SSRN Electronic Journal,
Год журнала:
2022,
Номер
unknown
Опубликована: Янв. 1, 2022
Diesel
fuel
bioremediation
in
polluted
seawater
is
extremely
challenging,
especially
at
low
temperatures.
Here,
we
isolated
bacterial
consortia
from
rhizosphere
soil
of
Deschampsia
antarctica
(Livingston
Island)
with
the
ability
to
metabolize
petroleum
hydrocarbons,
including
naphthalene,
anthracene,
phenanthrene,
and
n-alkanes.
The
LR-30
(30ºC)
LR-10
(10ºC)
communities
also
degraded
33.4
31.2
(g/L)
out
50
(gDiesel/L)
seawater,
respectively,
7-day
batch
bioreactors.
Profiles
16S
rRNA
gene
sequencing
revealed
that
dominating
genera
community
end
process
were
Achromobacter
(49.3%),
Pseudomonas
(16.7%)
Rhodonobacter
(16.3%),
whereas
for
consortium
(75.3%)
(12.1%)
predominant
members.
Both
microbial
secreted
emulsifying
agents
enabled
access
hydrophobic
hydrocarbon
compounds.
We
developed
a
continuous
diesel
biodegradation
where
bioremediated
an
unprecedent
rate
(34.4
g/L
day),
while
achieved
(24.5
day).
abundance
fluctuated
before
reaching
steady-state,
yet
microbes
redundant
terms
metabolic
capacities
catabolism,
exhibiting
similar
composition
those
found
but
differed
some
composing
compared
Ecotoxicology and Environmental Safety,
Год журнала:
2022,
Номер
241, С. 113769 - 113769
Опубликована: Июнь 20, 2022
In
the
process
of
marine
oil
spill
remediation,
adding
highly
efficient
degrading
microorganisms
can
effectively
promote
degradation.
However,
in
practice,
effect
is
far
less
than
expected
due
to
inadaptability
environment
and
their
disadvantage
competition
with
indigenous
bacteria
for
nutrients.
this
article,
four
strains
were
isolated
from
seawater
Jiaozhou
Bay,
China,
where
a
crude
pipeline
explosion
occurred
seven
years
ago.
Results
high-throughput
sequencing,
diesel
degradation
tests
surface
activity
indicated
that
Peseudomonas
aeruginosa
ZS1
was
petroleum
bacterium
ability
produce
active
substances.
A
oil-degrading
bacterial
consortium
(named
SA)
constructed
by
another
test.
Degradation
products
analysis
SA
has
good
degrade
short
chain
alkanes,
especially
n-alkanes
(C10-C18).
Community
structure
showed
OTUs
Alcanivorax,
Peseudomona,
Ruegeria,
Pseudophaeobacter,
Hyphomonas
Thalassospira
on
genus
level
increased
after
remained
stable
throughout
recovery
period.
Most
these
enriched
related
known
alkane
hydrocarbon
degraders
previous
study.
it
first
time
report
Pseudophaeobacter
using
as
sole
carbon
source.
The
results
also
may
have
dominant
position
bacteria.
Oil
pollution
an
obvious
selective
microorganisms.
Although
promoted
injection,
microbial
community
took
longer
time.
Applied Sciences,
Год журнала:
2023,
Номер
13(13), С. 7789 - 7789
Опубликована: Июль 1, 2023
Among
the
micropollutants
identified
in
environment,
non-steroidal
anti-inflammatory
drugs
(NSAIDs)
dominate
more
and
often.
This
is
due
to
both
high
consumption
low
efficiency
of
biological
wastewater
treatment
plants,
where
initial
transformation
NSAIDs
most
often
takes
place.
The
solution
problem
may
be
using
preparations
supporting
activated
sludge
sewage
plants
biodegradation
NSAIDs.
Therefore,
research
aimed
develop
a
biopreparation
stimulating
plant
decompose
paracetamol
selected
based
on
strains
Stenotrophomonas
maltophilia
KB2,
Planococcus
sp.
S5,
Bacillus
thuringiensis
B1(2015b),
Pseudomonas
moorei
KB4
immobilized
sponge.
As
result
tests,
it
was
shown
that
optimal
species
composition
proposed
preparation
includes
all
tested
carrier
with
mass
1.2
g/L.
system
optimization
showed
amount
17
mg/g
carrier,
15
18
20
for
KB4,
respectively.
presence
phenol
stimulated
degradation
drugs,
this
effect
deepened
increasing
concentration.
At
same
time,
rate
mixture
did
not
depend
biomass.
lack
inhibition
an
additional
co-contaminant,
i.e.,
phenol,
indicates
constructed
way
has
chance
being
used
systems,
introduced
are
exposed
various
aromatic
compounds.
