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.
International Journal of Biological Macromolecules,
Год журнала:
2025,
Номер
unknown, С. 142278 - 142278
Опубликована: Март 1, 2025
Industrial
activities,
pharmaceutical
contaminants,
excessive
agricultural
inputs,
and
improper
waste
disposal
have
contributed
to
the
widespread
pollution
of
soil
water.
Traditional
remediation
techniques,
while
effective,
often
generate
secondary
are
economically
unfeasible.
In
contrast,
microbial
bioremediation
offers
a
sustainable
cost-effective
alternative
by
utilizing
microorganisms
their
enzymatic
systems
degrade
detoxify
pollutants.
This
review
investigates
potential
enzymes
in
strategies
for
removing
heavy
metals
contaminants
from
polluted
environments.
It
analyzes
fundamental
mechanisms
which
sequester
these
pollutants,
emphasizing
processes
that
facilitate
breakdown.
Furthermore,
it
explores
key
factors
influencing
efficiency,
including
diversity
environmental
conditions.
Additionally,
examines
challenges
associated
with
scaling
global
applications
provides
insights
future
research
implementation.
Microorganisms,
Год журнала:
2024,
Номер
12(3), С. 470 - 470
Опубликована: Фев. 26, 2024
There
is
currently
growing
interest
in
the
creation
of
artificial
microbial
consortia,
especially
field
developing
and
applying
various
bioremediation
processes.
Heavy
metals,
dyes,
synthetic
polymers
(microplastics),
pesticides,
polycyclic
aromatic
hydrocarbons
pharmaceutical
agents
are
among
pollutants
that
have
been
mainly
targeted
by
based
on
consortia
containing
fungi
(mycelial
types
yeasts).
Such
can
be
designed
both
for
treatment
soil
water.
This
review
aimed
at
analyzing
recent
achievements
research
useful
environmental
technologies,
where
fungal
cells
applied.
The
main
tendencies
formation
certain
combinations,
preferences
their
forms
usage
(suspended
or
immobilized),
evaluated
using
current
publications,
place
genetically
modified
with
assessed.
effect
multicomponence
estimated,
as
well
influence
this
factor
functioning
efficiency
pollutant
removal
efficacy.
conclusions
development
new
mixed
biocatalysts
eco-compatible
remediation
processes
implement
cells.
Green Chemistry Letters and Reviews,
Год журнала:
2024,
Номер
17(1)
Опубликована: Июнь 6, 2024
Heavy
metal
compounds
are
used
in
a
variety
of
industrial
processes,
including
tanning,
chrome
plating,
anti-corrosion
treatments,
and
wood
preservation.
ion
pollution
water
wastewater
is
often
caused
by
effluent
discharge
into
open
sources.
Toxic
heavy
ions
such
as
As
(III),
Cr
(VI),
Cd
(II),
Pb
(II)
well-known
enter
the
body
through
pathways,
food
chain,
respiration,
skin
absorption,
drinking
water.
These
produce
oxidative
stress
cells,
resulting
cell
organelle
destruction.
metals
toxicity
may
cause
genetic
material
mutation
or
change,
histone
modification,
epigenetic
alteration
at
various
stages.
Furthermore,
linked
to
heart
failure,
renal
damage,
liver
problems.
For
cleanup,
several
standard
approaches
utilized.
Nonetheless,
these
technologies
costly
result
toxic
sludge
after
treatment.
result,
there
an
urgent
need
for
appropriate,
environmentally
safe,
efficient
removal
technology.
removal,
microbial-based
regarded
both
benign
cost-effective.
This
review
focuses
on
water,
its
harmful
consequences,
cleanup
microbiological
means.
Applied Sciences,
Год журнала:
2024,
Номер
14(13), С. 5616 - 5616
Опубликована: Июнь 27, 2024
The
study
aimed
to
evaluate
for
the
first
time
degree
of
contamination
soil
and
crops
with
major
trace
elements
(Cd,
Co,
Cr,
Cu,
Ni,
Pb,
Zn,
F,
Na,
Mg,
Si,
P,
Cl,
Fe,
Al)
in
agricultural
lands
situated
Lower
Danube
Basin,
Galati
Braila
counties
(SE
Romania),
impacted
by
steel
industry.
Soil
samples,
as
well
leaves
seeds
wheat,
corn,
sunflower,
were
collected
from
two
depths
11
different
sites.
Along
elemental
mineralogical
analyses,
performed
HR-CS
AAS,
PIGE,
SEM-EDX,
ATR-FTIR,
pH,
texture,
organic
matter,
electric
conductivity,
CaCO3
content
investigated.
results
showed
that
levels
Cr
(83.27–383.10
mg
kg−1),
Cu
(17.11–68.15
Ni
(30.16–55.66
F
(319–544
kg−1)
exceeded
Romanian
regulations
sensitive
use
land.
Igeo,
EF,
PI,
PERI
pollution
indices
indicate
is
moderate
highly
contaminated
while
CSI
mERMQ
suggested
a
relatively
low
risk
metal
contamination.
concentrations
plant
tissues
bioaccumulation
factors
(BFs)
provide
valuable
insights
into
soil–plant
relationship,
health
risks,
selectivity
compartments
elements.
Thus,
revealed
wheat
plants
tended
exclude
particular
their
tissues,
exhibiting
pattern
Zn
Cu.
In
case
most
BFs
below
one,
indicating
limited
phytoaccumulation
capacity.
However,
exceptions
observed
Cd,
sunflower
higher
bioconcentration
these
compared
other
Chromium
(Cr)
contributes
non-carcinogenic
dermal
contact
ingestion
hazards,
children
being
more
susceptible
adverse
effects
this
contaminant.
Gels,
Год журнала:
2024,
Номер
10(4), С. 259 - 259
Опубликована: Апрель 11, 2024
The
removal
of
toxic
heavy
metal
ions
from
wastewater
is
great
significance
in
the
protection
environment
and
human
health.
Poly(gamma-glutamic
acid)
(PGA)
a
non-toxic,
biodegradable,
highly
water-soluble
polymer
possessing
carboxyl
imino
functional
groups.
Herein,
water-insoluble
PGA-based
hydrogels
were
prepared,
characterized,
investigated
as
adsorbents.
prepared
recyclable
exhibited
good
adsorption
effects
on
including
Cu2+,
Cr6+,
Zn2+.
parameters
temperature,
solution
pH,
initial
concentration
ions,
contact
time
capacity
hydrogel
for
Cu2+
investigated.
was
spontaneous
exothermic
process.
process
followed
pseudo-first-order
kinetic
model
Langmuir
isotherm
model,
implying
physical
monolayer
adsorption.
mechanisms
investigation
that
adsorbed
via
electrostatic
interactions
with
anionic
carboxylate
groups
PGA
addition
to
coordination
–NH
Importantly,
reusability
capability
remained
high
after
five
consecutive
cycles.
properties
make
it
potential
candidate
material
ion
treatment.
