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首页> 外文期刊>Environmental Science & Technology >Bactericidal Paper Impregnated with Silver Nanoparticles for Point-of-Use Water Treatment
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Bactericidal Paper Impregnated with Silver Nanoparticles for Point-of-Use Water Treatment

机译：纳米银浸渍的杀菌纸，用于使用点水处理

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摘要

There is an urgent need for cheap point-of-use methods to purify drinking water. We describe a method to deactivate pathogenic bacteria by percolation through a paper sheet containing silver nanoparticles. The silver nanoparticles are deposited by the in situ reduction of silver nitrate on the cellulose fibers of an absorbent blotting paper sheet The aim is to achieve inactivation of bacteria during percolation through the sheet, rather than removal of bacteria from the effluent by filtration. The silver-nanoparticle containing (AgNP) papers were tested for performance in the laboratory with respect to bacteria inactivation and silver leaching as suspensions of bacteria percolated through the paper. The AgNP sheets exhibited antibacterial properties toward suspensions of Exherichia coli and Entemcoccus faecalis, with log reduction values in the effluent of over log 6 and log 3, respectively. The silver loss from the AgNP sheets was minimal, with values under 0.1 ppm (the current US EPA and WHO limit for silver in drinking water). These results show promise that percolation of bacteriatty contaminated water through paper embedded with silver nanoparticles could be an effective emergency water treatment
机译：迫切需要廉价的使用点方法来净化饮用水。我们描述了一种通过含有银纳米颗粒的纸张通过渗滤来灭活病原细菌的方法。通过在吸收性吸水纸的纤维素纤维上原位还原硝酸银，使纳米银沉积在吸水纸的纤维素纤维上。目的是在渗滤过程中使细菌灭活，而不是通过过滤从废水中去除细菌。在实验室中测试了含银纳米颗粒（AgNP）纸在细菌灭活和银浸出方面的性能，因为细菌悬浮液会渗透到纸中。 AgNP片材表现出对大肠埃希氏菌和粪肠球菌的悬浮液的抗菌性能，流出物中的log降低值分别超过log 6和log 3。 AgNP板中的银损失极小，其值低于0.1 ppm（当前的美国EPA和WHO对饮用水中银的限制）。这些结果表明，通过嵌有银纳米颗粒的纸张渗出细菌污染的水有望成为一种有效的应急水处理方法。

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  • 来源
    《Environmental Science & Technology》 |2011年第5期|p.1992-1998|共7页
  • 作者

    Theresa A. Dankovich; Derek G. Gray;

  • 作者单位

    Department of Chemistry, McGill University, Pulp and Paper Building, Montreal, QC, Canada H3A 2A7;

    Department of Chemistry, McGill University, Pulp and Paper Building, Montreal, QC, Canada H3A 2A7;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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