Environmental Engineering Research

Korean Society of Environmental Engineers (대한환경공학회)
권호 표지
DOI QR코드

DOI QR Code

WASTE LEAVES AS REACTIVE MEDIA IN PERMEABLE REACTIVE BARRIERS FOR CR(VI) REMOVAL

  • Published : 2005.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

Hexavalent chromium in aqueous solutions was successfully removed via sorption and reduction in the presence of waste leaves. Cr(VI) removal followed a first-order reaction, and removal rates were proportional to the amount of waste leaves used in the tests. Most of Cr(VI) were removed via sorption in early stages of the tests, but the reduction reaction played a significant role in Cr(VI) removal later. Solution pHs were continuously decreased due to the microbial activity, which was induced from the microorganisms attached on waste leaves. The decreased solution pHs further enhanced the sorption and reduction of Cr(VI). To characterize the microorganisms found in the tests, a denaturing gradient gel electrophoresis (DGGE) method was used. The majority of microorganisms were composed of Bacillus sp. which can reduce Cr(VI). Thus, waste leaves can be effective reactive media for the treatment of Cr(VI) in the subsurface.

Keywords

References

  1. Arnold, W. and Roberts, A., 'Pathways of chlorinated ethene and chlorinated acetylene reaction with Zn(0),' Environ. Sci. Technol., 32(19), 3017-3025 (1998) https://doi.org/10.1021/es980252o
  2. Blowes, D., Ptacek, C., Cherry, J., Gillham, R., and Robertson, W., 'Passive remediation of groundwater using In situ treatment curtains,' Geoenvironment 2000: Characterization, Containment, Remediation, and Performance in Environmental Geotechnics (2), Daniel, D. and Acar, Y. (Eds.), ASCE, GSP 46, 1588-1607 (1995)
  3. Roberts, A., Totten, L., Arnold, W., Burris, D., and Campbell, T., 'Reductive elimination of chlorinated ethylenes by zero-valent metals,' Environ. Sci. Technol., 30(8), 2654-2659 (1996) https://doi.org/10.1021/es9509644
  4. Benner, S., Blowes, D., and Ptacek, C., 'A full-scale porous reactive wall for prevention of acid mine drainage,' Ground Water Monitoring and Remediation, 17(3), 99-107 (1997) https://doi.org/10.1111/j.1745-6592.1997.tb01269.x
  5. Francis, A. and Dodge, C., 'Remediation of soils and wastes contaminated with uranium and toxic metals,' Environ. Sci. Technol., 32(24), 3923-3998 (1998)
  6. Shokes, T. and Moller, G., 'Removal of dissolved heavy metals from acid rock drainage using iron metal,' Environ. Sci. Technol., 33(2), 282-287 (1999) https://doi.org/10.1021/es980543x
  7. Su, C. and Puis, R., 'Arsenate and Arsenite removal by zero-valent iron: kinetics, redox transformation, and implications for in situ groundwater remediation,' Environ. Sci. Technol., 35(7), 1487-1492 (2001) https://doi.org/10.1021/es001607i
  8. Eykholt, G. and Davenport, D., 'Dechlorination of the chloroacetanilide herbicides alachlor and metolachlor by iron metal,' Environ. Sci. Technol., 32(10), 1482-1487 (1998) https://doi.org/10.1021/es970678n
  9. Koppensteiner, B., 'The degradation of the herbicides alachlor and metolachlor by iron metal in water and soil systems,' MS. Thesis, Dept. of Civil and Environmental Engineering, University of Wisconsin-Madison (1998)
  10. Bailey, S., Olin, T., Bricka, M., and Adrian, D., 'A review of potentially low-cost sorbents for heavy metals,' Water Res., 33(11), 2469-2479 (1999) https://doi.org/10.1016/S0043-1354(98)00475-8
  11. Kim, J., 'Retardation of volatile organic compound movement in landfills using scraptires,' Ph.D Dissertation, Department of Civil and Environmental Engineering, University of Wisconsin-Madison (1996)
  12. Daneshvar, N., Salari, D., and Aber, S., 'Chromium adsorption and Cr(VI) reduction to trivalent chromium in aqueous solutions by soya cake,' J. Hazard Mater., B94, 49-61 (2002)
  13. Wang, Y. and Xiao, C., 'Factors affecting hexavalent chromium reduction in pure cultures of bacteria,' Water Res., 29(11), 2467-2474 (1995) https://doi.org/10.1016/0043-1354(95)00093-Z
  14. Giuseppe, C., Amedeo, P., and Giovanni, T.,' Removal of toxic cations and Cr(VI) from aqueous solution by hazelnut shell,' Water Res., 34(11), 2955-2962 (2000) https://doi.org/10.1016/S0043-1354(00)00048-8