Original Article
  • A Study on Micro-insect Screens Using Coffee Grounds

  • Yu Kyung Lee*, Gyuri Kim*, Min Ji Woo*, Ga In Cho*, Donghyeon Lee**, Mantae Kim***†, Dong-Jun Kwon*,**†

  • * Department of Polymer Science and Engineering, Gyeongsang National University
    ** Department of Materials Science and Convergence Technology, Research Research Institute for Green Energy Convergence Technology, Gyeongsang National University
    *** Aerospace Convergence Materials Center, Korea Institute of Ceramic Engineering and Technology

  • 커피찌꺼기를 활용한 미세방충망 연구

  • 이유경*· 김규리*· 우민지*· 조가인*· 이동현**· 김만태***†· 권동준*,**†

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Due to the increase in coffee consumption, the amount of coffee grounds is also increasing, which leads to environmental problems. In order to solve these problems, this study proposes the utilisation of coffee grounds. In particular, the porous structure of coffee grounds was utilised to optimise a micro insect screen for filtering fine dust. To realize the porous structure of coffee grounds, a polar/non-polar separation method using KOH and n-hexane was applied to obtain coffee grounds with increased porosity. In addition, the composition of an eco-friendly adhesive was identified to fix the coffee grounds to the screen, and the conditions for homogeneous adhesion of the coffee grounds to the screen were optimised. As a result, we confirmed the effect of the number of coatings of coffee grounds on the filtering effect of fine dust, and found that two coatings of coffee grounds increased the filtering.


커피 소비의 증가로 인해 커피 찌꺼기의 양도 증가하고 있으며, 이는 환경 문제로 이어지고 있다. 이러한 문제를 해결하기 위해 본 연구에서는 커피 찌꺼기의 활용 방안을 제시하였다. 특히, 커피 찌꺼기의 다공성 구조를 활용하여 미세먼지 필터링을 위한 미세 방충망 최적화 연구를 수행하였다. 커피 찌꺼기의 다공성 구조를 구현하기 위해 KOH와 헥세인을 사용한 극성/비극성 분리법을 적용하여 다공성을 높인 커피 찌꺼기를 확보하였다. 또한, 커피 찌꺼기를 방충망에 고정하기 위해 친환경 접착제의 조성을 확인하고, 커피 찌꺼기가 균질하게 방충망에 접착되는 조건을 최적화하였다. 결과적으로, 커피 찌꺼기의 코팅 횟수가 미세먼지 필터링 효과에 미치는 영향을 확인하였고, 커피 찌꺼기를 두 번 코팅한 경우 일반 방충망에 비해 90% 증가된 필터링 성능을 나타냄을 확인하였다.


Keywords: 커피찌꺼기(Coffee ground), 복합재료(Composite materials), 방충망(Insect screen), 접착제(Glue), 미세먼지(Fine dust)

This Article

Correspondence to

  • Mantae Kim***, Dong-Jun Kwon*,**

  • * Department of Polymer Science and Engineering, Gyeongsang National University
    ** Department of Materials Science and Convergence Technology, Research Research Institute for Green Energy Convergence Technology, Gyeongsang National University
    *** Aerospace Convergence Materials Center, Korea Institute of Ceramic Engineering and Technology

  • E-mail: ginggiscan@kicet.re.kr, djkwon@gnu.ac.kr