Chemosphere,
Journal Year:
2024,
Volume and Issue:
361, P. 142419 - 142419
Published: May 22, 2024
In
light
of
the
substantial
global
production
biomass
waste,
effective
waste
management
and
energy
recovery
solutions
are
paramount
importance.
Hydrothermal
liquefaction
(HTL)
anaerobic
digestion
(AD)
have
emerged
as
innovative
techniques
for
converting
into
valuable
resources.
Their
integration
creates
a
synergistic
framework
that
mitigates
inherent
limitations,
leading
to
improved
efficiency,
enhanced
product
quality,
comprehensive
utilization
biomass.
This
review
paper
investigates
HTL
AD,
highlighting
its
significance
potential
benefits
well
optimal
sequencing
(HTL
followed
by
AD
HTL).
The
encompasses
experimental
procedures,
factors
influencing
both
options,
characterizations,
final
outcomes,
toxicological
assessments
discussions
on
reduction.
Additionally,
it
delves
transition
towards
circular
bioeconomy
discusses
challenges
opportunities
intrinsic
these
processes.
findings
presented
in
this
offer
insights
shape
future
research
evolving
field.
Water Research,
Journal Year:
2024,
Volume and Issue:
257, P. 121703 - 121703
Published: May 2, 2024
Hydrothermal
liquefaction
(HTL)
is
a
promising
thermo-chemical
technology
for
municipal
sludge
treatment
due
to
its
potential
biocrude
oil
recovery
and
minimizing
biosolids
management
costs.
However,
the
process
generates
high
volume
of
an
aqueous
byproduct
that
needs
be
treated
chemical
oxygen
demand
(COD)
various
organic
inorganic
compounds.
Although
phase
known
contain
recalcitrant
potentially
inhibitory
substances
may
affect
biological
treatment,
their
molecular
weight
distribution
(MwD)
impact
on
anaerobic
biodegradability
are
poorly
understood.
Ultrafiltration
(UF)
was
conducted
fractionate
HTL
into
different
(Mw)
fractions
using
300,
100,
10,
1
kDa
membranes.
Mesophilic
biochemical
methane
(BMP)
assays
were
assess
each
fraction,
first-order
model
used
calculate
degradation
kinetics
The
highest
percentage
organics
(65%)
found
in
Mw<1
range,
whereas
10>Mw>1
had
lowest
(8%).
There
no
significant
difference
cumulative
specific
produced
from
Mw
(p>0.05).
fraction
production
rate
(0.53
day−1),
unfiltered
(0.38
day−1).
UF
fractionation
increased
observed
only
55%
theoretical
value.
This
implies
45
%
COD
remains
undegraded
even
after
permeation
through
cut-off
membrane.
Therefore,
further
characterization
needed
compounds
with
weights
below
fully
understand
nature
digestion.
Furthermore,
pretreatments
utilizing
techniques
such
as
adsorption
advanced
oxidation
necessary
enhance
yields
fractions,
thereby
bringing
them
closer
yield.
Petroleum Science and Technology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 19
Published: Jan. 5, 2025
To
produce
high-quality
slurry
fuel
from
petroleum
coke
and
municipal
sludge,
the
effects
of
various
biomass
materials
on
characteristics
were
investigated
experimentally.
The
used
in
this
experiment
classified
into
three
categories:
monosaccharides
(e.g.,
glucose),
starch-based
potato
residue),
cellulose-based
corn
straw,
water
hyacinth,
rice
husk,
kelp).
results
revealed
significant
variations
properties
influenced
by
different
types
their
respective
proportions.
Increasing
content
led
to
a
decrease
solid
concentration
bubble
sludge
(bubble-PCSS).
However,
reduction
was
moderate
with
biomass,
whereas
it
pronounced
especially
kelp.
addition
significantly
improved
pseudoplastic
rheological
slurry.
Specifically,
when
incorporated,
flow
characteristic
index
approached
0.7.
Optimal
stability
bubble-PCSS
achieved
at
2%
level
biomass.
In
contrast,
using
such
as
kelp,
husks,
they
required
3-4%
reach
optimal
stability,
which
somewhat
less
favorable
than
that
