Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
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Nitrate Nitrogen Reduction Technology for Safe Groundwater Drinking

지하수의 안전한 음용을 위한 흡착기반 질산성질소 저감화 기술

  • Choi, Kyeong-Ok (Department of Food Science and Technology, Sejong University) ;
  • Seo, Seok Jin (Department of Food Science and Technology, Sejong University) ;
  • Ko, Sanghoon (Department of Food Science and Technology, Sejong University)
  • Received : 2013.11.08
  • Accepted : 2014.01.23
  • Published : 2014.02.28
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Abstract

Excessive nitrate content in drinking groundwater is one of the sources of nitrate-nitrogen that threatens human health all over the world. Nitrate-nitrogen reduction technology is categorized into membrane filtration, electro-dialysis, ion exchange, adsorption, chemical methods, and biological methods according to the principle of elimination from water. In particular, an adsorption technique is the most popular and common process because of its cost effectiveness, convenience, and effective adsorption. In this review, the application of conventional adsorbents used to reduce nitrate-nitrogen from drinking water is discussed and novel technologies on nitrate-nitrogen removal are introduced. Furthermore, the recent development of novel nitrate-nitrogen adsorbents from biopolymers such as chitosan and agricultural and industrial byproducts is reviewed.

본 논문에서는 음용수 내 질산성질소 저감화 기술에 대해 간략히 소개하였으며 그 중 흡착기술을 이용한 질산성질소 저감화 기술에 대해 세부적으로 논의하였다. 또한, 기존 흡착소재의 개질 및 새로운 소재 개발을 통한 질산성질소 제거효율 향상 기술을 간략하게 소개하였다. 본문에서 살펴본 바와 같이 질산성질소 저감화 기술은 제거원리에 따라서 크게 몇 가지로 분류할 수 있으나, 본문에서 언급되지 않은 새로운 기술이 지속적으로 연구 또는 개발되고있다. 흡착소재는 가격, 설치 및 유지비가 상대적으로 저렴하고, 설치 및 조작이 간편하며, 정수 규모에 상관없이 쉽게 적용할 수 있기 때문에 수처리 산업에서 가장 널리 이용되고 있다. 활성탄과 같은 탄소소재, 제올라이트나 점토와 같은 실리케이트는 다양한 물질에 대한 흡착력을 보이며 표면개질을 통한 특정 오염원의 제거 향상률이 높기 때문에 오래 전부터 흡착소재로 가장 널리 연구되어 왔으며, 최근에는 키토산과 같은 생체고분자 물질이나 농업 및 산업 폐기물을 재활용한 새로운 소재 개발이 활발히 진행되고 있다. 음용수의 오염 및 소비자들의 물에 대한 불신이 커져가고 있는 시점에서 현재 연구되고 있는 새로운 흡착소재의 개발 및 저렴하고 제거효율이 뛰어난 흡착소재의 개발은 안전한 음용수의 공급을 가능케 하여 국민 건강에 이바지 할 것이다.

Keywords

Acknowledgement

Supported by : 환경부

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