Effect of selected environmental factors on degradation and mineralization of biaryl compounds by the bacterium Ralstonia pickettii in soil and compost.
Chemosphere
; 36(10): 2321-35, 1998 Apr.
Article
em En
| MEDLINE
| ID: mdl-9566302
ABSTRACT
By varying selected environmental factors, the degradation and mineralization of biaryl compounds by the bacterium Ralstonia pickettii in soil and compost were investigated. An optimized soil moisture and enhanced bioavailability by using the nonionic surfactant Tween 80 were of great importance for the degradation rates of biaryl compounds like biphenyl and 4-chlorobiphenyl by cells of Ralstonia picketti SBUG 290 inoculated into soil. Additionally, degradation of these compounds by the investigated strain in soil was strongly dependent upon the medium of precultivation. Also the influence of temperature and soil pH-value was tested. In contrast to the used soil, the autochthonous flora of the compost seemed to have a higher physiological activity. All investigated compounds (biphenyl, 4-chlorobiphenyl and dibenzofuran) were degraded quickly in compost. Inoculation with the investigated bacterium did not enhance the degradation rates significantly.
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Base de dados:
MEDLINE
Assunto principal:
Solo
/
Microbiologia do Solo
/
Poluentes do Solo
/
Bacilos e Cocos Aeróbios Gram-Negativos
/
Compostos Bicíclicos Heterocíclicos com Pontes
Idioma:
En
Ano de publicação:
1998
Tipo de documento:
Article