Biodegradation of petroleum hydrocarbons in the presence of nickel and cobalt
Identifieur interne : 000320 ( Main/Exploration ); précédent : 000319; suivant : 000321Biodegradation of petroleum hydrocarbons in the presence of nickel and cobalt
Auteurs : Ganiyu Oladunjoye Oyetibo [Nigeria] ; Matthew Olusoji Ilori [Nigeria] ; Oluwafemi Sunday Obayori [Nigeria] ; Olukayode Oladipo Amund [Nigeria]Source :
- Journal of Basic Microbiology [ 0233-111X ] ; 2013-11.
Descripteurs français
- Wicri :
- topic : Cobalt, Pétrole brut, Métal lourd, Nickel.
English descriptors
- KwdEn :
Abstract
Bioremediation of environments co‐contaminated with hydrocarbons and heavy metals often pose a challenge as heavy metals exert toxicity to existing communities of hydrocarbon degraders. Multi‐resistant bacterial strains were studied for ability to degrade hydrocarbons in chemically defined media amended with 5.0 mM Ni2+, and Co2+. The bacteria, Pseudomonas aeruginosa CA207Ni, Burkholderia cepacia AL96Co, and Corynebacterium kutscheri FL108Hg, utilized crude oil and anthracene without lag phase at specific growth rate spanning 0.3848–0.8259 per day. The bacterial populations grew in hydrocarbon media amended with nickel (Ni) and cobalt (Co) at 0.8393–1.801 days generation time (period of exponential growth, t = 15 days). The bacteria degraded 96.24–98.97, and 92.94–96.24% of crude oil, and anthracene, respectively, within 30 days without any impedance due to metal toxicity (at 5.0 mM). Rather, there was reduction of Ni and Co concentrations in the axenic culture 30 days post‐inoculation to 0.08–0.12 and 0.11–0.15 mM, respectively. The metabolic functions of the bacteria are active in the presence of toxic metals (Ni and Co) while utilizing petroleum hydrocarbons for increase in biomass. These findings are useful to other baseline studies on decommissioning of sites co‐contaminated with hydrocarbons and toxic metals.
Url:
DOI: 10.1002/jobm.201200151
Affiliations:
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Basic Microbiol</title><idno type="ISSN">0233-111X</idno><idno type="eISSN">1521-4028</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2013-11">2013-11</date><biblScope unit="volume">53</biblScope><biblScope unit="issue">11</biblScope><biblScope unit="page" from="917">917</biblScope><biblScope unit="page" to="927">927</biblScope></imprint><idno type="ISSN">0233-111X</idno></series><idno type="istex">0D2AF385C991E40557FF9D0C3EF53780179ABCE7</idno><idno type="DOI">10.1002/jobm.201200151</idno><idno type="ArticleID">JOBM201200151</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0233-111X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anthracene</term><term>Bacteria</term><term>Biodegradation</term><term>Cobalt</term><term>Crude oil</term><term>Heavy metal</term><term>Nickel</term><term>Petroleum hydrocarbon</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Cobalt</term><term>Pétrole brut</term><term>Métal lourd</term><term>Nickel</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Bioremediation of environments co‐contaminated with hydrocarbons and heavy metals often pose a challenge as heavy metals exert toxicity to existing communities of hydrocarbon degraders. Multi‐resistant bacterial strains were studied for ability to degrade hydrocarbons in chemically defined media amended with 5.0 mM Ni2+, and Co2+. The bacteria, Pseudomonas aeruginosa CA207Ni, Burkholderia cepacia AL96Co, and Corynebacterium kutscheri FL108Hg, utilized crude oil and anthracene without lag phase at specific growth rate spanning 0.3848–0.8259 per day. The bacterial populations grew in hydrocarbon media amended with nickel (Ni) and cobalt (Co) at 0.8393–1.801 days generation time (period of exponential growth, t = 15 days). The bacteria degraded 96.24–98.97, and 92.94–96.24% of crude oil, and anthracene, respectively, within 30 days without any impedance due to metal toxicity (at 5.0 mM). Rather, there was reduction of Ni and Co concentrations in the axenic culture 30 days post‐inoculation to 0.08–0.12 and 0.11–0.15 mM, respectively. The metabolic functions of the bacteria are active in the presence of toxic metals (Ni and Co) while utilizing petroleum hydrocarbons for increase in biomass. These findings are useful to other baseline studies on decommissioning of sites co‐contaminated with hydrocarbons and toxic metals.</div></front></TEI><affiliations><list><country><li>Nigeria</li></country></list><tree><country name="Nigeria"><noRegion><name sortKey="Oyetibo, Ganiyu Oladunjoye" sort="Oyetibo, Ganiyu Oladunjoye" uniqKey="Oyetibo G" first="Ganiyu Oladunjoye" last="Oyetibo">Ganiyu Oladunjoye Oyetibo</name></noRegion><name sortKey="Amund, Olukayode Oladipo" sort="Amund, Olukayode Oladipo" uniqKey="Amund O" first="Olukayode Oladipo" last="Amund">Olukayode Oladipo Amund</name><name sortKey="Ilori, Matthew Olusoji" sort="Ilori, Matthew Olusoji" uniqKey="Ilori M" first="Matthew Olusoji" last="Ilori">Matthew Olusoji Ilori</name><name sortKey="Obayori, Oluwafemi Sunday" sort="Obayori, Oluwafemi Sunday" uniqKey="Obayori O" first="Oluwafemi Sunday" last="Obayori">Oluwafemi Sunday Obayori</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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