ACS ES&T Engineering,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 8, 2024
Thiosulfate-assisted
anaerobic
fermentation
(AF)
effectively
converts
waste
activated
sludge
into
high-value
products
(e.g.,
short-chain
fatty
acids
(SCFAs)).
However,
the
roles
of
thiosulfate
in
organics
transformation,
electron
transfer,
and
microbial
interactions
within
AF
systems
are
not
fully
understood,
especially
under
long-term
operations.
In
this
study,
an
88
day
experiment
was
conducted
to
address
knowledge
gap.
The
results
indicated
average
SCFA
yield
3625.1
mg
COD/L
acetate
proportion
49.4%
with
a
dosage
600
S/L.
Model
organic
degradation
tests
revealed
that
functioned
as
acceptor,
facilitating
NAD+/NADH
stimulating
expression
protein
complexes
like
cytochrome
c
enhance
transport,
lowering
thermodynamic
barriers
propionate
butyrate
(ΔG1propionate
=
−335.0
kJ/mol;
ΔG2butyrate
−113.8
kJ/mol).
Molecular
ecological
networks
analysis
showed
strengthened
cooperative
relationships
among
biomarkers
hydrolytic
bacteria
(i.e.,
Proteiniphilum,
UBA5851),
acidogenic
UBA4179),
sulfur
reducers
JAEUSI01).
Functional
gene
using
random
forest
confirmed
upregulated
key
genes
2-oxoacid
ferredoxin
oxidoreductase)
associated
transfer
metabolism.
This
study
deepens
our
understanding
thiosulfate,
strengthening
cooperation
systems.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
932, P. 172915 - 172915
Published: May 6, 2024
The
increasing
trend
regarding
the
use
of
plastics
has
arisen
an
exponential
concern
on
fate
their
derived
products
to
environment.
Among
these
derivatives,
microplastics
and
nanoplastics
(MNPs)
have
been
featured
for
associated
environmental
impact
due
low
molecular
size
high
surface
area,
which
prompted
ubiquitous
transference
among
all
interfaces.
Due
heterogenous
chemical
composition
MNPs,
study
particles
focused
a
number
studies,
as
result
myriad
physicochemical
properties
that
contribute
co-transference
wide
range
contaminants,
thus
becoming
major
challenge
scientific
community.
In
this
sense,
both
primary
secondary
MNPs
are
well-known
be
adscribed
industrial
urbanized
areas,
from
they
massively
released
environment
through
multiscale
level,
involving
atmosphere,
hydrosphere,
lithosphere.
Consequently,
much
research
conducted
understanding
interconnection
between
those
interfaces,
motivate
spread
contaminants
biological
systems,
being
mostly
represented
by
biosphere,
especially
phytosphere
and,
finally,
anthroposphere.
These
findings
highlighted
potential
hazardous
risk
human
health
different
mechanisms
environment,
requiring
deeper
approach
define
real
exposure.
As
result,
there
is
gap
knowledge
high-throughput
perspective.
review,
metabolomics-based
overview
interfaces
was
proposed,
considering
technology
highly
valuable
tool
decipher
opening
novel
perspective
contaminants.
