Enhancement of Biochar Carbon Sequestration Through Mineral Regulation: Effects and Mechanisms
Agronomy,
Год журнала:
2025,
Номер
15(4), С. 943 - 943
Опубликована: Апрель 12, 2025
The
conversion
of
waste
biomass
into
biochar
through
inert
pyrolysis
represents
a
promising
strategy
for
carbon
sequestration.
However,
production
is
often
accompanied
by
the
release
small
molecular
chemical
substances
during
pyrolysis,
and
resulting
susceptible
to
environmental
degradation.
To
enhance
retention
rate
its
stability
in
environment,
this
study
explored
incorporation
various
metal
soluble
salts
(CaCl2,
Ca(H2PO4)2,
MgCl2,
FeCl3)
clay
minerals
(quartz,
goethite,
bentonite,
albite)
with
two
types
(phragmites
goldenrod)
pre-treatment
both
biochar.
Furthermore,
elucidate
regulatory
mechanisms
on
structural
formation,
three
primary
components
raw
biomass—hemicellulose,
cellulose,
lignin—were
individually
mixed
at
ratio
1:5
(mineral/biomass,
w/w)
produce
biochars
comparative
analysis.
experimental
results
demonstrated
that
salts,
particularly
exhibited
superior
performance
enhancing
biochar’s
compared
minerals.
Specifically,
Ca(H2PO4)2
treatment
resulted
remarkable
15%
increase
rate.
Through
K2Cr2O7
oxidation
simulating
soil
aging
conditions,
Ca(H2PO4)2-treated
showed
approximately
12%
greater
than
untreated
samples.
This
enhanced
was
primarily
attributed
formation
stable
bonds
(C–O–P
P–O),
which
facilitated
preservation
aromatic
structures
compounds
including
sugars,
alcohols,
ethers.
Mechanistic
investigations
revealed
significantly
influenced
process
increasing
activation
energy
from
85.9
kJ
mol−1
156.5
introducing
reaction
complexity.
During
initial
stage
(<300
°C),
catalyzed
depolymerization,
ring-opening,
C–C
bond
cleavage
hemicellulose,
cellulose
side-chain
lignin
phenylpropanes.
In
intermediate
temperature
range
(300–400
carboxylate
nucleophilic
addition
reactions
promoted
cyclization
form
structures.
innovative
aspect
work
can
yield
it
reveals
underlying
improvements
providing
scientific
basis
theoretical
foundation
better
displaying
sequestration
potential
future
applications.
Язык: Английский
Leather Waste to Energy: Environmental Benefits. A Review
Chemistry & Chemical Technology,
Год журнала:
2025,
Номер
19(1), С. 131 - 140
Опубликована: Март 25, 2025
This
review
outlines
the
main
approaches
to
developing
energy
recovery
processes
from
leather
waste.
It
discusses
challenges
and
opportunities
for
accelerating
utilization
of
solid
waste
biofuel
production
considers
promising
methods
processing
biomass,
chromium
waste,
sewage
sludge,
fat
into
bioenergy
feedstocks.
Язык: Английский
Effect of Pyrolysis Temperature on the Carbon Sequestration Capacity of Spent Mushroom Substrate Biochar in the Presence of Mineral Iron
Molecules,
Год журнала:
2024,
Номер
29(23), С. 5712 - 5712
Опубликована: Дек. 3, 2024
The
preparation
of
biochar
typically
involves
the
pyrolysis
waste
organic
biomass.
Iron-rich
magnetic
not
only
inherits
characteristics
high
specific
surface
area
and
porous
structure
from
but
also
possesses
significant
advantages
in
easy
separation
recovery,
which
has
shown
great
application
potential
various
fields
such
as
soil
improvement
water
resource
remediation.
This
study
aims
to
explore
influence
mineral
iron
on
carbon
sequestration
capability
during
process.
Experiments
were
conducted
by
using
spent
mushroom
substrates
raw
materials
prepare
at
different
temperature
intervals
(300
600
°C).
addition
exogenous
been
found
significantly
enhance
retention
rate
(12.2-44.5%)
across
temperatures
and,
notably,
improves
stability
300
°C,
400
°C.
Through
analysis
thermogravimetric
mass
spectrometry
(TG-MS)
X-ray
photoelectron
spectroscopy
(XPS),
we
discovered
that
catalyzes
thermochemical
reactions
inhibits
release
small
molecules
(C
Язык: Английский