Stabilization of CCA-contaminated soil with iron products - a field experiment
DOI:
https://doi.org/10.15626/Eco-Tech.2005.040Keywords:
Metallic iron; Stabilization; Arsenic; Copper; ChromiumAbstract
Chemical stabilization of metals is lately considered as a possible pretreatment for soil
contaminated with average levels of trace elements. The element mobility in soil can be
altered by adding soil amendments that can adsorb, complex, or co-precipitate trace elements.
As a consequence, pollutant spreading from the contaminated soil and effect on the recipient
can be reduced. The different contaminants originating from wood impregnation chemicals,
e.g. Cu, Cr, and As limit the choice of amendments because e.g. large pH fluctuations and
consequent mobilization of Cu or As should be avoided. The results show that the leaching of
arsenic is lowest in the lysimeter with 15% Fe3O4. In both lysimeters with untreated soil and
with 1 % Fe 0, the arsenic leaching seems to decrease with the sampling depth. The leaching of
copper is generally low. Further the addition of iron seems to increase the leaching of
manganese and nickel but to reduce the leaching of zinc. Results from the laboratory
experiment show that the arsenic content in the leachate is lowest with the highest mixture of
magnetite. Mixing is one of the key issues when discussing the treatment efficiency and
possible use of the treated soil. The results so far indicate that magnetite can be used for
treatment of CCA contaminated soil also at a large scale. Reduction of both arsenic and
copper using a single amendment is challenging as they behave opposite. Magnetite seems to
be a promising amendment even though a high amount of amendment needs to be added.
Moreover, the potential establishment of reducing conditions at larger depths in the soil is of
concern since this might lead to a rapid increase in arsenic leaching
Metrics
References
Kumpiene, J,, Ore. S,, Renella. G., Mench, M., Lagerkvist, A, Maurice C. Assessment of zerovalent iron for stabilisation of Cr, Cu, As in soil, Environmental Pollution Accepted.
Kumpiene, J,, Role of soil organic matter in the immobilization of metals - Treatment of leachate from MSW! bottom ash, Licentiate Thesis 2003:62. Luleå University of Technology, Sweden,
Montesinos Isaac Castillo, 2005. Stability assessment of iron treated CCA contaminated soil. Master Thesis 2005:096 Luleå University of Technology, Luleå, Sweden.
Lundberg Eleonor, 2004. Stabilisation of CCA-contaminated soil: assessment of amendments for immobilization of chromate cupper arsenate (CCA). Master Thesis 2004: 303, Luleå University of Technology, Luleå, Sweden.
Jain, A., Raven, K.P., Loeppert, R.H .. 1999 . Arsenite and arsenate adsorption on ferrihydrite: surface charge reduction and net Off release stoichiometry. Environ. Sci. Technol. 33, 1179-1184 https://doi.org/10.1021/es980722e
Mench, M., Vangronsveld, J., C!ijsters, H., Lepp, N.W., Edwards, R., 2000. In situ metal immobilisation and phytostabilisation of contaminated soils. In: Norman, T., Banuelos, G .. Phytoremediation of contaminated soil and water. Lewis Publishers, Boca Raton, FL, p. 389.
Mench, M. Bussiere, S., Soisson, J., Castaing, E., Vangronsveld, J., Ruttents, A., De Koe, T., Bleeker, P., Assuncao, A., Manceau, A., 2003. Progress in remediation and revegetation of the barren Jales gold mine spoil after in situ treatment. Plant and soil 249, 187-202. https://doi.org/10.1023/A:1022566431272
Warren, G.P., Alloway, B J., Lepp, N.W., Singh, B., Bochereau, F.J.M., Penny. C., 2003. Field trials to assess the uptake of arsenic by vegetables from contaminated soils and soil remediation with iron oxides. The Science of the Tora/ Environment 311, 19-33. https://doi.org/10.1016/S0048-9697(03)00096-2
Warren, G.P., Alloway, B J., 2003. Reduction of arsenic uptake by lettuce with ferrous sulfate applied to contaminated soil. Journal of Environmenra/ Qualify 32(3 ), 767-772. https://doi.org/10.2134/jeq2003.7670
J Lavkulich, L.M., 1981. Exchangeable cations and total exchangeable capacity by the ammonium acetate method at pH 7.0. In: Carter, M.R. (Ed) 1993. Soil sampling and methods of analysis. Lewis Publishers, Boca Raton, FL, p. 823.
Luthbom K., Uncertainty in environmental decision-making - effects of defined or undefined guidance in the decision process. Licentiate Thesis 2004:64, Luleå University of Technology, Sweden.
Pitard, F.F., I 993. Pierre Gy 's sampling theory and sampling practice: heterogeneity, sampling correctness, and statistical process control, CRC Press, Boca Raton, p. 488.
Gustavsson Björn, Estimating and reducing errors in soil sampling. Licentiate Thesis 2004:47, Luleå University of Technology, Sweden
Lidelow S., 2004. Environmental assessment of secondary construction material. Licentiate Thesis 2004:65, Luleå University of Technology, Sweden
Hartley, W., Edwards, R., Lepp, N.W., 2004. Arsenic and heavy metal mobility in iron oxide-amended contaminated soils as evaluated by short- and long-term leaching tests. Environmental Pollution 131, 495-504. https://doi.org/10.1016/j.envpol.2004.02.017
Maurice, C., 2001. Bioindication and bioremediation of landfill emissions. Doctoral Thesis. Division of Waste Science and technology, Department of Environmental Engineering, Luleå University of Technology, Luleå, Sweden.
Maurice, C., Lagerkvist, A., 2000. Using Betula pendula and Telephora caryophyllea for soil Pollution Assessment. Journal of Soil Conramination 9 (1), 31-50. https://doi.org/10.1080/10588330091134185
Downloads
Published
Issue
Section
