Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Development of Filtering Sets Composed of Lignocellulosic Fiber-based 3-layers Fiberboard and Traditional Korean Paper for the Purification of Indoor and Outdoor Air Pollutants

리그노셀룰로오스 섬유-기반 3층 섬유판과 한지로 구성된 실내외 대기 오염물질 정화용 필터세트의 개발

  • Young-kyu Lee (The National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Yeong Seo Choi (Institutes of Green Bio Science & Technology, Seoul National University) ;
  • Myoung cheol Moon (Happyhomewoodtech Co. Ltd.) ;
  • Jae min So (Happyhomewoodtech Co. Ltd.) ;
  • Ohkyung Kwon (The National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Wonsil Choi (The National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Joon weon Choi (Institutes of Green Bio Science & Technology, Seoul National University) ;
  • In Yang (Institutes of Green Bio Science & Technology, Seoul National University)
  • 이영규 (서울대학교 농생명과학공동기기원) ;
  • 최영서 (서울대학교 그린바이오과학기술연구원) ;
  • 문명철 ((주) 행복홈우드테크, 경영지원부) ;
  • 소재민 ((주) 행복홈우드테크, 경영지원부) ;
  • 권오경 (서울대학교 농생명과학공동기기원) ;
  • 최원실 (서울대학교 농생명과학공동기기원) ;
  • 최준원 (서울대학교 그린바이오과학기술연구원) ;
  • 양인 (서울대학교 그린바이오과학기술연구원)
  • Received : 2023.11.09
  • Accepted : 2024.01.17
  • Published : 2024.02.01
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Abstract

This study was conducted to investigate the efficiency of the filtering sets composed of fiberboards, which were fabricated with lignocellulosic fiber and cork oak bark-based activated carbon (COA), as well as traditional Korean paper handmade from mulberry trees (KP) for the filtration of PM, TVOC and HCHO. Three-layers fiberboards (WRF) were fabricated with wood fiber in its surface layers and recycled fiber/COA in its core layer using a protein-based adhesive with the resin content of 8%. Filtering sets were composed of three WRF and one sheet of KP. Concentrations of PM, TVOC and HCHO generated with the combustion of a incense in a sealed laboratory hood were reduced efficiently with the operation of air-purifier installed the filtering sets. Except for the WRF fabricated with 4%/4% resin contents, other WRF were prepared with 5%/3% and 6%/2% resin contents in surface/core layers, and then the WRF were used with KP for the fabrication of filtering sets. Filtration efficiency of the filtering sets was improved as the core-layer resin content applied in the fabrication of WRF decreased. In addition, filtration efficiency of the WRF-based filtering set fabricated with KP of 25 g/m2 basis weight was higher than that with KP of 45 g/m2 basis weight. Filtering sets composed of three-layers fiberboards (RWF) that recycled fiber and wood fiber/COA were used in its surface and core layers, respectively, and KP-25g showed higher filtration efficiency than those of WRF-based filtering sets. Air-inhalation equipment installed the RWF-based, WRF-based filtering sets and without filtering set were operated in small indoor and large outdoor spaces. Efficiency for filtering PM and TVOC of the RWF-based filtering sets was higher than that of other filtering sets. It is concluded that fiberboard-based filtering sets composed of RWF and KP-25g can be used as a filter for reducing the concentrations of PM and TVOC existed in indoor and outdoor spaces.

본 연구는 리그노셀룰로오스 섬유와 굴참나무 수피-기반 활성탄(COA)으로 제조한 3층 섬유판에 한지를 조합하여 제작한 섬유판 필터세트의 미세먼지(PM), 휘발성 유기화합물(TVOC), 폼알데하이드(HCHO) 여과능을 조사하기 위하여 수행하였다. 단백질계 접착제를 적용하여 표층에 목섬유 그리고 심층에 재생섬유/COA로 제조한 섬유판(WRF)과 한지로 제작한 섬유판 필터세트는 일반향의 연소에 의하여 발생하는 상기 오염물질을 효과적으로 여과하였다. 섬유판 제조에 있어 표층/심층에 적용되는 접착제의 함지율을 4%/4%, 5%/3%, 6%/2%로 조절하여 WRF를 제조한 후, 이를 한지와 함께 WRF-기반 필터세트 제작에 이용하였다. 이 필터세트의 PM, TVOC, HCHO 여과능은 심층의 함지율이 감소함에 따라 향상되었다. 한편 WRF-기반 필터세트 구성에 있어 45 g/m2 평량의 한지보다 25 g/m2 평량의 한지(KP-25g)를 사용하여 제작한 필터세트에서 여과능이 우수하였다. 표층에 재생섬유와 심층에 목섬유/COA로 제조한 섬유판(RWF)과 KP-25g로 구성한 섬유판 필터세트의 여과능은 WRF와 비교하여 높았다. 소형 실내공간 및 대형 옥외공간에 WRF-기반 섬유판 필터세트 및 무필터 조건과 함께 측정한 PM 및 TVOC 여과능은 RWF-기반 섬유판 필터세트에서 높았다. 따라서 RWF와 KP-25g를 조합하여 제작한 섬유판 필터세트가 실내외 공간에 존재하는 PM, TVOC 여과용 필터로서 적용이 가능할 것으로 생각한다.

Keywords

Acknowledgement

본 연구는 산림청의 "산림과학기술 실용화 지원사업의 산림과학기술 우수연구성과 후속 기술개발" 지원사업에 의하여 수행되고 있습니다(2023504A00-2323-AB01). 섬유판 제조에 있어 목섬유 및 왁스를 제공하여 주신 (주) 유니드의 박진학과장님을 포함한 임직원님들과 돈모 및 돈혈을 제공하여 주신 전북 김제시 소재 목우촌의 임직원분들에게 감사드립니다.

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