bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 11, 2024
Abstract
Hydrothermal
liquefaction
(HTL)
can
convert
a
considerable
portion
of
the
carbon
in
complex
feedstocks
into
renewable
bio-oil,
but
it
also
generates
liquid
byproduct
(
i.e.
,
HTL
process
water)
that
retains
15
–
55%
from
feedstock.
Feeding
water
to
anaerobic
digestion
(AD)
is
promising
approach
for
maximizing
resource
recovery,
enabling
conversion
retained
biogas.
However,
various
toxic
and
poorly
biodegradable
compounds
make
its
treatment
with
AD
challenging.
Presently,
underlying
mechanisms
remain
often
unclear.
We
investigated
impact
two
different
food-waste
proxy
dog
food,
rich
proteins)
wheat
straw
(rich
lignocellulose)
on
trophic
groups
food
web
AD.
found
methanogens
rather
than
acidogens
were
inhibited
by
water.
Comparative
toxicity
biodegradability
analyses
showed
wheat-straw
had
higher
regardless
acetoclastic
water,
due
content
easily
degradable
aromatic
compounds.
Microaeration
enhanced
biodegradation
methane
yields
particularly
under
anoxic
conditions.
microaeration
was
ineffective
These
findings
highlight
importance
feedstock-specific
strategies
optimize
biogas
production
Sustainability,
Год журнала:
2025,
Номер
17(8), С. 3615 - 3615
Опубликована: Апрель 16, 2025
This
review
focuses
on
the
integration
of
thermochemical
and
biochemical
processes
as
a
transformative
approach
to
biomass
conversion.
By
combining
technologies
such
anaerobic
digestion,
hydrothermal
liquefaction,
pyrolysis,
syngas
fermentation,
this
highlights
how
hybrid
systems
maximize
resource
recovery
improve
energy
efficiency.
Key
examples
include
use
digestate
from
digestion
feedstock
for
pyrolysis
or
carbonization,
enhancing
biochar
hydrochar
production
while
improving
nutrient
recycling.
Similarly,
fermentation
with
gasification
demonstrates
products
can
be
further
valorized
into
biofuels
under
milder
conditions.
also
addresses
reuse
by-products,
aqueous
phase
processes,
in
algae
cultivation,
showcasing
circular
potential
these
systems.
emphasizing
technical
economic
synergies
integrating
diverse
technologies,
paper
outlines
clear
pathway
industrial-scale
adoption,
contributing
sustainable
reduced
greenhouse
gas
emissions.
Journal of Environmental Management,
Год журнала:
2024,
Номер
366, С. 121750 - 121750
Опубликована: Июль 6, 2024
The
study
of
dissolved
organic
matter
(DOM)
presents
a
significant
challenge
for
environmental
analyses
and
the
monitoring
wastewater
treatment
plants
(WWTPs).This
is
particularly
true
tracking
recalcitrant
to
biodegradation
(rDOM)
compounds,
which
generated
during
thermal
pretreatment
sludge.This
aims
develop
analytical
chemometric
methods
differentiate
melanoidins
from
humic
acids
(HAs),
two
components
rDOM
that
require
at
various
stages
processes
due
their
distinct
biological
effects.The
developed
method
implements
separation
macromolecules
through
ultra-high-performance
liquid
chromatography
size-exclusion
(U-HPLC
SEC)
followed
by
online
UV
fluorescence
detection.UV
detection
was
performed
210,
254,
280
nm,
six
excitation/emission
pairs:
230/355
270/355
240/440
270/
500
330/425
390/500
nm.Chromatograms
obtained
each
sample
these
nine
modes
were
integrated
separated
into
four
molecular
fractions:
>40
kDa,
20-40
10-20
<10
kDa.To
enhance
resolution
normalize
data,
ratios
calculated
areas
chromatographic
peaks
mode.The
results
demonstrate
utility
in
discriminating
samples
composed
HAs,
melanoidins,
mixtures,
principal
component
analysis
(PCA).Low
weight
fractions
found
be
specific
while
high
characteristic
HAs.For
absorbance
nm
predominantly
present
numerators,
with
tryptophan-like
emissions
denominators.Conversely,
largely
represented
both
numerators
denominators
HAs.This
also
enables
discrimination
pseudo-melanoidins,
compounds
revealing
nitrogen
deficiency
chemical
structures.
