ACS ES&T Engineering,
Journal Year:
2024,
Volume and Issue:
4(10), P. 2506 - 2519
Published: Aug. 13, 2024
Enhancing
the
anaerobic
digestion
(AD)
of
organic
wastes
has
been
a
widely
discussed
topic.
This
study
aims
to
enhance
AD
performance
by
combining
microaeration
with
conductive
or
nonconductive
carriers,
using
food
waste
as
substrate.
The
use
carriers
alone
enhanced
methane
production,
and
further
improved
performance.
carrier
showed
significant
enhancement
microaeration,
achieving
daily
yield
478
±
11.3
mL
CH4/g
VS,
which
was
1.1
1.3
times
higher
than
that
control
digester,
respectively.
Furthermore,
explored
various
aspects,
including
oxidative
stress,
antioxidant
capacity,
microbial
community
structure
during
digestion.
results
demonstrated
hydrolytic-acidification
efficiency
promoted
direct
interspecies
electron
transfer
among
syntrophic
microorganisms.
Methanogenic
archaea
aggregated
on
surface
formed
consortia
facultative
anaerobes,
thereby
mitigating
stress
effects
cells
enhancing
total
production.
Moreover,
metabolomics
analysis
ATP
transport
across
bacterial
membrane,
accelerated
nutrient
conversion,
caused
changes
in
metabolites
intermediates
related
glycerophospholipids,
amino
acids,
signal
transduction
pathways.
TrAC Trends in Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
174, P. 117667 - 117667
Published: March 25, 2024
Microplastics
(MPs),
miniscule
plastic
particles
measuring
less
than
5
mm
in
size,
have
become
a
concern
terrestrial
ecosystems,
with
primarily
agricultural
and
wetland
soils
being
the
highest
loadings.
The
adverse
effect
of
MPs
might
lead
to
changes
physicochemical
biological
characteristics
soil
including
properties,
microbial
communities,
plants,
as
well
potential
or
affirmed
correlations
among
them.
Therefore,
understanding
risks
effects
MPs,
particularly
within
soil-plant-microbe
context
is
challenging
subject
substantial
scientific
inquiry.
This
comprehensive
review
focused
on
rhizosphere
plant-microbe
symbiotic
relationships,
implications
for
plant
growth
ecosystem-level
nutrient
fluxes.
alter
community
composition,
enzymatic
activities
rhizosphere,
influencing
availability
uptake
by
plants.
These
can
disrupt
interactions,
such
mycorrhizal
associations
nitrogen-fixing
symbioses,
ultimately
impacting
cycling
nutrients
ecosystems.
Furthermore,
we
elaborate
relationships
carrying
Future
research
directions
solutions
microplastics
menace
acknowledging
combined
other
contaminants,
advanced
technologies
identification
quantification,
engineering
remediation.
knowledge
MPs-induced
impacts
interactions
essential
generate
mitigating
actions
environmental
management
conservation.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 27, 2024
Abstract
Previous
studies
reported
microplastics
(MPs),
antibiotics,
and
antibiotic
resistance
genes
(ARGs)
in
wastewater
treatment
plants
(WWTPs).
There
is
still
a
lack
of
research
progress
on
the
origin,
fate,
impact
hazards
MPs
ARGs
WWTPs.
This
paper
fills
gap
this
regard.
In
our
search,
we
used
“microplastics”,
“antibiotic
genes”,
“wastewater
plant”
as
topic
terms
Web
Science,
checking
returned
results
for
relevance
by
examining
titles
abstracts.
study
mainly
explores
following
points:
(1)
origins
fate
MPs,
antibiotics
WWTPs;
(2)
mechanisms
action
sludge
biochemical
pools;
(3)
impacts
WWTPs
spread
ARGs;
(4)
harm
inflicted
environment
human
body.
Contaminants
sewage
such
ARGs,
antibiotic-resistant
bacteria
enter
soil
water.
can
travel
through
food
chain
thus
reach
humans,
leading
to
increased
illness,
hospitalization,
even
mortality.
will
enhance
understanding
among
they
inflict
Environmental Science and Ecotechnology,
Journal Year:
2024,
Volume and Issue:
21, P. 100440 - 100440
Published: June 13, 2024
Anaerobic
digestion
(AD)
plays
a
significant
role
in
renewable
energy
recovery.
Upgrading
AD
from
thermophilic
(50–57
°C)
to
mesophilic
(30–38
conditions
enhance
process
stability
and
reduce
input
remains
challenging
due
the
high
sensitivity
of
microbiomes
temperature
fluctuations.
Here
we
compare
effects
two
decreasing-temperature
modes
55
35
°C
on
cell
viability,
microbial
dynamics,
interspecies
interactions.
A
sharp
transition
(ST)
is
one-step
by
20
d−1,
while
mild
(MT)
stepwise
1
d−1.
We
find
greater
decrease
methane
production
with
ST
(88.8%)
compared
MT
(38.9%)
during
period.
mode
overproduced
reactive
oxygen
species
1.6-fold,
increased
membrane
permeability
2.2-fold,
downregulated
metabolism
25.1%,
leading
apoptosis
anaerobes
1.9-fold
release
intracellular
substances
2.9-fold,
further
constraining
methanogenesis.
The
higher
(1.6
vs.
1.1
copies
per
gyrA)
metabolic
activity
acetate-dependent
methanogenesis
implied
more
efficient
steady
mesophilic,
MT-mediated
system.
Metagenomic
binning
network
analyses
indicated
that
induced
dysbiosis
keystone
greatly
enhanced
functional
redundancy,
causing
loss
syntrophic
interactions
redundant
pathways.
In
contrast,
interconnections
(average
degrees
44.9
22.1)
at
state
suggested
could
better
maintain
necessary
system
functionality
through
syntrophy
or
specialized
Adopting
transform
digesters
into
feasible
potentially
optimization
broader
application
practical
anaerobic
engineering.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
273, P. 116153 - 116153
Published: Feb. 28, 2024
Microplastics
have
emerged
as
significant
and
concerning
pollutants
within
soil
ecosystems.
Among
the
biota,
entomopathogenic
nematodes
(EPNs)
are
lethal
parasites
of
arthropods,
considered
among
most
effective
biological
agents
against
pests.
Infective
juveniles
(IJs)
EPNs,
they
navigate
matrix
scavenging
for
arthropod
hosts
to
infect,
could
potentially
encounter
microplastics.
Howver,
impact
microplastics
on
EPNs
has
not
been
fully
elucidated
yet.
We
addressed
this
gap
by
subjecting
Steinernema
feltiae
polystyrene
(PS-MPs)
with
various
sizes,
concentrations,
exposure
durations.
After
confirming
PS-MP
ingestion
S.
using
fluorescent
dyes,
we
found
that
PS-MPs
reduced
survival,
reproduction,
pathogenicity
tested
effects
intensifying
smaller
(0.1-1
μm)
at
higher
concentrations
(10
