CLEAN - Soil Air Water,
Год журнала:
2023,
Номер
52(2)
Опубликована: Дек. 28, 2023
Abstract
For
this
research,
a
28‐day
bioremediation
experiment
was
conducted,
simulating
an
oil
spill
on
the
Brazilian
coast
using
mesocosm
units
and
two
different
strategies,
adding
rate‐limiting
nutrients
in
form
of
NPK
fertilizer
during
first
four
days
(Bior1)
weekly
(Bior2).
The
gas
chromatography–mass
spectrometry
analysis
results
showed
that
natural
degradation
(Control)
removed
33.8
wt.%
alkanes
Day
7,
while
processes
plus
evaporation
Bior1
Bior2
contributed
to
minimizing
83.4
80.8
wt.%,
respectively.
strategy
also
accelerated
biodegradation
recalcitrant
polycyclic
aromatic
hydrocarbons
(PAH)
such
as
phenanthrene,
methyl
phenanthrenes,
dibenzothiophenes
up
second
week
when
compared
Bior2.
Low‐cost
addition
demonstrated
efficiency
strategy,
especially
simulated
(Bior1),
leading
savings
time
financial
investment
recovering
contaminated
area.
Results
oil‐degrading
bacteria
Pseudomonas
mesophilica,
identified
for
seawater.
In
addition,
confirmed
influence
tropical
temperatures
over
cleanup
solution
areas
countries,
sensitive
marine
environments.
Environmental Science and Pollution Research,
Год журнала:
2023,
Номер
30(59), С. 123439 - 123451
Опубликована: Ноя. 20, 2023
Asphaltenes
are
the
most
polar
and
heavy
fraction
of
petroleum,
their
complex
structure
toxicity
make
them
resistant
to
biodegradation.
The
ability
tolerate
high
asphaltene
concentrations
is
crucial
reducing
toxicity-related
inhibition
microbial
growth
improving
capacity
for
adaptation,
survival,
biodegradation
in
soils
highly
contaminated
with
asphaltenes.
This
study
developed
a
tolerant
consortium
efficient
from
22
bacterial
isolates
obtained
heavy-crude
oil-contaminated
soils.
Isolates
corresponded
Rhodococcus,
Bacillus,
Stutzerimonas,
Cellulosimicrobium,
Pseudomonas,
Paenibacillus
genera,
among
others,
used
pure
asphaltenes
crude
oil
as
only
carbon
sources.
Surface
plate
assays
were
evaluate
tolerance
individual
asphaltenes,
results
showed
variations
extension
rates
maximum
levels
at
60,000
mg
l-1.
Inhibition
select
non-antagonistic
those
showing
highest
A
made
up
five
was
able
degrade
83
wt.%
out
10,000
kg-1
soil
after
52
days.
Due
its
biological
compatibility,
tolerance,
utilise
it
source
energy,
degrading
this
work
has
shown
potential
bioremediation
promising
candidate
treatment
aged
areas
extra-heavy
oil.
would
be
first
research
assess
consider
extreme
antagonism
between
microbes,
leading
development
an
improved
capable
efficiently
amounts
soil.
