Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Дек. 4, 2023
Abstract
Oxyfluorination
treatment
was
used
to
enhance
the
capacity
for
adsorption
of
tetracycline
(TC)
from
aqueous
systems
by
activated
carbon
(AC).
The
AC
oxyfluorinated
at
room
temperature
5
min
in
a
batch
reactor,
and
ratio
O
2
F
gas
as
variable.
oxyfluorination
increased
oxygen
functional
group
content
on
up
23.0%.
specific
surface
area
decreased
31.7%,
micropore
volume
30.6%
due
strong
etching
fluorine
radicals.
AC-O7F3
with
23.0
at%
showed
best
TC
performance
because
number
groups
enabled
hydrogen
bonding.
However,
AC-O5F5
sample
treated
high
partial
pressure
poor
adsorption,
which
attributed
collapse
pore
structure
decrease
perfluorination.
Meanwhile,
process
pseudosecond-order
kinetics
good
fit
Langmuir
model.
Water,
Год журнала:
2025,
Номер
17(5), С. 733 - 733
Опубликована: Март 3, 2025
Cationic
dyes
pose
potential
health
risks
to
humans
due
their
higher
toxicity
levels.
Most
current
research
focuses
on
the
utilization
of
biomass
waste
in
preparation
multifunctional
materials
mitigate
adverse
impact
cationic
dye
wastewater
environment.
However,
conventional
methods
biochar
require
elevated
pyrolysis
temperatures
and
greater
energy
consumption.
Accordingly,
this
study
aims
investigate
effectiveness
removal
methylene
blue
(MB)
from
simulated
using
a
one-step
phosphoric
acid
activation
hydrothermal
carbonization
technique.
SEM,
BET,
XRD,
FTIR,
XPS
analyses
were
conducted
surface
morphology
chemical
composition
pine
sawdust
(PS)
as
raw
material,
with
carbon
(HTC-PS),
acid-activated
(PHTC-PS).
The
results
demonstrate
that
PHTC-PS
exhibits
maximum
adsorption
capacity
268.4
mg/g
for
MB
at
298
K.
experimental
data
its
consistency
through
both
Langmuir
isotherm
model
pseudo-second-order
kinetic
model,
suggesting
mechanism
predominantly
involves
monolayer
formation
interactions.
Additionally,
thermodynamic
parameters
reveal
is
spontaneous
endothermic
reaction.
Thus,
demonstrates
method
can
achieve
satisfactory
efficiency
advantages
lower
consumption,
simplicity
operation,
mild
conditions.
Bioresources and Bioprocessing,
Год журнала:
2024,
Номер
11(1)
Опубликована: Июль 3, 2024
Abstract
Integrating
innovation
and
environmental
responsibility
has
become
important
in
pursuing
sustainable
industrial
practices
the
contemporary
world.
These
twin
imperatives
have
stimulated
research
into
developing
methods
that
optimize
processes,
enhancing
efficiency
effectiveness
while
mitigating
undesirable
ecological
impacts.
This
objective
is
exemplified
by
emergence
of
biochar
derived
from
thermo-chemical
transformation
biomass.
review
examines
production
their
potential
applications
across
various
aspects
iron
steel
industries
(ISI).
The
technical,
economic,
implications
integrating
ISI
were
explored.
Slow
pyrolysis
hydrothermal
carbonization
are
most
efficient
for
higher
yield
(25–90%).
Biochar
several
advantages-
heating
value
(30–32
MJ/kg),
more
porosity
(58.22%),
significantly
larger
surface
area
(113
m
2
/g)
compared
to
coal
coke.
However,
presence
often
reduces
fluidity
a
coal-biochar
mixture.
findings
highlighted
implementation
come
with
costs,
primarily
due
expense
substitute
fuels
traditional
fossil
fuels.
economic
viability
societal
desirability
highly
uncertain
vary
based
on
factors
such
as
location,
feedstock
type,
scale,
pricing,
among
others.
Furthermore,
biomass
supply
chain
another
factor
which
determines
its
large
scale
implementation.
Despite
these
challenges,
there
opportunities
reduce
emissions
BF-BOF
operations
utilizing
technologies.
Overall,
present
study
explored
diverse
aiming
contribute
ongoing
manufacturing
practices,
underscoring
significance
shaping
environmentally
conscious
future.
Separations,
Год журнала:
2024,
Номер
11(3), С. 79 - 79
Опубликована: Март 2, 2024
This
study
investigates
lyocell-based
activated
carbon
fibers
(ACFs)
for
their
suitability
in
adsorbing
and
electrochemically
detecting
toxic
HCl
gas.
ACFs
were
prepared
via
steam
activation,
varying
temperature
(800–900
°C)
time
(40–240
min)
to
assess
adsorption
sensing
capabilities.
The
adjustment
of
activation
reaction
aimed
regulate
the
uniformity
pore
structure
size
active
area,
as
well
number
sites
ACFs.
Optimal
achieved
at
900
°C
50
min,
exhibiting
highest
specific
surface
area
(1403
m2/g)
total
volume
(0.66
cm3/g).
Longer
times
resulted
formation
disorder,
reducing
mechanical
strength.
under
optimal
conditions
demonstrated
a
rapid
increase
resistance
during
sensor
measurement,
indicating
significant
sensitivity
These
findings
suggest
potential
efficient
gas
(1626.20
mg/g)
highlight
importance
parameters
tailoring
properties
practical
applications.
