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Biomineralisation of 1,2,4-trichlorobenzene in soils by an adapted microbial population.

Authors :
Schroll, R.
Brahushi, F.
Dörfler, U.
Kühn, S.
Fekete, J.
Munch, J.C.
Source :
Environmental Pollution; Feb2004, Vol. 127 Issue 3, p395, 7p
Publication Year :
2004

Abstract

In laboratory experiments the mineralisation of <superscript>14</superscript>C-labelled 1,2,4-trichlorobenzene (1,2,4-TCB) in soils was studied by direct measurement of the evolved <superscript>14</superscript>CO<subscript>2</subscript>. The degradation capacity of the indigenous microbial population was investigated in an agricultural soil and in a soil from a contaminated site. Very low mineralisation of 1% within 23 days was measured in the agricultural soil. Whereas in the soil from the contaminated site the mineralisation occurred very fast and in high rates; up to 62% of the initially applied amount of 1,2,4-TCB were mineralised within 23 days. The transfer of the adapted microbial population into the agricultural soil significantly enhanced the mineralisation of 1,2,4-TCB in this soil, reflecting, that the transferred microbial population survived and maintained its degradation ability in the new microbial ecosystem. Additional nutrition sources ((NH<subscript>4</subscript>)<subscript>2</subscript>HPO<subscript>4</subscript>) increased the mineralisation rates in the first days significantly in the contaminated soil. In the soil from the contaminated site high amounts of non extractable <superscript>14</superscript>C-residues were formed. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
02697491
Volume :
127
Issue :
3
Database :
Supplemental Index
Journal :
Environmental Pollution
Publication Type :
Academic Journal
Accession number :
11465957
Full Text :
https://doi.org/10.1016/j.envpol.2003.08.012