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Interfacial solar evaporation toward efficient recovery of clean water and concentration of nutrients from urine with polypyrrole-based photothermal conversion films
Resources, Conservation and Recycling ( IF 13.2 ) Pub Date : 2022-09-15 , DOI: 10.1016/j.resconrec.2022.106645
Lei Zhang, Jie Liu, Libin Yang, Zhenjiang Yu, Jiabin Chen, Huaqiang Chu, Yalei Zhang, Xuefei Zhou

Urine consists of a mixture of water (90∼95%) and nutrients, which makes it a potential source of clean water and nutrients. Interfacial solar evaporation technology is a highly competitive method for wastewater purification and resource recovery. Herein, a series of polypyrrole-based photothermal conversion films were prepared using ferric chloride, where pyrrole was the raw materials, cotton cloth (CC) and paulownia wood (PW) as the substrates. Indoor solar water and urine evaporation experiments demonstrated that CCF-MH (CC photothermal conversion film-monolithic hydrophobic) was the best solution for the outdoor solar urine evaporation experiment under an imitation tree structure (without PVC) evaporation system. The outdoor solar urine evaporation experiment found that CCF-MHLS (CCFMH-large-scale) could recover 1.1 kg·m−2 of condensed freshwater (meeting WHO standards for drinkable water) at 7.5 h under a low light intensity. This paper provides a new platform for low-cost, high-efficient, and large-scale water recovery and nutrients concentration from urine.



中文翻译:

使用基于聚吡咯的光热转换膜进行界面太阳能蒸发以有效回收清洁水和浓缩尿液中的营养物质

尿液由水(90~95%)和营养物质的混合物组成,这使其成为清洁水和营养物质的潜在来源。界面太阳能蒸发技术是一种极具竞争力的废水净化和资源回收方法。在此,以吡咯为原料,棉布(CC)和桐木(PW)为基材,制备了一系列聚吡咯基光热转换薄膜。室内太阳能水和尿液蒸发实验表明,CCF-MH(CC光热转换膜-单片疏水)是仿树结构(无PVC)蒸发系统下室外太阳能尿液蒸发实验的最佳解决方案。室外太阳能尿液蒸发实验发现CCF-MHLS(CCFMH-large-scale)可回收1.1 kg·m-2在低光照强度下 7.5 小时的冷凝淡水(符合 WHO 饮用水标准)。该论文为低成本、高效、大规模的尿液水回收和营养浓缩提供了一个新的平台。

更新日期:2022-09-16
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