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The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
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相关实验视频

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生物灵感交织湿表面,用于按需的连续乳液分离.

Hanpeng Gao1, Haiyu Qian1, Zong Meng1

  • 1School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, PR China.

Journal of hazardous materials
|October 11, 2024
PubMed
概括

新的生物仿真表面带有孔和形阵列,增强了连续的乳液分离. 这些交织湿面 (HAIWS和MAIWS) 防止堵塞,保持油性废水处理的高效率和流量.

关键词:
生物模拟学是一种生物模拟学.乳液分离的乳液分离方法接口行为 接口行为交错的可湿性 交错的可湿性多层次结构的多层次结构.

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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:

  • 由于过蛋糕的形成和孔隙堵塞,连续乳液分离在保持高性能方面面临挑战.
  • 现有的分离表面往往会随着时间的推移而退化或需要复杂的清洁程序.
  • 生物仿真方法为设计先进的分离材料提供了潜在的解决方案.

研究的目的:

  • 开发新的交织湿面,以实现高效和按需的乳液分离.
  • 为了研究孔阵列交织湿面 (HAIWS) 和形阵列交织湿面 (MAIWS) 对分离性能的影响.
  • 评估这些表面在连续运行和恶劣条件下的可回收性和稳定性.

主要方法:

  • 使用激光处理,无电离银沉积,醇修饰和喷来制备HAIWS和MAIWS.
  • 对各种乳液类型的分离效率和流量进行评估.
  • 在50个分离周期中测试表面性能,以确定可回收性.
  • 在恶劣的环境条件下评估表面稳定性.

主要成果:

  • HAIWS和MAIWS实现了高分离效率 (∼99.5%和∼99.3%),并保持了高流量 (∼3212和∼3458 L m-2 h-1).
  • 与没有这种结构的表面相比,这些表面显著减少了过蛋糕的形成和毛孔堵塞.
  • 经过50个循环,优化的表面保持了高效率 (∼96.2%和∼95.8%) 和流量,即使在恶劣的条件下,也显示出出色的可回收性和稳定性.

结论:

  • 开发的生物模拟HAIWS和MAIWS为按需的乳液分离提供了有效的机制.
  • 这些表面克服了传统方法的局限性,防止堵塞,并提供更好的可回收性和稳定性.
  • 该战略为设计用于工业油性废水处理的下一代分离装置提供了一种新的方法.