This
work
studies
the
valorization
of
swine
manure
by
hydrothermal
carbonization
in
batch
and
continuous
mode
(T
180
–
250
ºC,
residence
time
45
min,
5
wt.%
total
solids).
The
process
resulted
a
hydrochar
with
enhanced
degree,
higher
C
content
(50
55
wt.%)
fixed
carbon
(FC:
~
25
increased
calorific
value
(20
-
22
MJ
kg-1),
compared
to
obtained
process.
In
particular,
mass
yield
was
significantly
lower
at
low
temperature
43
wt.%),
being
very
similar
both
processes
highest
temperatures
(~
20
wt.%).
Thermogravimetric
combustion
analysis
showed
that
hydrochars
exhibited
suitable
characteristics
as
solid
biofuels
for
industrial
use.
water
cases
high
organic
matter
soluble
chemical
oxygen
demand
(7
g
L-1)
(4
10
L-1),
although
gave
rise
diversity
aromatic
N-
O-containing
species.
longer
required
reach
operating
case
system
(heating
ramp)
reduced
H/C
(1.07
1.35)
O/C
(0.47
0.64)
ratios
(H/C
1.32
1.54
0.54
0.65),
which
implied
more
important
role
feedstock
dehydration
decarboxylation
reactions.
Molecules,
Journal Year:
2023,
Volume and Issue:
28(11), P. 4429 - 4429
Published: May 30, 2023
Advanced
carbon
nanomaterials
have
been
widely
applied
in
various
fields
such
as
microelectronics,
energy
storage,
catalysis,
adsorption,
biomedical
engineering,
and
material
strengthening.
With
the
increasing
demand
for
porous
nanomaterials,
many
studies
explored
obtaining
from
biomass,
which
is
highly
abundant.
Pomelo
peel,
a
type
of
biomass
rich
cellulose
lignin,
has
upgraded
into
with
large
yield
significant
applications.
Here,
we
systematically
review
recent
progress
pyrolysis,
activation,
applications
synthesizing
waste
pomelo
peels.
Moreover,
provide
perspective
on
remaining
challenges
potential
future
research
directions.
Waste Management,
Journal Year:
2023,
Volume and Issue:
169, P. 267 - 275
Published: July 22, 2023
Co-hydrothermal
carbonization
(co-HTC)
is
a
promising
strategy
to
improve
hydrothermal
(HTC)
of
low-quality
wastes.HTC
swine
manure
(SM),
with
high
N
(2.9
wt%),
S
(0.7
wt%)
and
ash
(22.6
contents,
as
well
low
C
(35.6
higher
heating
value
(HHV;
14.3
MJ
kg
-1
),
resulted
in
hydrochar
unsuitable
characteristics
solid
fuel.Co-HTC
SM
garden
park
waste
(GPW)
improved
properties
(C
content
(43
-48
HHV
(18
-20
decreased
(~2
(<0.3
(<15
content.A
GPW
ratio
(>50
during
co-HTC
similar
that
obtained
from
GPW.The
increased
nutrient
migration
the
process
water,
which
allowed
precipitation
salt
P
(7.8
negligible
heavy
metal
content.Anaerobic
digestion
water
organic
matter
removal
(up
65%),
methane
production
(315
-325
mL
CH
4
g
COD
added
).Gross
energy
recovery
by
HTC
anaerobic
was
5
-6-fold
than
treatment
feedstocks.Therefore,
>
50%
proved
be
suitable
approach
valorize
manage
obtain
value-added
products
(hydrochar,
mineral
fertilizer
methane).
Coatings,
Journal Year:
2025,
Volume and Issue:
15(1), P. 27 - 27
Published: Jan. 1, 2025
Spent
ion
exchange
resins
were
subjected
to
hydrothermal
carbonization
(HTC)
and
physical
activation
produce
adsorbents,
which
tested
for
the
adsorption
of
bisphenol
A
(BPA)
sodium
diclofenac
(DCF)
in
water.
PAHF0.35.WV
PAHF0.50.WV
materials
that
presented
largest
specific
surface
area,
around
200
m2/g.
The
best
performance
was
BPA,
with
an
capacity
24.45
23.34
mg/g.
kinetic
isotherm
models
adjustments
curves
experimental
data
pseudo-second-order
model
Freundlich
model.
maximum
DCF
17.82
mg/g
15
PAHF0.50.WV.
fit
In
isotherms,
Langmuir
fit.
toxicity
study
microalgae
Raphidocelis
subcapitata
did
not
demonstrate
any
toxic
effects
adsorbents.
Material
regeneration
tests
indicated
a
recovery
50%
first
cycle,
from
second
cycle
onwards,
satisfactory.
However,
results
indicate
anionic
resin
residue
has
potential
use
production
activated
hydrocarbons.
