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.
Environmental Research,
Journal Year:
2023,
Volume and Issue:
245, P. 118062 - 118062
Published: Dec. 27, 2023
Hydrothermal
carbonization
(HTC)
is
considered
a
promising
technology
for
biomass
waste
management
without
pre-drying.
This
study
explores
the
potential
swine
manure
by
comparing
batch
and
continuous
processes,
emphasizing
benefits
of
mode,
particularly
its
full-scale
application.
The
process
at
low
temperature
(180
°C)
resulted
in
hydrochar
with
lower
degree
compared
to
process,
but
similar
characteristics
were
found
both
hydrochars
higher
operating
temperatures
(230-250
°C),
such
as
C
content
(∼
52
wt%),
fixed
carbon
24
wt%)
calorific
value
(21
MJ
kg
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.
