Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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The method for total organic carbon analysis employing TiO2 photocatalyst

이산화티타늄 광촉매를 이용한 총유기탄소 분석방법

  • Park, Buem Keun (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Sung Mi (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Lee, Young-Jin (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Paik, Jong-Hoo (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Shin, Jeong Hee (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology)
  • 박범근 (한국세라믹기술원 전자융합본부) ;
  • 김성미 (한국세라믹기술원 전자융합본부) ;
  • 이영진 (한국세라믹기술원 전자융합본부) ;
  • 백종후 (한국세라믹기술원 전자융합본부) ;
  • 신정희 (한국세라믹기술원 전자융합본부)
  • Received : 2021.09.03
  • Accepted : 2021.09.15
  • Published : 2021.09.30
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Abstract

Biochemical oxygen demand (BOD) and chemical oxygen demand (COD) methods are conventional analytical methods to analyze water quality. Both of these methods are technically indirect measurement methods, require complicated preconditions, and are time-consuming. On the other hand, the total organic carbon (TOC) method is a direct and fast measurement method which is more intuitive and accurate than the BOD and COD methods. However, general TOC analysis methods involve complicated processes and high power consumption owing to the process of phase transition from liquid to gas by a high-temperature heater. Furthermore, periodic consumables are also required for the removal of inorganic carbon (IC). Titanium dioxide (TiO2) is one of the most suitable photocatalysts for simple processes. Its usage involves low power consumption because it only reacts with the organic carbon (OC) without the requirement of any other reagents and extra processes. We investigated a TiO2 photocatalyst-based TOC analysis for simple and affordable products. TiO2-coated fiber substrate maintained under carbon included water was exposed to ultraviolet (UV) radiation of wavelength 365 nm. This method is suitable for the real-time monitoring of water pollution because of its fast reaction time. Its linear property is also sufficient to match the real value.

Keywords

Acknowledgement

본 연구는 2020년도 환경부 환경기술개발사업 '상하수도 혁신기술개발사업(No. RE202001418)'의지원을받아수행되었다.

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