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相关概念视频

Filtration00:53

Filtration

826
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...
826

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通过高温交叉流过商业反透膜的全面表征.

Pooria Karami1,2, Sadegh Aghapour Aktij1,2, Kazem Moradi1

  • 1Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, Alberta T6G 1H9, Canada.

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概括

高温过挑战反透膜,导致性能下降. 流量下降是一个关键问题,限制了先进的水处理应用中的长期使用.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 化学工程是化学工程的重要组成部分.
  • 环境科学 环境科学

背景情况:

  • 开发热稳定的反透膜对于推进高温水处理技术至关重要.
  • 当前商业RO膜在高温下运行时面临性能限制.

研究的目的:

  • 评估商业反透膜在各种高温过条件下的性能和稳定性.
  • 了解高温对膜形态和化学成分的影响.

主要方法:

  • 进行过试验,包括长期运行,循环试验,逐步升温和透度测量.
  • 用形态和生理化学特征来分析过后的膜变化.

主要成果:

  • 工作温度的提高导致了测试膜的水流和盐排斥能力的显著恶化.
  • 流量下降被确定为主要挑战,阻碍商业膜适用于持续高温操作的适用性.

结论:

  • 商用反透膜的热稳定性有限,这影响了它们在高温水处理中的有效性.
  • 需要进一步的研究来开发能够承受长时间暴露在高温下,有效净化水的坚固膜.