Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Removal of Bacteriophage T7 from Artificial groundwater by Layered Double Hydroxide

층상이중수산화물에 의한 인공지하수내의 박테리오파지 T7 제거

  • Park, Jeong-Ann (Environmental Biocolloid Engineering Laboratory, Seoul National University) ;
  • Lee, Chang-Gu (Environmental Biocolloid Engineering Laboratory, Seoul National University) ;
  • Kang, Jin-Kyu (Environmental Biocolloid Engineering Laboratory, Seoul National University) ;
  • Kim, Song-Bae (Department of Rural Systems Engineering.Research Institute for Agriculture and Life Sciences, Seoul National University)
  • 박정안 (서울대학교 환경바이오콜로이드공학연구실) ;
  • 이창구 (서울대학교 환경바이오콜로이드공학연구실) ;
  • 강진규 (서울대학교 환경바이오콜로이드공학연구실) ;
  • 김성배 (서울대학교 지역시스템공학과.농업생명과학연구원)
  • Received : 2011.04.12
  • Accepted : 2011.06.26
  • Published : 2011.06.30
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Abstract

The objective of this study was to investigate the virus removal from artificial groundwater using Mg-Fe layered double hydroxide (LDH). Batch experiments were conducted under various experimental conditions to examine bacteriophage T7 removal with Mg-Fe LDH. Results showed that the removal of T7 by Mg-Fe LDH was a fast process, reaching equilibrium within 2~3 hrs. Mg-Fe LDH had the virus removal capacity of $1.57{\times}10^8pfu/g$ with a removal percent of 96%. Results also showed that the effect of solution pH on T7 removal was minimal between pH 6.2 and 9.1. The influence of anions ($SO_4^{2-}$, $CO_3^{2-}$, $HPO_4^{2-}$) on T7 removal was significant due to their competition with bacteriophage at the sorption sites on LDH, while the effect of $NO_3^-$ was negligible. This study demonstrated that Mg-Fe LDH could be applied as adsorbents for virus removal in water treatment.

본 연구의 목적은 마그네슘-철 층상이중수산화물(Mg-Fe LDH)을 이용하여 인공 지하수에서 바이러스를 제거하는 것이다. Mg-Fe LDH를 이용한 박테리오파지 T7의 제거를 관찰하기 위하여 다양한 실험조건에서 회분실험을 실시하였다. 실험 결과, Mg-Fe LDH에 의한 T7 제거는 빠른 반응으로써, 2~3시간 안에 평형에 도달하였다. Mg-Fe LDH의 T7 제거능은 $1.57{\times}10^8pfu/g$이었고, 제거율은 96%이었다. 또한, pH 6.2~9.1 범위에서 용액 pH가 T7 제거에 미치는 영향은 미미하였다. 음이온들($SO_4^{2-}$, $CO_3^{2-}$, $HPO_4^{2-}$)이 T7 제거에 미치는 영향은 중요하였는데, 이유는 이들 음이온들이 LDH상의 흡착지점에 T7과 경쟁하기 때문이다. 반면, 질산염($NO_3^-$)이 T7 제거에 미치는 영향은 미미하였다. 본 연구에 의하면, Mg-Fe LDH는 흡착제로써 수처리 과정에서 바이러스제거에 적용될 수 있을 것으로 판단된다.

Keywords

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