Bioremediation In Situ of an Alkaline Soil Polluted with Heavy Metals

Abstract:

Article Preview

An experimental plot consisting of alkaline soil heavily polluted with heavy metals (copper, zinc, cadmium) was treated in situ by stimulating the activity of the indigenous soil microflora, which contained different metal-solubilizing microorganisms. This was achieved by adding to the soil solid biodegradable organic substrates (cow manure, plant compost, straw), zeolite saturated with ammonium phosphate and aqueous solution containing acetate, lactate and magnesium chloride. An efficient removal of the above-mentioned heavy metals was achieved via the drainage water and their residual contents in the soil decreased to below the relevant permissible levels within 18 months of treatment. The metals were solubilized mainly as complexes with the organic acids added by the irrigating water solutions or secreted by the indigenous heterotrophic microorganisms. The effluents containing dissolved metals were efficiently treated by means of a wetland constructed near to the experimental plot.

Info:

Periodical:

Advanced Materials Research (Volumes 20-21)

Edited by:

Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher

Pages:

287-290

Citation:

V.I. Groudeva et al., "Bioremediation In Situ of an Alkaline Soil Polluted with Heavy Metals", Advanced Materials Research, Vols. 20-21, pp. 287-290, 2007

Online since:

July 2007

Export:

Price:

$38.00

[1] G.I. Karavaiko. G. Rossi, A.D. Agate, S. N. Groudev and Z. A. Avakyan. Eds: Biogeotechnology of Metals, Manual, GKNT International Project, Moscow, (1988).

[2] S. N. Groudev: Microbial Transformation of Mineral Raw Materials. DSc thesis, University of Mining and Geology, Sofia (1990).

[3] US Environmental Protection Agency: Description and Sampling of Contaminated Soils, A field pocket guide EPS 625/12-91/220 Technology Transfer, Cincinnati Ohio Center for Environmental Research Information, US EPA (1991).

[4] A. A. Sobek, W. A. Schuller, J. R. Freeman and R.M. Smith: Field and Laboratory Methods Applicable to Overburden and Mine Soils, US EPA report 600/2-78-054, Cincinnati, Ohio (1978).

[5] A. Tessier, P.G. C. Campbell and M. Bison: Analytical Chemistry, 51(7) (1979, p.844.

[6] J.P. Harley and L.M. Prescott: Laboratory Exercises in Microbiology. 4th ed., McGraw-Hill, Boston (1999).

[7] V.I. Groudeva and V. I. Tzeneva, in: Vocational Training in Biotechnology and environmental Protection, Module II- Environmental Protection and Biotechnology, edited by A. Kujumdzieva, National Bank of Industrial Microorganisms and Cell Cultures, Sofia (2001).

Fetching data from Crossref.
This may take some time to load.