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2015 Vol.14, Issue 4 Preview Page
Effect of Nano-Bubble on Removal of Complex Heavy Metals

나노버블이 복합중금속(구리/납) 오염물 제거에 미치는 영향 분석

Yang-Gyu Lee1
,
Jung-Geun Han2
,
Ju-Hyun Choi3
,
Dong-Chan Kim3
,
Seung-Kyong You4
,
Kikwon Hong5*
이 양규1
,
한 중근2
,
최 주현3
,
김 동찬3
,
유 승경4
,
홍 기권5*
1Professor, Department of Civil and Environmental Engineering, Daelim University College
2Professor, School of Civil and Environmental Engineering, Urban Design and Study Chung-Ang Univ.
3Graduate student, Department of civil Engineering, Chung-Ang Univ.
4Professor, Department of Civil Engrg., Myongji College
5Research Professor, School of Civil and Environmental Engineering, Urban Design and Study Chung-Ang Univ.
*교신저자. *Corresponding Author. 
30 December 2015. pp. 139-146
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Abstract

This paper describes a effect of nano-bubble on removal of complex heavy metals, in order to remove pollutants of soil with copper (Cu) and lead (Pb) based on column test. It was conducted column test considering inflow and fine soil contents condition, and then it was analyzed removal effect of nano-bubble on Cu and Cu/Pb. The test result showed that the removal effect of the nano-bubble was higher than that of distilled water regardless of fine soil contents in case of Cu pollutant, and the removal effect of nano-bubble on heavy metals was found to have a significant impact on Pb than Cu in case of Cu/Pb pollutants. It was also analyzed that engineering properties (like a flow path and permeability) of soil due to void ratio has influenced a significant impact the pollutants removal of nano-bubble. The test results determined that nano-bubble can be applied as a flushing agent for priority target pollutant in complex heavy metals.

Keywords
Heavy metal
Nano-bubble
Fine contents
Column test
Pollutants removal

본 연구에서는 매립지역의 지반을 대상으로 구리와 납으로 복합 오염된 지반의 오염원 제거를 위하여, 나노버블을 이용한 컬럼실험을 수행하였으며, 실험결과 바탕으로 나노버블의 정화효율 및 적용된 중금속 오염물 제거에 미치는 영향을 분석하였다. 실험결과, 구리 단일오염물의 경우 세립토 함유량에 관계없이 증류수에 비하여 나노버블이 오염물 제거효과가 높은 것으로 나타났으며, 구리/납 복합오염물의 경우에는 나노버블이 구리보다 납의 제거에 큰 영향을 미치는 것으로 확인되었다. 또한 실험결과를 바탕으로 나노버블 이동경로로 활용되는 지반의 간극비에 기인한 흐름경로 및 투수성 등과 같은 공학적 특성이 오염물 제거효과에 큰 영향을 미치는 것으로 분석되었다. 본 연구를 바탕으로 나노버블은 복합오염지반에서 농도에 기인한 우선제거 대상 오염물에 적합한 세정제로의 적용이 가능할 것으로 판단되었다.

References
1
1.H. J. Song, S. H. Oh, B. S. Yim, J. I. Lee, B. H. Lee, J. M. Kim (2013), “A study on existence and lifespan of O2 nano-bubbles in water”, KESP, Vol, No.10, pp.453-454.
2
2.H. J. Song (2013), A study on the stability and physical properties of Micro- and Nano-bubbles, Graduate Thesis, University of Chung-Ang.
3
3.Ki-Kwon Hong, Jung-Geun Han. Dong-Chan Kim, Ju-Hyun Choi (2015), “Column Test on Removal of Heavy Metal Contaminants using Nano-Bubble”, Geosynthetics Conference Spring 2015, pp.68-71
4
4.J. D. Lee (2013) “Study on the Contamination Characteristics of Pollutants at Various type of Abandoned Metal Mines” Korean society of soil and groundwater environment, Vol.18(3), pp.93-108.
5
5.Ministry of environment. (2013), Environment paper, Ministry of environment.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 14
  • No :4
  • Pages :139-146
  • Received Date : 2015-11-20
  • Revised Date : 2015-12-19
  • Accepted Date : 2015-12-21
  • DOI :https://doi.org/10.12814/jkgss.2015.14.4.139
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