Nanobubbles produced by hydraulic air compression technique  

作　　者：Xiaodong Yang Qingfeng Yang Limin Zhou Lijuan Zhang Jun Hu 杨晓东;杨庆峰;周利民;张立娟;胡钧(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China;Shanghai Tech University,Shanghai 201210,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China [3]Shanghai Tech University,Shanghai 201210,China [4]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics B》2022年第5期459-463,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11874379,11575281,and U1532260);the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant Nos.KJZD-EW-M03and QYZDJ-SSW-SLH019)。

摘　　要：The anoxia of coastal water has already been a serious problem all over the word.Nanobubbles are proved to have great applications in water remediation because they could effectively increase the oxygen content and degrade organic matters in water.But the existing methods to produce nanobubbles are complicated and high cost to operate,especially in deep sea.In this paper,we presented a low-cost method,hydraulic air compression(HAC),to produce a large number of nanobubbles and proved that nanoscale gas bubbles could be produced by HAC for the first time.Nanoparticle tracking analysis was used to measure the size and concentration of produced nanobubbles.It indicated that the concentration of nanobubbles would increase as the downpipe height increases.Degassed measurements proved that produced“nanoparticles”are gas nanobubbles indeed.More dissolved oxygen in water would provide the source for larger number of nanobubble formation.Those results are expected to be very helpful for water remediation in ocean in the future.

关 键 词：NANOBUBBLE water remediation nanobubble generation dissolved oxygen hydraulic air compression 

分 类 号：X55[环境科学与工程—环境工程] TB383.1[一般工业技术—材料科学与工程]