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相关概念视频

Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

200
Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
200
Filtration00:53

Filtration

921
Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
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A Modified EPA Method 1623 that Uses Tangential Flow Hollow-fiber Ultrafiltration and Heat Dissociation Steps to Detect Waterborne Cryptosporidium and Giardia spp.
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通过水性界面过和吸收不断净化空气

Yunmao Zhang1, Yuhang Han1, Xiaoliang Ji2

  • 1State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.

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|September 26, 2022
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概括

一个新型空气净化系统使用涂层矩阵中的功能液体,以连续无维护地过颗粒物和污染物. 这种耐用,可重复使用的系统实现了高效率,为各种环境的空气清洁提供了可持续的解决方案.

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科学领域:

  • 材料科学
  • 环境工程
  • 化学工程

背景情况:

  • 空气中的颗粒物污染对健康构成重大风险,因此需要有效的空气净化技术.
  • 目前的空气过系统需要定期维护,并因过器更换而产生固体废物.

研究的目的:

  • 开发一个高效,连续和无维护的空气净化系统.
  • 解决传统空气过器的局限性,包括维护,成本和废物产生.

主要方法:

  • 一个离子合的聚合物涂层矩阵被透到一个功能液体中.
  • 空气通过气泡通过系统进行净化,利用功能性流体接口进行过.
  • 使用理论建模和实验验证来评估系统性能.

主要成果:

  • 该系统表现出高效率,一次性空气净化达到99.6%.
  • 它具有950g/m2的可观吸尘能力.
  • 净化系统耐用,耐腐蚀,功能液体可重复使用,可用于清除细菌或气味.

结论:

  • 一个使用功能液体的新型无维护空气净化系统已经开发出来.
  • 该系统提供了高效率,强度和可重复使用性,为传统过器提供了可持续的替代方案.
  • 这项技术对医院,工厂和矿山等关键环境中的专用空气净化器具有前景.