NZVI
is
commonly
used
in
industrial
wastewater
treatment.
However,
its
long-term
inhibition
mechanisms
of
metabolization
anaerobic
sludge
systems
are
not
well
understood.
This
study
investigated
the
effects
on
methanogenic
activity,
microbial
community,
and
transcription
activity.
The
results
demonstrated
that
only
5000
mg/L
led
to
a
significant
reduction
cumulative
methane
production
(14.4%
control)
within
30
days.
adversely
affected
cell
viability,
ATP
production,
extracellular
polymer
(EPS),
particularly
at
higher
concentrations.
Cell
membranes
played
crucial
role
resisting
chronic
toxicity.
Moreover,
high
levels
hindered
key
enzymes
CoM
mcrA,
while
low
down-regulated
cdh
hdr,
respectively.
Besides,
amino-utilizing
bacteria
was
reduced
under
concentration,
changed
dominant
genus
with
potential
protein
hydrolysis
function
from
Candidatus
Cloacamonas
Sedimentibacter.
similar
change
observed
archaeal
community
Journal of Bio- and Tribo-Corrosion,
Journal Year:
2024,
Volume and Issue:
10(1)
Published: Jan. 31, 2024
Abstract
The
loss
of
materials
due
to
corrosion
is
inevitable
and
has
gained
significant
attention
at
various
stages
in
the
process
industries,
including
petroleum,
food
processing
units,
tanneries.
With
detrimental
effects
occurring
as
a
result
microbial
activity,
research
on
methods
keep
them
under
control
become
essential.
About
10%
affliction
metals
non-metals
activity.
Microbiologically
Influenced
Corrosion
(MIC)
consequence
contact,
which
are
synergetic
between
bacteria
metals.
A
typical
marine
electroactive
bacterium
shown
produce
severe
MIC
Pseudomonas
aeruginosa
.
In
maritime
environment,
that
extremely
corrosive
stainless
steel.
However,
little
known
about
how
P.
causes
Stainless
steel
beneficial
material
been
employed
applications
its
corrosion-resistant
properties
mechanical
strength.
property
strongly
resist
owed
presence
chromium
composition.
forms
passive
film
chromium-rich
oxide
aerobic
conditions
low
temperatures,
protects
it
from
surroundings.
This
layer
can
be
harmed
by
harsh
weather
conditions.
activity
their
existence
modify
inorganic
layers,
raising
dissolution
levels
detaching
surface
metal.
review
aims
study
explicated
methodologies
more
within
broader
context
metal–microbe
interactions.
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
29, P. 386 - 399
Published: Jan. 17, 2024
The
microbiologically
influenced
corrosion
of
CoCrMnNi
high
entropy
alloy
induced
by
P.
aeruginosa
was
investigated
in
this
work.
results
electrochemical
tests,
time-of-flight
secondary
ion
mass
spectrometry
and
X-ray
photoelectron
spectroscopy
showed
that
the
thickness
passive
film
significantly
decreased
presence
HEA
accelerated.
When
organic
nutrients
were
deficient,
extracellular
electron
transfer
process
promoted
resistance
further
according
to
potentiodynamic
polarization
Mott-Schottky.
effect
deficiency
on
MIC
acceleration
more
prominent
after
degradation
film.
Mn
metal
substrate
preferentially
participated
bacterial
metabolism
as
an
alternative
energy
source
due
activity.
Physics of Fluids,
Journal Year:
2025,
Volume and Issue:
37(1)
Published: Jan. 1, 2025
Microbiologically
influenced
corrosion
(MIC)
is
a
universal
issue
of
significant
concern
in
the
petroleum
industry,
with
potential
for
enormous
economic
losses
and
casualties.
This
study
focused
on
effect
temperature
MIC
mechanism.
The
rate,
morphology,
products,
microbial
community
composition
produced
fluid
samples
from
Zhanjiang
oilfield
were
measured
after
anaerobic
culture
at
30
60
°C
14
days.
rate
Z1
Z2
decreased
increasing
temperature,
while
Z3
sample
changed
light
to
heavy
corrosion.
was
dominated
by
pitting
corrosion,
had
relatively
smooth
surface,
observed
have
one
dimensional
wormhole
°C.
16S
ribosomal
deoxyribonucleic
acid
(rDNA)
sequence
showed
that
bacterial
communities
Pseudomonas
Bacillus,
archaeal
mainly
composed
Methanothermobacter,
Methanosaeta,
Candidatus
Nitrosotenuis,
which
prevalent
It
suggested
could
be
caused
extracellular
electron
transfer
reduction
nitrate
or
nitrite
N2
NH4+
bacteria,
utilization
CO2
produce
CH4
archaea.
Overall,
results
this
can
provide
comprehensive
data
new
insights
into
management
strategies
oil
fields.
