The
alarming
increase
in
the
concentration
of
carbon
dioxide
(CO2)
atmosphere,
mainly
due
to
human
emissions,
represents
a
significant
threat
life.
In
this
context,
capture
and
storage
(CCS)
technologies
have
emerged
as
promising
solutions,
such
adsorption
on
carbonaceous
materials,
standing
out
prominent
approach.
This
study
aims
quantify
maximum
CO2
laboratory
scale
using
functionalized
activated
by
passion
fruit
peel
biomass
(FACPFP)
develop
simple
improved
machine
learning
model
predict
greenhouse
gas.
FACPFP
was
successfully
prepared
through
chemical
activation
with
K2C2O4
doping
ethylenediamine
(EDA)
at
700
°C
1
hour.
samples
were
thoroughly
characterized
thermogravimetric
analysis
(TGA),
scanning
electron
microscopy
(SEM)
energy
dispersive
X-ray
detector
(EDX),
Fourier
transform
infrared
spectroscopy
(FTIR)
photoelectron
(XPS).
sorption
assessed
functional
density
theory
(DFT).
For
predictive
model,
multiple
linear
regression
cross-validation
used.
Under
atmosphere
conditions,
textural
parameters
allowed
see
probable
presence
ultra-micropores,
BET
surface
area,
total
pore
micropore
volume
105
m²/g,
0.03
cm³/g
0.06
cm³/g,
respectively.
capacity
reached
about
2.2
mmol/g
0°C
bar.
demonstrated
an
improvement
precision,
raising
it
from
53%
61%
cross-validation.
also
stimulate
future
investigations
area
capture,
extreme
relevance
topic.
Journal of CO2 Utilization,
Journal Year:
2024,
Volume and Issue:
80, P. 102680 - 102680
Published: Jan. 25, 2024
The
alarming
increase
in
the
concentration
of
carbon
dioxide
(CO2)
atmosphere,
mainly
due
to
human
emissions,
represents
a
significant
threat
life.
In
this
context,
capture
and
storage
(CCS)
technologies
have
emerged
as
promising
solutions,
such
adsorption
on
carbonaceous
materials,
standing
out
prominent
approach.
This
study
aims
quantify
maximum
CO2
laboratory
scale
using
functionalized
activated
by
passion
fruit
peel
biomass
(FACPFP)
develop
simple
improved
machine
learning
model
predict
greenhouse
gas.
FACPFP
was
successfully
prepared
through
chemical
activation
with
K2C2O4
doping
ethylenediamine
(EDA)
at
700
°C
1
h.
samples
were
thoroughly
characterized
thermogravimetric
analysis
(TGA),
scanning
electron
microscopy
(SEM)
energy
dispersive
X-ray
detector
(EDX),
Fourier
transform
infrared
spectroscopy
(FTIR)
photoelectron
(XPS).
sorption
assessed
functional
density
theory
(DFT).
For
predictive
model,
multiple
linear
regression
cross-validation
used.
Under
atmosphere
conditions,
textural
parameters
allowed
see
probable
presence
ultra-micropores,
BET
surface
area,
total
pore
micropore
volume
105
m²/g,
0.03
cm³
/g
0.06
/g,
respectively.
capacity
reached
about
2.2
mmol/g
0
bar.
demonstrated
an
improvement
precision,
raising
it
from
53%
61%
cross-validation.
also
stimulate
future
investigations
area
capture,
extreme
relevance
topic.
Journal of Cleaner Production,
Journal Year:
2024,
Volume and Issue:
469, P. 143136 - 143136
Published: July 14, 2024
Annually,
industries
related
to
agricultural
products
generate
substantial
volumes
of
waste
biomass,
presenting
critical
challenges
for
solid
management
due
its
environmental
and
health
implications.
Pyrolysis
emerges
as
a
significant
technique
converting
such
into
biochar
(BC),
material
with
notable
internal
microstructure,
porosity,
chemical
properties,
contingent
on
the
feedstock
processing
conditions.
BC
is
recognized
exceptional
water
retention
alkalinity,
primarily
utilized
soil
enhancement
fertilization.
Its
application
across
various
fields,
particularly
in
sustainability,
has
gained
momentum.
This
review
meticulously
explores
BC's
role
sustainable
composites,
focusing
geopolymers
alkali-activated
binders
through
comprehensive
examination
existing
literature,
underscored
by
bibliometric
analysis.
pioneering
review,
leveraging
PRISMA
framework
VOSviewer
insights,
aims
bridge
research
gap
this
evolving
domain,
offering
assessment
integration
construction
materials,
challenges,
future
directions.
Hence,
systematic
represents
first-ever
exploration
within
domain
applications
marking
foundational
step
toward
understanding
potential
engineering
practices.
Materials,
Journal Year:
2025,
Volume and Issue:
18(3), P. 486 - 486
Published: Jan. 21, 2025
The
addition
of
biochar
to
Portland
cement
composites
has
been
proven
increase
some
the
material
properties.
effect
on
alkali-activated
materials
not
fully
investigated.
In
this
study,
different
recipes
metakaolin
pastes
at
amounts
are
tested.
Their
physical
and
mechanical
properties
analyzed
understand
if
any
beneficial
effects
can
be
found
even
for
binders.
results
show
that
small
(<2
wt%)
increases
compressive
strength
(+15%
after
28
days)
decreases
water
absorption
by
capillarity,
possibly
leading
increased
durability.
Higher
content
but
provides
higher
dimensional
stability
reduces
formation
efflorescence.
Macromolecular Chemistry and Physics,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 2, 2025
Abstract
Lignin
has
a
high
carbon
content,
but
the
production
of
porous
materials
from
it
is
challenging
because
its
complex
structure
and
stable
physicochemical
properties.
In
this
study,
nitrogen‐doped
are
prepared
by
impregnating
lignin
with
urea,
using
potassium
hydroxide
(KOH)
as
an
activator.
The
properties
samples
investigated
various
characterization
methods.
results
showed
that
CO
2
adsorption
capacity
sample
LUN‐10‐7,
which
urea
solution
concentration
10%
immersion
time
7
days,
3.80
mmol
g
−1
at
1
bar
298
K.
indicated
abundant
pore
excellent
surface
chemistry
enhanced
sample's
performance.
Additionally,
demonstrated
/N
selectivity
cyclic
stability,
making
suitable
for
practical
applications
adsorbent.
This
study
successfully
synthesized
microporous
nitrogen-doped
biomass
porous
carbon
(NPSCs)
through
a
two-step
method,
utilizing
cost-effective
peanut
shells
as
the
source,
urea
nitrogen
and
CH3COOK
activating
agent.
By
optimizing
ratio
of
agent
carbonization
temperature,
pore
structure
surface
chemical
properties
NPSCs
were
effectively
tailored.
Characterization
results
revealed
that
exhibited
significant
number
micropores,
attributed
to
critical
etching
effect
CH3COOK.
The
optimal
sample,
NPSC-2-700,
demonstrated
specific
area
1455.41
m2/g
micropore
volume
0.57
cm3/g.
Notably,
NPSC-2-700
achieved
remarkable
CO2
adsorption
capacities
3.91
5.90
mmol/g
at
25
0
°C,
respectively,
under
1
bar.
Additionally,
maintained
exceptional
performance
even
after
ten
consecutive
adsorption–desorption
cycles.
selectivity
was
calculated
be
43
using
ideal
solution
theory
in
classic
gas
mixture
(CO2/N2
=
15
vol
%:85
%),
demonstrating
good
dynamic
capture
capacity.
These
findings
underscore
promising
potential
materials
for
efficient
applications.
