• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Viable Methods of Soil and Water Pollution Monitoring, Protection Remdeiation; NATO Science Series IV: Earth and Environmental Sciences; vol.69 >NEW HORIZONS IN PURIFICATION OF LIQUIDS: NOVEL COLLOIDAL AND INTERFACIAL STRATEGIES TO REMOVE HAZARDOUS MOLECULES, VIRUSES AND OTHER MICROORGANISMS FROM WATER
【24h】

NEW HORIZONS IN PURIFICATION OF LIQUIDS: NOVEL COLLOIDAL AND INTERFACIAL STRATEGIES TO REMOVE HAZARDOUS MOLECULES, VIRUSES AND OTHER MICROORGANISMS FROM WATER

机译：纯化液体的新境界：从水中去除有害分子，病毒和其他微生物的新型胶体和界面策略

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effective, affordable removal of hazardous molecules, viruses and bacteria from water is of paramount importance. In this paper, we investigate the use of various novel colloidal and interfacial strategies for such removal. The objective of this work is to develop methodologies for the removal, in a cost-effective manner, of bacteria and viruses from water, with the implication that such methodologies will be applicable to poorer countries which may not be able to afford the more expensive water treatments such as reverse osmosis. We investigate four different treated filter media (microporous polypropylene filters, fabric filters, diatomaceous earth filters and sand filters) for the removal of 60 nm (negatively charged) polystyrene particles, viruses, and bacteria. The filter media are coated to change their surface properties so that they will have a positive surface charge, which will promote Coulombic interactions between the filter media and microbes. Some of the treatments include coating microporous filters with dimethyldioctadecyl ammonium bromide (DDAB), coating of microdenier polyester textile fabric with DDAB or iron hydroxide to impart a positive charge on the surface, coating of diatomaceous earth with metal oxides, metal peroxides, and metal hydroxides, and coating of Ottawa sand with metal hydroxides for removal of Cryptosporidium. The effectiveness of the treatment on the filter media is determined through measurement of the contact angle, zeta potential, and capture efficiency of bacteria and viruses. The mean pore diameter, the number of filters in the media, and column length of the filter media were determined to be some of the factors that significantly influence the capture efficiency.
机译：从水中有效，经济地去除有害分子，病毒和细菌至关重要。在本文中，我们研究了各种新颖的胶体和界面策略对此类去除的使用。这项工作的目的是开发一种以经济有效的方式从水中去除细菌和病毒的方法，这意味着这种方法将适用于较贫穷的国家，这些国家可能无法负担得起更昂贵的水。反渗透等疗法。我们研究了四种不同的处理过的过滤介质（微孔聚丙烯过滤器，织物过滤器，硅藻土过滤器和沙滤器），用于去除60 nm（带负电）的聚苯乙烯颗粒，病毒和细菌。过滤介质经过涂覆以改变其表面性质，因此它们将具有正表面电荷，这将促进过滤介质与微生物之间的库仑相互作用。一些处理包括用二甲基二十八烷基溴化铵（DDAB）涂覆微孔过滤器，用DDAB或氢氧化铁在微旦聚酯纺织织物上涂覆以在表面上带正电荷，用金属氧化物，金属过氧化物和金属氢氧化物涂覆硅藻土。 ，并用金属氢氧化物涂覆渥太华沙以去除隐孢子虫。通过测量接触角，ζ电位以及细菌和病毒的捕获效率，可以确定在过滤介质上进行处理的有效性。确定平均孔径，介质中过滤器的数量以及过滤器介质的柱长是一些会显着影响捕集效率的因素。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号