한국지반신소재학회논문집 (Journal of the Korean Geosynthetics Society)

  • 제16권1호
  • /
  • Pages.31-39
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  • 2017
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  • 2508-2876(pISSN)
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  • 2287-9528(eISSN)
한국지반신소재학회 (Korean Geosynthetics Society)
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나노버블수에 의한 구리 오염 토양의 정화에 관한 기초 연구

The Fundamental Study on th e Soil Remediation for Copper Contaminated Soil using Nanobubble Water

  • Jeong, So-Hee (Department of Civil Engineering, Chung-ang Univ.) ;
  • Kim, Dong-Chan (Department of Civil Engineering, Chung-ang Univ.) ;
  • Han, Jung-Geun (School of Civil and Environmental Engineering, Urban Design and Study, Chung-Ang Univ.)
  • 투고 : 2016.12.21
  • 심사 : 2017.03.06
  • 발행 : 2017.03.30
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초록

본 연구에서는 중금속 오염지반을 정화하기 위한 향상제로 친환경 재료인 나노버블수를 적용하기 위한 기초 연구를 수행하였다. 수소 나노버블을 제조하여 입도분석과 제타 포텐셜 측정을 통해 장기 생존성을 평가하였다. 제조된 나노버블수를 회분식 탈착실험에 적용하여 구리 오염토양에 대한 나노버블수의 정화 효과를 증류수와 비교하여 분석하였다. 가압용해식 나노버블 제조 장치를 통해 제조한 나노버블은 최소 14일간 존재함을 알 수 있었다. 또한 구리 오염 토양에 대한 회분식 탈착실험을 수행한 결과, 토양 종류에 관계없이 나노버블수의 제거효율은 전반적으로 증류수보다 높았으며 고액비와 반응시간에 비례하여 증가하였다. pH 변화에 따라 사질토는 산성 측에서 제거 효율이 높게 나타났으나 점성토는 그 차이가 다소 낮았다. 실험 결과를 통해 나노버블의 구리 탈착 효과는 나노버블의 큰 비표면적과 제타 포텐셜에 기인하여 전반적으로 우수하게 나타난 것으로 판단된다. 따라서 본 연구를 바탕으로 나노버블수의 중금속 제거 효과를 확인하였으며 이를 토양정화의 향상제로 적용하여 친환경적인 정화공법으로 활용될 수 있을 것으로 기대된다.

The fundamental study for an application of nanobubble as a soil remediation enhancer on heavy metal contaminated soil was carried out. The existence and long-term stability of hydrogen nanobubbles were investigated by particle analysis and zeta-potential analysis. And the removal efficiency of copper using nanobubble water(NBW) and distilled water(DW) were compared and analyzed through a batch desorption test. As a result, it is confirmed that nanobubble which was fabricated by compression-dissolution type generator can exist for more than 14 days. The results of batch test show that copper removal of NBW was higher than that of DW irrespectively to soil type and increased as solid-liquid ratio and contact time increased, respectively. According to the pH change, the removal of copper on sand was higher on the acid side but the removal difference was slightly lower on the clay. It is considered that a high efficiency of NBW in copper removal is due to the large surface area and high zeta-potential of nanobubbles. Therefore, the nanobubble can be applied to soil remediation for heavy-metal contaminated soil as an eco-friendly enhancer.

키워드

참고문헌

  1. Agarwal, A., Ng, W. J. and Liu, Y. (2011), Principle and applications of microbubble and nanobubble technology for water treatment, Chemosphere, Vol.84, Issue.9, pp.1175-1180. https://doi.org/10.1016/j.chemosphere.2011.05.054
  2. Cho, S. H., Kim, J. Y., Chun, J. H. and Kim, J. D. (2005), Ultrasonic formation of nanobubbles and their zeta-potentials in aqueous electrolyte and surfactant solutions, Colloids and Surfaces A: Physicochem. Eng. Aspects, Vol.269, pp.28-34. https://doi.org/10.1016/j.colsurfa.2005.06.063
  3. Choi, H. E. (2011), A Study on the Treatment of Heavy Metal and Oil Contaminated Soils with Micro-nano Bubbles Soil Washing System, Graduated Thesis, University of Dong-A.
  4. Hur, J. H. and Jeong, S. W. (2011), Effect of Water- Thoroughly-Rinsing in the Artificially Metal-Contaminated Soil Preparation on Final Soil Metal Concentrations, Journal of KSEE, Vol.33, No.9, pp.670-676.
  5. Irie, A. (2014), Particle size distribution of nanobubbles by Nanosight system, Micro- and Nanobubbles: Fundamentals and applications, Pan Stanford Publishing, pp.68-74.
  6. Jang, J. W. (2012), A Study on Micronanobubble Washing Efficiency in Lead(Pb)-Contaminated Soil, Graduated Thesis, University of Seoul.
  7. Jang, N. Y. (2010), A Study on the Treatment of Zn, Ni Contaminated Soils with Micro-nano Bubbles Acid Washing System, Graduated Thesis, University of Dong-A.
  8. Jeon, C. (2013), Review for Remediation Techniques of Contaminated Soil with Heavy Metals, Journal of KORRA, Vol.21, No.3, pp.21-31.
  9. Kim, Y. W., Lee, J. Y., Lee, Y. K. and Han, J. G. (2009), A Study on Heavy Metals sedimentation by pH, KSCE Conference, pp.2037-2040.
  10. Kikuchi, K., Ioka, A., Oku, T., Tanaka, Y., Saihara, Y. and Ogumi, Z. (2009), Concentration Determination of Oxygen Nanobubbles in Electrolyzed Water, Journal of Colloid and Interface Science, Vol.329, pp.306-309. https://doi.org/10.1016/j.jcis.2008.10.009
  11. Kukizaki, M. and Goto, M. (2006), Size Control of Nanobubbles Generated from Shirasu-porous-glass (SPG) Membranes, Journal of Membrane Science, Vol. 281, Issues 1-2, pp.386-396. https://doi.org/10.1016/j.memsci.2006.04.007
  12. Li, H., Hu, L. and Xia, Z. (2013), Impact of Groundwater Salinity on Bioremediation Enhanced by Micro-Nano Bubbles, Materials, Vol.6, pp.3676-3687. https://doi.org/10.3390/ma6093676
  13. Ministry of Environment (2016), 2016 White Paper of Environment, Ministry of Environment.
  14. Ohgaki, K., Khanh, N. Q., Joden, Y., Tsuji, A. and Nakagawa, T. (2010), Physicochemical approach to nanobubble solutions, Chemical Engineering Science, Vol.65, pp.1296-1300. https://doi.org/10.1016/j.ces.2009.10.003
  15. Takahashi, M. (2005), ${\zeta}$ Potential of Microbubbles in Aqueous Solutions: Electrical Properties of the Gas-Water Interface, J. Phys. Chem., 109, pp.21858-21864. https://doi.org/10.1021/jp0445270
  16. Ushikubo, F. Y., Furukawa, T., Nakagawa, R., Enari, M., Makino, Y., Kawagoe, Y., Shiina, T. and Oshita, S. (2010), Evidence of the existence and the stability of nano-bubbles in water, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol.361, pp.31-37.
  17. Yang, J. W. and Lee, Y. J. (2007), Status of Soil Remediation and Technology Development in Korea, Korean Chemical Engineering Research, Vol.45, No.4, pp.311-318.

피인용 문헌

  1. Physiochemical Characteristics of Panax ginseng C. A Meyer Sprout Cultivated with Nanobubble Water and Antioxidant Activities of Enzymatic Hydrolysates vol.52, pp.4, 2018, https://doi.org/10.14397/jals.2018.52.4.109
  2. 국내 해성점토 지반에 대한 선행압밀압력 평가방법의 적용성 vol.16, pp.4, 2017, https://doi.org/10.12814/jkgss.2017.16.4.093
  3. Remediation of Copper Contaminated Soils Using Water Containing Hydrogen Nanobubbles vol.10, pp.6, 2017, https://doi.org/10.3390/app10062185
  4. Mechanical Strength and Hydration Characteristics of Cement Mixture with Highly Concentrated Hydrogen Nanobubble Water vol.14, pp.11, 2017, https://doi.org/10.3390/ma14112735