Environmental Science & Technology,
Год журнала:
2024,
Номер
58(49), С. 21680 - 21691
Опубликована: Ноя. 27, 2024
Sulfate-reducing
microorganisms
(SRMs)
show
promise
for
heavy
metal
removal
from
contaminated
environments,
but
their
scalability
is
limited
by
reliance
on
organic
carbon,
sludge
formation,
and
CO2
emissions.
This
study
investigates
using
photoelectrons
biogenic
(Bio-ZnS)
abiogenic
(Abio-ZnS)
sphalerite
nanoparticles
to
enhance
the
activity
of
Desulfovibrio
desulfuricans
G20
(G20)
sulfate
reduction
lead
without
substrates.
Both
Abio-ZnS
Bio-ZnS
NPs
promote
energy
production
in
cells
under
illumination
addition
substrates,
with
achieving
1.6
times
greater
3.1
higher
ATP
compared
Abio-ZnS.
superior
performance
due
wider
band
gap,
photoconversion
efficiency,
lower
charge-transfer
resistance,
closer
proximity
cells,
which
enable
more
efficient
photoelectron
uptake,
enhanced
intracellular
electron
transfer,
reduced
consumption
motion
filamentation.
The
uptake
also
promotes
G20s
resistance
high
Pb2+
concentrations
through
PbS
precipitation,
biofilm
enzymatic
detoxification,
efflux,
thus
improving
long-term
cyclic
substrate-depleted
conditions.
approach
harnesses
solar
energy,
reduces
lowers
costs
emissions,
offering
a
sustainable
solution
utilizing
SRMs
bioremediation.
Processes,
Год журнала:
2025,
Номер
13(1), С. 276 - 276
Опубликована: Янв. 19, 2025
Heavy
metals
are
among
the
most
toxic
environmental
pollutants.
They
a
group
of
chemical
elements
broadly
distributed
in
different
environments.
Anthropogenic
activities
such
as
agriculture,
livestock
farming,
and
mining
release
large
amounts
waste
that
contain
heavy
into
environment.
Bacteria
organisms
present
wide
diversity
cellular
mechanisms
can
be
used
to
develop
efficient,
low-cost,
easy-to-implement,
sustainable
processes
remediate
sites
contaminated
with
metals.
In
this
study,
capacity
strain
Burkholderia
zhejiangensis
CEIB
S4-3
remove
Cd,
Pb,
mixture
both
was
evaluated
through
vitro
experiments.
B.
eliminate
on
average
90%
Cd+2
91%
Pb+2
study
system
(50
mg/L),
while
presence
metals,
bacterial
strain,
removal
Cd
Pb
59
75%,
respectively.
The
main
mechanism
for
removing
extracellular
biosorption,
while,
case
it
intracellular
bioaccumulation.
from
were
removed
absorption.
addition,
analysis
genome
revealed
genes
related
resistance
implicated
sensing
transcriptional
response
exposure
efflux
systems
important.
data
obtained
work
basis
developing
new
using
S4-3.
PLoS ONE,
Год журнала:
2025,
Номер
20(1), С. e0307918 - e0307918
Опубликована: Янв. 29, 2025
Arsenic-resistant
Klebsiella
oxytoca
strain
AT-02
was
isolated
from
the
ground
water
of
Multan
region
Pakistan.
The
displayed
high
arsenite
and
arsenate
resistance
as
minimal
inhibitory
concentration
(MIC)
600ppm
10,000ppm
respectively.
tolerance
towards
can
be
postulated
due
to
significant
increase
in
biofilm
response
arsenate.
bacterial
exposed
1/2
3/4
MIC
showed
a
10
12
folds
expression
efflux
gene
arsB.
Sequential
structural
comparison
arsB
presence
conserved
arsenic
binding
residues.
Arsenic
remediation
by
biomass
50%
after
0.5
hours
incubation
66%
2
hours.
efficiency
with
time
indicates
its
biosorption
potential.
sensitive
NK11
only
4-5%
remediation.
Fourier
transform
infrared
spectroscopy
(FTIR)
analysis
confirmed
interaction
functional
groups
(aromatic
amino
acid
residues)
on
cell
surface
leading
characteristic
peak
shifts.
Thus,
has
potential
remediate
both
contaminated
environmental
sites.
BIO Web of Conferences,
Год журнала:
2025,
Номер
156, С. 02013 - 02013
Опубликована: Янв. 1, 2025
This
review
explores
the
potential
of
macroalgae
in
heavy
metal
phytoremediation,
focusing
on
their
ability
to
absorb
and
sequester
toxic
metals
from
contaminated
aquatic
environments.
Heavy
metals,
pose
significant
ecological
health
risks
due
persistence
bioaccumulation.
Phytoremediation,
particularly
using
macroalgae,
offers
a
sustainable,
eco-friendly
alternative
traditional
chemical
methods.
Data
various
studies
show
that
species
such
as
Sargassum
wightii
,
Caulerpa
racemosa
Durvillaea
antarctica
demonstrate
high
efficiency
removing
metals.
The
discusses
key
challenges
scaling
up
cultivation
safe
disposal
metal-
laden
biomass.
Additionally,
it
highlights
gaps
current
research,
emphasizing
need
for
standardized
protocols
further
investigation
into
mechanisms
uptake.
Overall,
macroalgae-based
phytoremediation
presents
promising
solution
mitigating
pollution
enhancing
ecosystem
health.
FUDMA Journal of Sciences,
Год журнала:
2025,
Номер
9(2), С. 193 - 208
Опубликована: Фев. 28, 2025
Tannery
effluent
poses
significant
risks
to
soil
health,
primarily
through
contamination
with
heavy
metals
like
chromium,
sulphides,
and
persistent
organic
pollutants
(POPs).
These
toxic
substances
inhibit
microbial
activity,
reducing
nutrient
cycling
matter
decomposition
essential
for
fertility.
Beneficial
microorganisms,
including
nitrogen-fixing
bacteria,
are
particularly
affected,
leading
altered
communities
dominated
by
less
advantageous,
metal-tolerant
species.
Accumulation
of
POPs
disrupts
enzymatic
activities,
interferes
plant
root
growth,
complicates
remediation
efforts
due
pollutant
migration
groundwater
potential
entry
into
the
food
chain.
Prolonged
exposure
such
contaminants
diminishes
fertility,
reduces
resilience,
ecosystem
services,
posing
threats
agricultural
productivity
environmental
health.
This
review
was
aimed
outline
what
made
bioremediation
a
superior
treatment
technology
among
other
methods
used
in
remediating
tannery
contaminated
soil.
Efforts
mitigate
impacts
involve
combination
physical,
chemical,
biological
technologies.
Physical
washing,
flushing,
thermal
desorption
focus
on
removing
or
isolating
contaminants,
while
chemical
approaches
as
oxidation,
reduction,
stabilization
transform
harmful
forms
immobilize
them.
Biological
leverages
microorganisms
plants
detoxify
sustainably.
Bioremediation
strategies
aid
bioaugmentation
biostimulation
do
enhance
activity
address
inorganic
effectively
more
than
physical
methods.
Another
excellent
called
phytoremediation
can
also
effectively,
Achieving
better
technique
should
be
coupled
stringent
industrial
regulations,
sustainable
tanning
methods,
stakeholder
awareness
Leuser Journal of Environmental Studies,
Год журнала:
2025,
Номер
3(1), С. 44 - 55
Опубликована: Апрель 26, 2025
Geothermal
ecosystems
are
defined
by
extreme
environmental
conditions,
such
as
elevated
temperatures,
high
concentrations
of
toxic
chemicals,
and
fluctuations
in
abiotic
stressors,
which
shape
plant
survival
adaptation.
These
unique
ecosystems,
found
across
various
geothermal
regions
globally,
support
specialized
communities
that
have
developed
distinctive
morphological,
physiological,
ecological
adaptations.
Indonesia,
located
on
the
Pacific
Ring
Fire,
is
one
world’s
richest
nations,
offering
an
important
yet
underexplored
context
for
studying
vegetation
zones.
This
review
examines
conditions
adaptive
strategies
vegetation,
patterns
diversity
within
Indonesian
fields.
It
also
explores
succession,
community
dynamics,
potential
use
indicators
biomonitoring.
Despite
growing
interest,
significant
research
gaps
remain,
particularly
long-term
monitoring
integration
molecular-level
studies.
Addressing
these
essential
enhancing
scientific
understanding
informing
conservation
sustainable
energy
development
tropical
regions.
highlights
significance
underscores
need
interdisciplinary
to
both
biodiversity
preservation
responsible
exploitation.
