Ecology and Resilient Infrastructure

Korean Society of Ecology and Infrastructure Engineering (응용생태공학회)
권호 표지
DOI QR코드

DOI QR Code

Behavior Characteristics of Fluoride with pH, Ion Type and Concentration, and Sediment Characteristics in River

pH, 이온종류 및 농도, 퇴적물의 성분에 따른 하천 내 불소의 거동특성

  • LEE, Dong Min (Department of Applied Environmental Science, Kyung Hee University) ;
  • Joo, Kwang Jin (Department of Applied Environmental Science, Kyung Hee University) ;
  • Choi, ISong (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Chang, Kwang Hyeon (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Oh, Jong Min (Department of Environmental Science and Engineering, Kyung Hee University)
  • 이동민 (경희대학교 환경응용과학과) ;
  • 주광진 (경희대학교 환경응용과학과) ;
  • 최이송 (경희대학교 환경학 및 환경공학과) ;
  • 장광현 (경희대학교 환경학 및 환경공학과) ;
  • 오종민 (경희대학교 환경학 및 환경공학과)
  • Received : 2018.01.15
  • Accepted : 2018.02.05
  • Published : 2018.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

Water quality is affected by the pollutants flowing into rivers since the interaction between water bodies and sediments in various environmental conditions. Especially, accumulation of sediments increases in the stagnant water areas due to a relative long hydrological retention time in the water bodies. Therefore, it is an important factor of water quality to understand characterization of the material behavior in water bodies and sediments. In this study, the objective of the conditional experiments was small and medium sized streams located in Gyeonggi-do. To estimate how the changes of fluoride behavior, depending on the pH, ion type, concentration, and clay contents. The pH results showed a trend that adsorption amount of fluorine decreased and the dissolution of fluorine increased following by pH increasing. The concentration and type of ions results showed that $Cl^-$ and $SO{_4}^{2-}$ ions had no significant effect on the adsorption ability of fluorine, the amount of dissolution was increased because $OH^-$ ion had active competition with fluorine in the reaction. The ingredient of sediment results showed that the amounts of fluoride adsorption and dissolution were reduced in samples, which contain relatively large amounts of Silt and Clay components. This means that the environmental conditions of water bodies greatly affect the adsorption and dissolution of fluoride in the sediments, so that proper management of fluoride in the sediments must precede an understanding of the environmental conditions of the water bodies.

하천에 유입된 오염물질은 다양한 환경 조건에 의하여 수체 및 퇴적물의 상호작용에 따라 수체의 수질에 영향을 미친다. 특히 최근 수체의 수리학적 체류시간이 상대적으로 긴 정체수역 내에서는 퇴적물의 축적량이 증가하고 있어 퇴적물과 수체 내에서의 물질적 거동특성 파악은 중요한 수질적 관점 요소이다. 본 연구에서는 하천 내 pH, 이온종류 및 농도, 퇴적물의 점토함량에 따라 불소의 거동이 어떻게 변화하는지 검토하기 위하여 경기도에 위치한 중소하천을 대상으로 조건별 실험을 실시하였다. pH에 따른 흡착 및 용출특성 실험결과, pH가 높을수록 불소의 흡착량이 감소하였고, 용출되는 불소량은 증가하는 경향을 나타냈다. 이온농도 및 종류에 따른 흡착 및 용출특성 실험결과, $Cl^-$, $SO{_4}^{2-}$ 이온은 불소의 흡착능에 큰 영향을 주지 않는 것으로 나타났으나, 불소와의 활발한 이온경쟁효과를 지닌 $OH^-$와의 반응에서는 흡착량이 줄고, 용출량이 늘었음을 알 수 있었다. 퇴적물의 성분에 따른 흡착 및 용출특성 실험 결과 상대적으로 입경이 작은 Silt와 Clay 성분이 많이 포함된 시료에서 불소의 흡착량이 많고 용출되는 불소량이 줄어드는 것을 알 수 있었다. 이는 수체의 환경조건이 퇴적물 내 불소의 흡착 및 용출에 크게 영향을 미치기 때문에, 퇴적물 내 불소를 적절하게 관리하기 위해서는 수체의 환경조건에 대한 이해가 선행되어야 한다는 것을 의미한다.

Keywords

References

  1. Ahn, J.S., Lee, H.A., Lee, J.S. and Yoon, H.O. 2015. Fluorine distribution in soil in the vicinity of an accidental spillage of hydrofluoric acid in Korea. Chemosphere 199: 588-582.
  2. Ayoob, S. and Gupta. A.K. 2006. Fluoride in drinking water: A review on the status and stress effects, Crit. Rev. Environ. Sci. Technol 35: 433-487.
  3. Bolan, N.S. and Duraisamy, V.P. 2003. Role of inorganic and organic soil amendments on immobilisation and phytoavailability of heavy metals: a review involving specific case studies. Soil Research 41(3): 533-555. https://doi.org/10.1071/SR02122
  4. Choo, C.H., Kim, N.W. and Jeong, G.C. 2008. Geochemical Aspects of Groundwater in Granite Area and Origin of Fluoride with emphasis on Water-Rock Interaction. Journal Engineering Geology 18(1): 103-115.
  5. Gu, B.W., Kang, G. and Park, S.J. 2015. Removal and adsorption characteristics of fluorine in wastewater using waste concrete, Anseong, Korea. (in Korean).
  6. Horowitz, H.S. 2000. Decision-making for national programs of community fluoride use, Commun. Dent. Oral Epidemiol 28(5): 321-329. https://doi.org/10.1034/j.1600-0528.2000.028005321.x
  7. Kaasalainen, M. and Yli-Halla, M. 2003. Use of sequential extraction to assess metal partitioning in soils. Environmental Pollution 126(2): 225-233. https://doi.org/10.1016/S0269-7491(03)00191-X
  8. Kim, C.L. 2017. Effect of particle size sediment on th adsorption of Fluride, Yongin, Korea. (in Korean)
  9. Kim D.H. 2002. A study on the measurement of nutrients release from sediment, Journal of Environmental Science International 11(12): 1333-1337. (in Korean) https://doi.org/10.5322/JES.2002.11.12.1333
  10. Lee, C.H. and Yoo, H.J. 2000. A study on development of sediment sediment environment standards. Korea Environment Institute, Korea. (in Korean)
  11. Lee, I.S., Park, S.G., Shin, C.K., Yoo, J.K., Heo, I.A., Ryu, D.H., Shin, D.S., Hong, K.H. and Park W.C. 1997. Investigation of appeal and river sediments, National Institute for Environmental Studies, Korea. (in Korean)
  12. Lee, Y.S. and Lee, K.S. 2000. A study on release characteristics of sediment and its impacts on water quality in Daechung Dam Reservoir, Korean Society Environmental Impact Assessment 9(2): 99-107. (in Korean)
  13. Moon, J.H., Kim, T.J., Choi, C.H. and Kim, C.K. 2006. Adsorption characteristics of heavy metals by clay minerals, International Journal of the Korean Society of Environmental Engineers 28: 704-712. (in Korean)
  14. Na, K.H. 2015. Fluorine analysis technology in soil, Konetic Report pp. 2015-40. (in Korean)
  15. Xiong, X., Liu, J., He, W., Xia, T., He, P., Chen, X. and Wang, A. 2005. Dose-effect relationship between drinking water fluoride levels and damage to liver and kidney functions in Children, Environ. Res. J. 103: 112-116.