Microorganisms,
Год журнала:
2022,
Номер
10(11), С. 2142 - 2142
Опубликована: Окт. 29, 2022
Waste
and
wastewater
containing
hydrocarbons
are
produced
worldwide
by
various
oil-based
industries,
whose
activities
also
contribute
to
the
occurrence
of
oil
spills
throughout
globe,
causing
severe
environmental
contamination.
Anaerobic
microorganisms
with
ability
biodegrade
petroleum
important
in
treatment
contaminated
matrices,
both
situ
deep
subsurfaces,
or
ex
bioreactors.
In
latter,
part
energetic
value
these
compounds
can
be
recovered
form
biogas.
degradation
improved
iron
compounds,
but
different
species
exert
distinct
effects.
For
example,
Fe(III)
used
as
an
electron
acceptor
microbial
hydrocarbon
degradation,
zero-valent
donate
electrons
for
enhanced
methanogenesis,
conductive
oxides
may
facilitate
transfers
methanogenic
processes.
Iron
act
adsorbents,
involved
secondary
abiotic
reactions,
overall
promoting
biodegradation.
These
multiple
roles
comprehensively
reviewed
this
paper
linked
key
functional
processes,
underlying
mechanisms,
main
influential
factors.
Recent
research
progress,
future
perspectives,
remaining
challenges
on
application
iron-assisted
anaerobic
highlighted.
Nanoscale Advances,
Год журнала:
2023,
Номер
6(1), С. 51 - 71
Опубликована: Ноя. 9, 2023
The
world
faces
threats
that
the
United
Nations
has
classified
into
17
categories
with
different
objectives
as
solutions
for
each
challenge
are
enclosed
in
Sustainable
Development
Goals
(SDGs).
These
actions
involved
widespread
use
of
science
and
technology
pathways
to
ensure
their
implementation.
In
this
regard,
sustainability
seeks
research
community's
contribution
addressing
sustainable
development
challenges.
Specifically,
nanotechnology
been
recognized
a
key
tool
provide
disruptive
effective
strategies
reach
SDGs.
This
review
proposes
application
bimetallic
nanoparticle
substances
capable
providing
possible
achieve
target
SDG
3:
good
health
well-being,
6:
clean
water
sanitation,
12:
responsible
consumption
production.
Furthermore,
term
green
is
introduced
section
exemplify
how
synthesized
nanoparticles
have
used
resolve
SDG.
also
outlines
current
scenario
regarding
utilization
metallic
nanomaterials
market,
together
upscaling
challenges
lack
understanding
long-term
effects
hazards
environment
nanoparticles.
Abstract
Background
Massive
amounts
of
sewage
sludge
are
generated
during
biological
treatment
and
commonly
subjected
to
anaerobic
digestion,
land
application,
landfill
disposal.
Concurrently,
persistent
organic
pollutants
(POPs)
frequently
found
in
disposal
systems,
posing
significant
risks
both
human
health
wildlife.
Metabolically
versatile
microorganisms
originating
from
inevitably
introduced
potentially
affecting
the
fate
POPs.
However,
there
is
currently
a
dearth
comprehensive
assessments
regarding
capability
microbiota
geographically
disparate
regions
attenuate
POPs
underpinning
microbiomes.
Results
Here
we
report
global
prevalence
organohalide-respiring
bacteria
(OHRB)
known
for
their
capacity
sludge,
with
an
occurrence
frequency
~50%
investigated
samples
(605
1186).
Subsequent
laboratory
tests
revealed
microbial
reductive
dechlorination
polychlorinated
biphenyls
(PCBs),
one
most
notorious
categories
POPs,
80
out
84
microcosms
via
various
pathways.
Most
chlorines
were
removed
para
-
meta
-positions
PCBs;
nevertheless,
ortho
-dechlorination
PCBs
also
occurred
widely,
although
lower
extents.
Abundances
several
well-characterized
OHRB
genera
(
Dehalococcoides
,
Dehalogenimonas
Dehalobacter
)
uncultivated
Dehalococcoidia
lineages
increased
incubation
positively
correlated
PCB
dechlorination,
suggesting
involvement
dechlorinating
PCBs.
The
previously
identified
dehalogenase
(RDase)
genes
pcbA4
pcbA5
tended
coexist
microcosms,
but
low
ratios
these
RDase
abundance
indicated
existence
undescribed
RDases
sludge.
Microbial
community
analyses
positive
correlation
between
biodiversity
activity
was
apparent
threshold
co-occurrence
network
complexity
beyond
which
decreased.
Conclusions
Our
findings
that
exhibited
nearly
ubiquitous
indicate
widespread
nonnegligible
impacts
on
systems.
diverse
suggests
as
alternative
source
obtain
POP-attenuating
consortia
calls
further
exploration
populations
Frontiers in Microbiology,
Год журнала:
2022,
Номер
13
Опубликована: Дек. 22, 2022
Trichloroethylene
(TCE)
is
a
ubiquitous
chlorinated
aliphatic
hydrocarbon
(CAH)
in
the
environment,
which
Group
1
carcinogen
with
negative
impacts
on
human
health
and
ecosystems.
Based
series
of
recent
advances,
environmental
behavior
biodegradation
process
TCE
need
to
be
reviewed
systematically.
Four
main
processes
leading
by
isolated
bacteria
mixed
cultures
are
anaerobic
reductive
dechlorination,
cometabolic
dichlorination,
aerobic
co-metabolism,
direct
oxidation.
More
attention
has
been
paid
co-metabolism
TCE.
Laboratory
field
studies
have
demonstrated
that
bacterial
isolates
or
containing
Dehalococcoides
Dehalogenimonas
can
catalyze
dechlorination
ethene.
The
mechanisms,
pathways,
enzymes
were
reviewed,
factors
affecting
discussed.
Besides,
research
progress
material-mediated
enhanced
technologies
through
combination
zero-valent
iron
(ZVI)
biochar
microorganisms
was
introduced.
Furthermore,
we
current
applications,
finally
provided
development
prospects
based
existing
challenges.
We
hope
this
review
will
provide
guidance
specific
recommendations
for
future
CAHs
laboratory
applications.
