Enrichment of Scavenged Particles in Jet Drops Determined by Bubble Size and Particle Position
Enrichment of Scavenged Particles in Jet Drops Determined by Bubble Size and Particle Position
复制标题
DOI：
10.1103/physrevlett.130.054001
复制
发表时间：
2023-02-03
影响因子：
8.6
通讯作者：
Bird, James C.
中科院分区：
文献类型：
--
作者：
Dubitsky, Lena;Mcrae, Oliver;Bird, James C.
当小气泡在受污染的水源中破裂时，产生的液体射流会分解成液滴，这些液滴可以使细菌，病毒和微塑料等固体颗粒雾化。聚集在气泡表面上的颗粒有可能高度集中在喷射液滴中，从而显著增加其影响。它已被假定，只有颗粒小到足以适合在一个薄的微层周围的气泡可以被输送到其影响力的顶部射流下降。然而，在这里，我们证明，不仅可以更大的颗粒被输送到这个喷射下降，而且这些颗粒可以超过以前的富集测量。通过实验和模拟，我们确定的预破裂位置的液体，发展成顶部射流下降和模型如何界面重排结合气泡的尺寸，颗粒的尺寸，和角分布的颗粒在气泡表面上设置颗粒富集。
When small bubbles rupture in a contaminated water source, the resulting liquid jet breaks up into droplets that can aerosolize solid particulates such as bacteria, viruses, and microplastics. Particles collected on the bubble surface have the potential to become highly concentrated in the jet drops, dramatically increasing their impact. It has been assumed that only particles small enough to fit within a thin microlayer surrounding the bubble can be transported into its influential top jet drop. Yet here, we demonstrate that not only can larger particles be transported into this jet drop, but also that these particles can exceed previous enrichment measurements. Through experiments and simulations, we identify the prerupture location of the liquid that develops into the top jet drop and model how interfacial rearrangement combines with the bubble size, particle size, and the angular distribution of particles on the bubble surface to set the particle enrichment.