The Effect Of Water And Nanobubble Water On The Removal Of Fine Particles

Nanobubbles or fine bubbles are small gaseous entities that are found on surfaces and in the bulk when solutions are supersaturated with gas.They were first proposed to explain unusual long-range attractive forces observed between hydrophobic surfaces and later imaged on surfaces using atomic force microscopy.However,the observed stability of nanobubbles is inconsistent with current theories of bubble dissolution.Despite the theoretical challenges in understanding nanobubbles,they are already finding applications in a broad range of areas including medicine,crop production,mineral flotation,controlling boundary slip,and bioremediation.The possible advantages of using nanobubbles in a broad range of applications include the ease with which they can be produced,the low cost of materials,and the potential to easily remove them from the system once they have performed their function.Additionally,they may provide solutions to industrial challenges with low environmental impact.It is for this reason that nanobubbles are seen as promising agents for cleaning.The properties and applications of nanobubbles are worth us to explore and have important theoretical significance and application value.The London smog incident that took place in the last century has raised concerns about particulate matter of air.With the development of science and technology,more and more health research results show that particles in the air will do great harm to human health.In order to solve the problem of particulate matter pollution,scientists from different countries pay more attention to the study of particulate matter.If we want to control the particulate matter,we need to reduce the concentration of soot emissions.In the case that the problem of fine particle pollution is becoming more and more prominent,it is necessary to develop and promote relevant control technology with new ideas.In this paper,we research on the size distribution and stability of bulk nanobubbles.Then we study the removal efficiency of water and bulk nanobubbles on the fine particulate matter.Details are as follows:(1)We generate bulk nanobubbles by the bubble generator.The size distribution and the stability of bulk nanobubbles were further studied by using“Nanosight”(a new type of dynamic light scattering).Our results show that the nanobubble particles are mainly distributed in 100-200nm,and the particle concentration reaches 10~8/ml,which can be stable for several hours.Meanwhile,we research on the removal efficiency of water and bulk nanobubbles on fine particulate matter,when the gas pollutant was directly injected to water and nanobubble water.It turns out that it overflows more fine particles than it does directly into the water.The reason for this is that the rise of micro-nano-bubbles in the water will drive and accelerate the rise of fine particles.(2)We first study the particle size distribution and concentration of nano-bubbles before and after spraying by using“Nanosight”(a new type of dynamic light scattering).The results show that the particle size distribution of nanobubbles become more wider and the concentration remain the same.Then,we study the removal efficiency of water and nanobubble water on fine particulate matter in spraying conditions.By spraying 10s,.the removal rate of water is 31.18%,and the removal rate of nanobubbles was 57.56%.The results show that nanobubbles can better remove the fine particulate matter of gas pollutants.