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Sustainable removal of nano/microplastics in water by solar energy

文献类型： 外文期刊

作者： Wang, Pengcheng 1 ; Huang, Zongxiong 2 ; Chen, Shan 3 ; Jing, Miaoyu 4 ; Ge, Zhihao 5 ; Chen, Junyan 1 ; Yang, Shuangli 1 ; Chen, Jinghu 1 ; Fang, Yimin 1 ;

作者机构： 1.Nanjing Med Univ, Sch Pharm, Key Lab Cardiovasc & Cerebrovasc Med, Nanjing 211166, Jiangsu, Peoples R China

2.Fujian Fiber Inspect Ctr, Natl Text & Garment Qual Supervis Testing Ctr, Fuzhou 350026, Fujian, Peoples R China

3.Jiangsu Acad Agr Sci, Minist Agr & Rural Affairs, Inst Agr Facil & Equipment, Key Lab Protected Agr Engn Middle & Lower Reaches, Nanjing 210014, Peoples R China

4.Nanjing Med Univ, Wuxi Peoples Hosp, Dept Gastroenterol, Wuxi 214023, Jiangsu, Peoples R China

5.Tianmu Lake Inst Adv Energy Storage Technol Co Lt, Liyang 213300, Peoples R China

关键词： Convection; Nano; microplastics; Microbubble; Solar energy; Water treatment

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：16.744； 五年影响因子：14.61 ）

ISSN： 1385-8947

年卷期： 2022 年 428 卷

页码：

收录情况： SCI

摘要： Plastic pollution in water is of increasing scientific and public concern due to the increasing plastic production, slow degradation rate and low recycling efficiency. However, the present methods for the removal of plastic particles in water are either inefficient or expensive, which limit their wide application. In this work, we propose a new strategy for the efficient removal of plastic particles in water that is driven by solar energy. Sunlight was focused through a glass ball with high power density, which could induce convection and form a microbubble at the interface. The plastic particles were driven into the bubble by convection and subsequently fused in the microbubble, as the temperature in the bubble was much higher than that in the solution due to the significantly different densities. Such a hot microbubble acts as a 'furnace', which can collect and fuse plastic particles into large bulks in the microbubble, facilitating the sustainable removal of plastic particles in water without the use of any chemical or biological reagents or filters. Moreover, this method is quite simple and can effectively utilize free sunlight without requiring extra energy or causing secondary pollution, implying its promising application in dealing with plastic pollution in aquatic ecosystems.

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