A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperatures
The results of kinetic studies of bacterial depyritization of HCl-kerogen concentrate of Aleksinac (Serbia) oil shale by the chemolithoautotrophic thionic bacteria Thiobacillus ferrooxidans under discontinuous laboratory conditions at various temperatures (0, 20, 28 and 37°C) at a pH of ca. 1.5 are...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Serbian Chemical Society
2003-05-01
|
Series: | Journal of the Serbian Chemical Society |
Subjects: | |
Online Access: | http://www.shd.org.yu/HtDocs/SHD/Vol68/No4-5/V68-No4_5-19.pdf |
id |
doaj-04c0bac616eb4b65a7dfc782b44dee6c |
---|---|
record_format |
Article |
spelling |
doaj-04c0bac616eb4b65a7dfc782b44dee6c2020-11-24T22:43:07ZengSerbian Chemical Society Journal of the Serbian Chemical Society0352-51392003-05-01684-5417423A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperaturesOLGA CVETKOVICDRAGOMIR VITOROVICSNEZANA SPASICVALERIJA MATICVESNA DRAGUTINOVICMIROSLAV M. VRVICThe results of kinetic studies of bacterial depyritization of HCl-kerogen concentrate of Aleksinac (Serbia) oil shale by the chemolithoautotrophic thionic bacteria Thiobacillus ferrooxidans under discontinuous laboratory conditions at various temperatures (0, 20, 28 and 37°C) at a pH of ca. 1.5 are presented in this paper. Low pH prevents the occurrence of the precipitation of iron(III)-ion hydrolysis products on the substrate particles and thereby reduces the process efficiency. Bacterial depyritization is developed as per kinetics of the first order. The activation energy which points to a successive mechanism of pyrite biooxidation, was computed from the Arrhenius plot. The biochemical kinetics indicators point to a high affinity of the bacteria toward pyrite but small values of Vmax, which are probably the result of decelerated metabolic processes due to the low pH value of the environment resp. the large difference of the pH between the external medium and the cell interior.http://www.shd.org.yu/HtDocs/SHD/Vol68/No4-5/V68-No4_5-19.pdfoil shaleThiobacillus ferrooxidansdepyritizationkinetics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
OLGA CVETKOVIC DRAGOMIR VITOROVIC SNEZANA SPASIC VALERIJA MATIC VESNA DRAGUTINOVIC MIROSLAV M. VRVIC |
spellingShingle |
OLGA CVETKOVIC DRAGOMIR VITOROVIC SNEZANA SPASIC VALERIJA MATIC VESNA DRAGUTINOVIC MIROSLAV M. VRVIC A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperatures Journal of the Serbian Chemical Society oil shale Thiobacillus ferrooxidans depyritization kinetics |
author_facet |
OLGA CVETKOVIC DRAGOMIR VITOROVIC SNEZANA SPASIC VALERIJA MATIC VESNA DRAGUTINOVIC MIROSLAV M. VRVIC |
author_sort |
OLGA CVETKOVIC |
title |
A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperatures |
title_short |
A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperatures |
title_full |
A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperatures |
title_fullStr |
A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperatures |
title_full_unstemmed |
A kinetic study of the depyritization of oil shale HCl-kerogen concentrate by Thiobacillus ferrooxidans at different temperatures |
title_sort |
kinetic study of the depyritization of oil shale hcl-kerogen concentrate by thiobacillus ferrooxidans at different temperatures |
publisher |
Serbian Chemical Society |
series |
Journal of the Serbian Chemical Society |
issn |
0352-5139 |
publishDate |
2003-05-01 |
description |
The results of kinetic studies of bacterial depyritization of HCl-kerogen concentrate of Aleksinac (Serbia) oil shale by the chemolithoautotrophic thionic bacteria Thiobacillus ferrooxidans under discontinuous laboratory conditions at various temperatures (0, 20, 28 and 37°C) at a pH of ca. 1.5 are presented in this paper. Low pH prevents the occurrence of the precipitation of iron(III)-ion hydrolysis products on the substrate particles and thereby reduces the process efficiency. Bacterial depyritization is developed as per kinetics of the first order. The activation energy which points to a successive mechanism of pyrite biooxidation, was computed from the Arrhenius plot. The biochemical kinetics indicators point to a high affinity of the bacteria toward pyrite but small values of Vmax, which are probably the result of decelerated metabolic processes due to the low pH value of the environment resp. the large difference of the pH between the external medium and the cell interior. |
topic |
oil shale Thiobacillus ferrooxidans depyritization kinetics |
url |
http://www.shd.org.yu/HtDocs/SHD/Vol68/No4-5/V68-No4_5-19.pdf |
work_keys_str_mv |
AT olgacvetkovic akineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT dragomirvitorovic akineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT snezanaspasic akineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT valerijamatic akineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT vesnadragutinovic akineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT miroslavmvrvic akineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT olgacvetkovic kineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT dragomirvitorovic kineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT snezanaspasic kineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT valerijamatic kineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT vesnadragutinovic kineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures AT miroslavmvrvic kineticstudyofthedepyritizationofoilshalehclkerogenconcentratebythiobacillusferrooxidansatdifferenttemperatures |
_version_ |
1725697467947679744 |