DOI QR코드

DOI QR Code

Chemical and Biological Analyses of Bay Sediment Where Magnesium Oxide Compounds Are Applied

  • Cho, Daechul (Department of Energy & Environmental Engineering, Soonchunhyang University) ;
  • Jiang, Sunny (Department of Civil and Environmental Engineering, University of California) ;
  • Kwon, Sung-Hyun (Department of Marine Environmental Engineering and, Engineering Research Institute, Gyeongsang National University)
  • Received : 2013.12.17
  • Accepted : 2014.01.10
  • Published : 2014.03.30

Abstract

Three magnesium compounds, $MgO_2$, MgO, and $Mg(OH)_2$, which are supposed to supply oxygen continuously, were applied onto contaminated bay sediment and its ecology in order to activate the local microbial flora. Those compounds were found to reduce chemical oxygen demand (COD), total nitrogen (T-N), and total phosphorus (T-P). Magnesium oxide, in particular, reduced COD by 30% and T-N and T-P considerably. All compounds also suppressed the release of pollutants in the order $MgO_2$, MgO, and $Mg(OH)_2$. Analysis of microbial flora showed that the microbial group treated by $MgO_2$ and $Mg(OH)_2$ was predictably stable; meanwhile, that treated by MgO increased the number of species, but decreased the total number of microorganisms.

Keywords

Bioremediation;Magnesium oxide;Magnesium peroxide Marine sediment;Microbial community

Acknowledgement

Supported by : National Research Foundation of Korea

References

  1. Vezzulli L, Pruzzo C, Fabiano M. Response of the bacterial community to in situ bioremediation of organic-rich sediments. Mar. Pollut. Bull. 2004;49:740-751. https://doi.org/10.1016/j.marpolbul.2004.05.010
  2. Morgan P, Watkinson RJ. Factors limiting the supply and efficiency of nutrient and oxygen supplements for the in situ biotreatment of contaminated soil and ground water. Water Res. 1992;26:73-78 https://doi.org/10.1016/0043-1354(92)90113-I
  3. Sherwood HP. Some observations of the viability of sewage bacteria in relation to self-purification of mussels. Proc. Soc. Appl. Bacteriol. 1952;15:21-28. https://doi.org/10.1111/j.1365-2672.1952.tb00004.x
  4. Kao CM, Borden RC. Enhanced aerobic bioremediation of a gasoline-contaminated aquifer by oxygen-releasing barriers. In: Hinchee RE, Alleman BC, Hoeppel RE, Miller RN, eds. Hydrocarbon bioremediation. Boca Raton: Lewis Publishers; 1994. p. 262-266.
  5. Hieltjes AH, Lijklema L. Fractionation of inorganic phosphates in calcareous sediments. J. Environ. Qual. 1980;9:405-407.
  6. Mohan RK, Brown MP, Barnes CR. Design criteria and theoretical basis for capping contaminated marine sediments. Appl. Ocean Res. 2000;22:85-93. https://doi.org/10.1016/S0141-1187(00)00003-1
  7. Barcelona MJ, Xie G. In situ lifetimes and kinetics of a reductive whey barrier and an oxidative ORC barrier in the subsurface. Environ. Sci. Technol. 2001;35:3378-3385. https://doi.org/10.1021/es001637l
  8. Heggie DT, Skyring GW, Orchardo J, Longmore AR, Nicholson GJ, Berelson WM. Denitrification and denitrifying efficiencies in sediments of Port Phillip Bay: direct determinations of biogenic $N_{2}$ and N-metabolite fluxes with implications for water quality. Mar. Freshw. Res. 1999;50:589-596. https://doi.org/10.1071/MF98054
  9. Mysona ES, Hughes WD. Remediation of BTEX in groundwater with LNAPL using oxygen-releasing materials (ORM). In: Alleman BC, Leeson A, eds. In situ bioremediation of petroleum hydrocarbon and other organic compounds. Columbus: Battelle Press; 1999. p. 283-288.

Cited by

  1. Effectiveness of external agents in polluted sedimentary area vol.21, pp.1, 2016, https://doi.org/10.4491/eer.2015.102