽然复杂的加工方法和复杂的材料设计已经缓解了盐分积累问题,但这些努力显着增加了加工和制造的成本。在此,我们利用在微结构单元的轻松组装过程中由不完美的嵌合体产生的间隙,为盐分排泄提供途径并解决盐分积累问题。基于微结构单元的易于组装,提出了一种制造大规模耐盐(SR)系统的便捷解决方案。SR 系统实现了创纪录的高能效,分别为 ~91.5% 和 ~84。在 1 次太阳照射下,在高达 20 wt% 和 25 wt% 的氯化钠溶液中分别为 42%。亲水光热材料在 3.5 wt% 和过饱和盐水中分别稳定工作超过 180 天和 2000 分钟,没有盐分积累。集成太阳能海水淡化系统的淡水生产成本可低至 100 万美元-3。通过一步轻松组装光热材料制造的SR系统为太阳能海水淡化的大规模应用提供了一种有前途的方法。
更新日期:2022-11-10
中文翻译:
通过大规模轻松组装微结构单元的超耐盐太阳能海水淡化系统
太阳能海水淡化是一种零污染、低能耗、离网净水技术。然而,水分蒸发后的盐分残留严重威胁着太阳能热系统的连续使用。虽然复杂的加工方法和复杂的材料设计已经缓解了盐分积累问题,但这些努力显着增加了加工和制造的成本。在此,我们利用在微结构单元的轻松组装过程中由不完美的嵌合体产生的间隙,为盐分排泄提供途径并解决盐分积累问题。基于微结构单元的易于组装,提出了一种制造大规模耐盐(SR)系统的便捷解决方案。SR 系统实现了创纪录的高能效,分别为 ~91.5% 和 ~84。在 1 次太阳照射下,在高达 20 wt% 和 25 wt% 的氯化钠溶液中分别为 42%。亲水光热材料在 3.5 wt% 和过饱和盐水中分别稳定工作超过 180 天和 2000 分钟,没有盐分积累。集成太阳能海水淡化系统的淡水生产成本可低至 100 万美元-3。通过一步轻松组装光热材料制造的SR系统为太阳能海水淡化的大规模应用提供了一种有前途的方法。