Filtration of dispersed nanoparticles using cyclone and ultrasonic atomization

Jihee Jung; Moojoon Kim; Jungsoon Kim

doi:10.7776/ASK.2022.41.1.009

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2022 Vol.41, Issue 1 Preview Page Next Page

Research Article

Filtration of dispersed nanoparticles using cyclone and ultrasonic atomization 초음파 무화 및 사이클론을 이용한 분산된 나노입자의 여과법

January 2022. pp. 9-15

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Abstract

In order to overcome the limitation of conventional nanoparticle dispersion methods such as sonicator or homogenizer, a filtration method using an ultrasonic atomization effect and cyclones was proposed in this study. A 0.5 wt% suspension was made with Al₂O₃ powder with an average diameter of 250 nm. The suspension was filtered by the proposed method after pre-dispersing using a sonicator and a homogenizer, respectively. As the result, in the case of the suspension after pre-dispersing with a sonicator, the particle size distribution of the filtered suspension started showing up a single normal distribution indicating the mode of the average diameter only after the 3rd cyclone process. On the other hand, in the case of the suspension with the homogenizer pre-dispersion, similar results appeared from the 2nd cyclone process. Filtration of various types of nanoparticles is expected to be possible by adjusting ultrasonic atomization frequency and manipulating the design of the cyclone.

Keywords

Ultrasound

Atomization

Cyclone

Filtration

Separated nanoparticles

기존의 나노입자 현탁액의 분산과정의 한계를 극복하여 단분산된 나노입자만으로 이루어진 현탁액을 얻기 위하여, 기존의 방법으로 전분산 처리된 현탁액을 다시 초음파 무화효과 및 사이클론을 이용하여 여과하는 방법을 제안하였다. 평균직경 250 nm인 Al₂O₃나노입자로 0.5 wt%인 현탁액을 만들어 초음파세척기 및 호모지나이저를 이용하여 각각 전처리 분산된 현탁액에 대하여 제안한 여과법을 적용하였다. 그 결과 초음파세척기로 전처리 분산한 경우 단분산된 나노입자 현탁액으로 여과하기 위해서는 종속 연결된 사이클론이 3개가 요구되는 반면, 호모저나이저로 전처리 분산된 현탁액의 경우는 2개의 사이클론으로도 가능함을 확인 하였다. 초음파 무화기 주파수의 조정과 사이클론의 설계 변경에 의해 다양한 종류의 나노입자에 대한 여과가 가능할 것으로 기대된다.

키워드

초음파

무화

사이클론

여과법

나노입자 분리

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 41
No :1
Pages :9-15
Received Date : 2021-12-01
Revised Date : 2021-12-23
Accepted Date : 2021-12-28
DOI :https://doi.org/10.7776/ASK.2022.41.1.009

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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