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Mapa Mental por Mayerly Vargas, atualizado more than 1 year ago
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Criado por Mayerly Vargas
aproximadamente 3 anos atrás
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articles on hydrocarbon bioremediation
- LARGE-SCALE BIOAUGMENTATION OF SOILS
CONTAMINATED WITH PETROLEUM HYDROCARBONS
USING A MIXED MICROBIAL CONSORTIUM
- Soil
contamination
eroded
- method used was
bioaugmentation
treatment
- addition of 22
bacterial strains
- Laboratory experiments Preliminary
laboratory experiments were carried out to
test the efficacy of the bacterial consortium
used in the bioaugmentation of soil sludge
- Field Experiments Approximately
250 metric tons of materials were
excavated from the reserve of aged
and degraded TPH contaminated
soil and transported to a specially
prepared pit with a screen.
- resultados que se obtuvieron fueron La biorremediación
del suelo contaminado en estudios de laboratorio. La
adición del consorcio bacteriano resultó en una
degradación del 100% del TPH presente en el suelo
- conclusion This study highlights the importance of an
adapted indigenous consortium to improve the degradation
of hydrocarbons and confirms bioremediation as an
adequate strategy for the treatment of soils contaminated
with hydrocarbons on a commercial scale.
- conclusion This study highlights the importance of an
adapted indigenous consortium to improve the degradation
of hydrocarbons and confirms bioremediation as an
adequate strategy for the treatment of soils contaminated
with hydrocarbons on a commercial scale.
- resultados que se obtuvieron fueron La biorremediación
del suelo contaminado en estudios de laboratorio. La
adición del consorcio bacteriano resultó en una
degradación del 100% del TPH presente en el suelo
- Field Experiments Approximately
250 metric tons of materials were
excavated from the reserve of aged
and degraded TPH contaminated
soil and transported to a specially
prepared pit with a screen.
- Laboratory experiments Preliminary
laboratory experiments were carried out to
test the efficacy of the bacterial consortium
used in the bioaugmentation of soil sludge
- addition of 22
bacterial strains
- method used was
bioaugmentation
treatment
- Soil
contamination
eroded
- DECONTAMINATION OF POLYCYCLIC AROMATIC
HYDROCARBONS IN PEAS SEEDS BY GAMMA
IRRADIATION
- Soil contamination
- método que se utiliza
es semillas de
guisantes
- seeds were exposed to gamma irradiation at doses of 0,
1, 5, 10 and 15 kGy. PAHs were extracted and their
concentrations in each dose were determined by means
of a high-performance liquid chromatography equipped
with a fluorescent detector.
- Results show that PAH concentrations decreased as
the gamma irradiation dose increased, since the 15
kGy gamma irradiation dose reduced the total PAH in
the pea seeds studied by approximately 96%
- These findings are of great importance and clearly
indicate the practical possibility of gamma irradiation in
the decontamination of pea seeds from PAH without
changing their chemical content.
- These findings are of great importance and clearly
indicate the practical possibility of gamma irradiation in
the decontamination of pea seeds from PAH without
changing their chemical content.
- Results show that PAH concentrations decreased as
the gamma irradiation dose increased, since the 15
kGy gamma irradiation dose reduced the total PAH in
the pea seeds studied by approximately 96%
- seeds were exposed to gamma irradiation at doses of 0,
1, 5, 10 and 15 kGy. PAHs were extracted and their
concentrations in each dose were determined by means
of a high-performance liquid chromatography equipped
with a fluorescent detector.
- método que se utiliza
es semillas de
guisantes
- Soil contamination
- structural dynamics of microbial
communities in sediments of tropical
estuaries contaminated with
polycyclic aromatic hydrocarbons
subjected to simulated aerobic
biotreatment
- Environmental pollution by polycyclic
aromatic hydrocarbons (PAH
- Microbial community
method
- Sediment samples were collected from the
laguana de lagos
- Results. Biodegradation of all PAHs except benzo (a)
anthracene was detected in all sediments in 2 weeks The
degradation of benzo (a) anthracene was not apparent
until week 5
- Microbial degradation is a key process that affects the
fate of hap in soils and sediments, and can be carried
out by aerobic or anaerobic bacteria, however, of
these two groups, the range of hap degraded by
aerobes is much higher than that of the anaerobic.
- Microbial degradation is a key process that affects the
fate of hap in soils and sediments, and can be carried
out by aerobic or anaerobic bacteria, however, of
these two groups, the range of hap degraded by
aerobes is much higher than that of the anaerobic.
- Results. Biodegradation of all PAHs except benzo (a)
anthracene was detected in all sediments in 2 weeks The
degradation of benzo (a) anthracene was not apparent
until week 5
- Sediment samples were collected from the
laguana de lagos
- Microbial community
method
- Environmental pollution by polycyclic
aromatic hydrocarbons (PAH
- application of the landfarming
technique for the remediation of
soils contaminated with
hydrocarbons
- damage to water sources, soils, air,
fauna and vegetation
- Bioremediation .
- This technique consists of excavating the
contaminated soils, spreading them over a
sufficiently wide area and stimulating the
variables of incidence in the process to promote
the activity of the microorganisms in charge of
degrading the hydrocarbons
- Research shows the existence in
nature of microbial agents capable of
- The biological treatment of contaminated soils involves
the use of microorganisms and / or plants for the
degradation of organic pollutants. Biological activity alters
the molecular structure of the pollutant and the degree of
alteration determines whether biotransformation or
mineralization has occurred
- The most important chemical factor in Bioremediation
is the molecular structure of the pollutant, how it
affects its chemical and physical properties and its
ability to be biodegraded.
- The most important chemical factor in Bioremediation
is the molecular structure of the pollutant, how it
affects its chemical and physical properties and its
ability to be biodegraded.
- The biological treatment of contaminated soils involves
the use of microorganisms and / or plants for the
degradation of organic pollutants. Biological activity alters
the molecular structure of the pollutant and the degree of
alteration determines whether biotransformation or
mineralization has occurred
- Research shows the existence in
nature of microbial agents capable of
- This technique consists of excavating the
contaminated soils, spreading them over a
sufficiently wide area and stimulating the
variables of incidence in the process to promote
the activity of the microorganisms in charge of
degrading the hydrocarbons
- Bioremediation .
- damage to water sources, soils, air,
fauna and vegetation
- BIODEGRADATION OF POLYCYCLIC
AROMATIC HYDROCARBONS BY MICROBIAN
CONSORTIUM: A DISTINCTIVE APPROACH TO
SOIL DECONTAMINATION
- Soil contamination
- method of microbial
degradation by bacteria and
fungi
- consortium was conducted using microbial isolates
collected from different contaminated sites. the
species was isolated from the consortium of three
soils contaminated with heavy crude
- The use of microbial consortia is effective in cases
where there is a lack of sufficient microorganisms
for degradation or there is a high toxicity of
contaminants
- results it has been found that a consortium of
microbes is more effective than individual microbial
isolates microbial degradation process is quite
economical and does not cause ecological damage
- Conclusion of the article obrva that applying several
microorganisms in combination is a universally efficient
system to achieve synergistic improved rates for the
degradation of PAH. PAH-contaminated soils can be
remedied using microorganisms (bacteria and fungi
individually or in combination
- Conclusion of the article obrva that applying several
microorganisms in combination is a universally efficient
system to achieve synergistic improved rates for the
degradation of PAH. PAH-contaminated soils can be
remedied using microorganisms (bacteria and fungi
individually or in combination
- results it has been found that a consortium of
microbes is more effective than individual microbial
isolates microbial degradation process is quite
economical and does not cause ecological damage
- The use of microbial consortia is effective in cases
where there is a lack of sufficient microorganisms
for degradation or there is a high toxicity of
contaminants
- consortium was conducted using microbial isolates
collected from different contaminated sites. the
species was isolated from the consortium of three
soils contaminated with heavy crude
- method of microbial
degradation by bacteria and
fungi
- Soil contamination
- BIOLOGICAL TREATMENT OF TOTAL
PETROLEUM HYDROCARBONS
FROM AN OILY SLUDGE USING A
COMPOSTING APPROACH
- pollution of selo and
water resources
- co-composting
method
- For this, the samples were taken from the
treatments on certain days (0, 7, 15, 30 and 60)
with the sterilized spatula. About 50 g of samples
were taken for each experiment and stored in
non-reactive plastic bags for TPH and C / N
analysis.
- Results showed that most of the TPH of
the samples were extracted in the first 30
days. The maximum removal of TPHs
(65%) was obtained in the mud
- the proportions of compost and the
control sample (p value <0.05)
indicated the adequate density of TPH
degrading bacteria in the treated
samples
- the proportions of compost and the
control sample (p value <0.05)
indicated the adequate density of TPH
degrading bacteria in the treated
samples
- Results showed that most of the TPH of
the samples were extracted in the first 30
days. The maximum removal of TPHs
(65%) was obtained in the mud
- For this, the samples were taken from the
treatments on certain days (0, 7, 15, 30 and 60)
with the sterilized spatula. About 50 g of samples
were taken for each experiment and stored in
non-reactive plastic bags for TPH and C / N
analysis.
- co-composting
method
- pollution of selo and
water resources
- selected for hydrocarbon
degrading bacteria and enhanced
hydrocarbon biodegradation in
slurry bioreactors
- contamination of surface
and groundwater resources
- microbiome-based biotechnologies to
treat hydrocarbon contamination and
enhanced biodegradation of
hydrocarbons in slurries
- A sample of hydrocarbon-contaminated
weathered soils was obtained from a
production site in the Northwest Territories,
Canada. Mineralization experiments are
performed first Followed by an analysis of the
microbial community Gene expression, qPCR
and digital droplet PCR (ddPCR)
- Result The analysis of the microbial community
indicated a significant enrichment of the phylum
of Actinobacteria and an increase in the absolute
abundance of the genus Dietzia that degrades
hydrocarbons, but a decrease in the total size of
the population with salinity.
- Research findings. A degradation (up to 16 times greater) was
presented in a microbial community under saline conditions and
was associated with (up to 4.8 times) an increase in the absolute
abundance of a species that degrades hydrocarbons and up to 2.2
times the improvement in the mineralization rate constants. At
the same time, the population size decreased by up to 5.2 times in
the saline systems.
- Research findings. A degradation (up to 16 times greater) was
presented in a microbial community under saline conditions and
was associated with (up to 4.8 times) an increase in the absolute
abundance of a species that degrades hydrocarbons and up to 2.2
times the improvement in the mineralization rate constants. At
the same time, the population size decreased by up to 5.2 times in
the saline systems.
- Result The analysis of the microbial community
indicated a significant enrichment of the phylum
of Actinobacteria and an increase in the absolute
abundance of the genus Dietzia that degrades
hydrocarbons, but a decrease in the total size of
the population with salinity.
- A sample of hydrocarbon-contaminated
weathered soils was obtained from a
production site in the Northwest Territories,
Canada. Mineralization experiments are
performed first Followed by an analysis of the
microbial community Gene expression, qPCR
and digital droplet PCR (ddPCR)
- microbiome-based biotechnologies to
treat hydrocarbon contamination and
enhanced biodegradation of
hydrocarbons in slurries
- contamination of surface
and groundwater resources
- advanced treatment of
wastewater bioreactors
containing hydrocarbons
- organic pollution
of the
environment
- Aerobic
bioreactors
- Samples and tests applied. A continuously
stirred tank bioreactor was applied to treat
hydrocarbon-rich wastewater from an oil
refinery using an acclimatized indigenous
microbial consortium.The performance of the
bioaugmented reactor was demonstrated by
reducing the chemical oxygen demand (COD)
rates to a 95% and the concentration of total
residual petroleum hydrocarbons (TPH) up to
97.5% (from 320 mg / L to 8 mg / L) Evaluated
the performance of a batch sequencing reactor
(SBR) with previously cultured activated sludge
microorganisms to treat synthetic
petrochemical wastewater containing mercury
and cadmium.
- Samples and tests applied. A continuously
stirred tank bioreactor was applied to treat
hydrocarbon-rich wastewater from an oil
refinery using an acclimatized indigenous
microbial consortium.The performance of the
bioaugmented reactor was demonstrated by
reducing the chemical oxygen demand (COD)
rates to a 95% and the concentration of total
residual petroleum hydrocarbons (TPH) up to
97.5% (from 320 mg / L to 8 mg / L) Evaluated
the performance of a batch sequencing reactor
(SBR) with previously cultured activated sludge
microorganisms to treat synthetic
petrochemical wastewater containing mercury
and cadmium.
- Aerobic
bioreactors
- organic pollution
of the
environment
- degradación microbiana de
hidrocarburos de petróleo
- contamination of soils and
bodies of Water
- Methodology used. We worked with tank
bottoms from the oil industry that have been
previously treated with water washing at 70 ° C
with biodegradable surfactant, which reduced
the hydrocarbon content
- The initial characteristics of the tank bottom
make it a material for the use of biological
techniques in the elimination of hydrocarbons.
- The residue from the tank bottom washing contained
bacteria in sufficient quantity for the use of the hydrocarbon
biodegradation techniques of the sample, this presented a
predominance of the genera Pseudomonas sp. and
Rhodococcus sp
- The residue from the tank bottom washing contained
bacteria in sufficient quantity for the use of the hydrocarbon
biodegradation techniques of the sample, this presented a
predominance of the genera Pseudomonas sp. and
Rhodococcus sp
- The initial characteristics of the tank bottom
make it a material for the use of biological
techniques in the elimination of hydrocarbons.
- Methodology used. We worked with tank
bottoms from the oil industry that have been
previously treated with water washing at 70 ° C
with biodegradable surfactant, which reduced
the hydrocarbon content
- contamination of soils and
bodies of Water
- Microbial degradation of petrochemical
residues-polycyclic aromatic
hydrocarbons
- The problem of pollution is linked to economic, social
and political factors; that have led to a deterioration of
natural resources
- Bioremediation is a technology that uses the
metabolic potential of microorganisms
(mainly bacteria, but also fungi and yeasts)
to transform organic pollutants into simpler
compounds
- Among the techniques used for the remediation of
soils contaminated with PAH there are physical,
chemical, thermal and biological processes
- The bioremediation of soils or areas of water
contaminated with crude oil, depend on the ability to
establish and maintain the appropriate conditions in the
microorganisms and thus favor the process, otherwise
the efficiency decreases
- Bioremediation is a practice that is gaining importance
worldwide since the increase in industrial activity is
increasingly degrading natural ecosystems and the use of
known microorganisms for the treatment of potentially toxic
waste is already a common practice in developed countries. .
- Bioremediation is a practice that is gaining importance
worldwide since the increase in industrial activity is
increasingly degrading natural ecosystems and the use of
known microorganisms for the treatment of potentially toxic
waste is already a common practice in developed countries. .
- The bioremediation of soils or areas of water
contaminated with crude oil, depend on the ability to
establish and maintain the appropriate conditions in the
microorganisms and thus favor the process, otherwise
the efficiency decreases
- Among the techniques used for the remediation of
soils contaminated with PAH there are physical,
chemical, thermal and biological processes
- Bioremediation is a technology that uses the
metabolic potential of microorganisms
(mainly bacteria, but also fungi and yeasts)
to transform organic pollutants into simpler
compounds
- The problem of pollution is linked to economic, social
and political factors; that have led to a deterioration of
natural resources
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