Zeitschrift für Physikalische Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 6, 2024
Abstract
Biodegradable
(green)
materials
have
been
gained
momentous
attention
and
extensively
used
for
environmental
restoration
as
a
result
of
recent
legislations.
The
current
study
involved
treating
Pithecellobium
dulce
seed
pod
(PSD)
powder
with
acetic
acid
to
look
examined
the
possibility
using
treated
P.
(PD)
remove
Reactive
Red
195-A
from
its
aqueous
solution.
material
was
characterized
by
scanning
electron
microscopy
(SEM),
Fourier
transform
infrared
spectroscopy
(FT-IR),
differential
thermal
analysis
(DTA),
thermo
gravimetric
(TGA).
Different
constraining
factors,
such
dye
concentration,
temperature,
contact
time,
solution
pH,
sorbent
dose
were
batch
adsorption
trials.
Further,
Freundlich
Temkin,
alongside
Langmuir
equations
employed
analyze
different
isotherms.
results
showed
that
Temkin
isotherm
found
be
validated
experimental
findings
on
RRD
prepared
adsorbent.
exposed
adsorbing
process
tailed
pseudo-second
order
kinetic
model,
demonstrated
correlation
coefficient
R
2
greater
than
0.90.
According
thermodynamic
investigations,
endothermic
took
place
spontaneously.
suggested
PD
plant
might
cheaper
substitute
chemical
adsorbents
dyes.
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(2), P. 655 - 655
Published: Jan. 12, 2024
The
study
aimed
to
prepare
a
biocomposite
containing
Yarrowia
lipolytica
yeast
cells
with
magnetic
properties.
work
proposes
the
use
of
this
as
sorbent
for
removal
organic
pollutants
like
methylene
blue
from
liquids.
sorption
process
was
conducted
in
periodic
through
which
different
parameters
were
analyzed
such
initial
concentration
(50–250
mg/dm3),
time
(0.167–24
h),
and
temperature
(25–40
°C).
To
fit
experimental
data
theoretical
models,
Langmuir,
Freundlich,
Temkin,
Dubinin–Radushkevich
models
used.
In
addition,
pseudo-first-rate,
pseudo-second-rate
order,
Weber–Morris
Elovich
kinetic
evaluated.
highest
Freundlich
isotherm
model
(R2
=
0.9959
ARE
3.41%)
order
0.9989
1.14%).
It
has
been
shown
that
removing
using
is
exothermic
its
usefulness
decreases
an
increase
(from
32.10
mg/g
23.64
mg/g).
acquire
information
about
material
characteristics,
instrumental
methods
applied:
FTIR,
SEM-EDX,
TGA,
VSM.
This
provides
new
on
possibility
composites
made
biochar,
yeast,
particles
dyes
aqueous
environment.
obtained
effective
contaminants
easily
separated
after
performed
process.
Green Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
10, P. 100135 - 100135
Published: Aug. 4, 2024
The
presence
of
pharmaceuticals
in
water
is
a
major
problem
worldwide.
To
alleviate
this,
this
study
produced
carbon
blends
from
avocado
seeds
and
paper
waste
activated
them
with
hydrogen
peroxide
(H2O2),
nitric
acid
(HNO3)
potassium
permanganate
(KMnO4).
effectiveness
the
adsorbents
was
tested
removing
ibuprofen
(IBU)
paracetamol
(PRC)
water.
Characterization
by
SEM,
BET,
FTIR
TGA
revealed
that
morphology
porous,
large
surface
area
several
functional
groups
bound
to
surface.
concentration
effect
experiments
showed
uptake
IBU
PRC
increased
an
increasing
initial
these
data
were
consistent
Freundlich
model.
contact
time
rapid
phase
for
all
adsorbents.
However,
rate
gradually
slowed
down
equilibrium
reached
after
40
min
BCMN,
60
BCMH
BCMP
120
BCM.
IBU,
on
other
hand,
30
These
complemented
PSOM.
model
based
chemisorption,
where
electrons
are
transferred
shared,
bonding
π-π
interactions.
△Ho
value
confirms
sorption
endothermic.
△So
positive,
indicating
greater
freedom
at
solution
interface
during
uptake.
Environmental Challenges,
Journal Year:
2024,
Volume and Issue:
15, P. 100931 - 100931
Published: April 1, 2024
In
the
present
study,
deoiled
hemp
stem-twigs
and
roots
activated
carbon
were
used
to
remove
chromium
paracetamol.
The
hemp-based
materials
characterized,
surface
area
of
samples
increased
more
than
55-fold
compared
untreated
materials.
pore
volume
also
increased,
which
can
be
attributed
degradation
volatiles
during
carbonization
acid
treatment.
Contact
time
experiments
showed
that
uptake
rate
for
hexavalent
was
fast
in
initial
phase
equilibrium
reached
about
30
min
from
roots,
while
it
took
40
roots.
trends
paracetamol
show
slow
chromium.
Equilibrium
120
all
pH
solution
2
optimal
chromium,
6
adsorption
data
enthalpy
sorption
processes
endothermic
predominantly
physisorptive.
values
Gibbs
free
energy
negative,
indicating
spontaneous
feasible.
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(11), P. 4585 - 4585
Published: May 27, 2024
Environmental
pollution
is
a
significant
problem
and
increasing
gradually
as
more
harmful
pollutants
are
being
released
into
water
bodies
the
environment.
Water
dangerous
pose
threat
to
all
living
organisms
ecosystem.
Paper
waste
one
of
most
widespread
largest
wastes
in
world.
This
research
aims
address
two
important
problems
simultaneously:
reduction
solid
environment
using
activated
carbon
from
paper
potential
adsorbents
removal
contaminants
water.
Carbon
was
with
H2O2,
HNO3,
KMnO4
for
adsorption
Cr(VI)
MB.
SEM,
EDX,
FTIR,
Raman,
BET
were
used
determine
properties
materials.
The
surface
morphology
materials
consisted
amorphous
particles.
EDX
shows
that
samples
have
higher
content
(O)
than
waste.
Adsorption
studies
showed
there
stronger
interaction
between
adsorbent
at
initial
concentration
(200
mg/L)
lower
concentrations.
contact
time
data
show
uptake
increases
when
contaminant
increased.
tests
pH
solution
decreases
increased,
whereas
MB
results
fit
better
Freundlich
isotherm
PSO
models.
temperature
enthalpy
positive,
indicating
process
endothermic.
Gibbs
free
energy
values
negative,
favored.
After
four
consecutive
cycles,
retained
60%
their
capability.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(17), P. 13225 - 13234
Published: Jan. 1, 2025
S-DIB,
as
a
copolymer
material,
exhibited
better
adsorption/photodegradation
capacity
for
removing
methylene
blue
in
wastewater,
achieving
the
goal
of
wastewater
treatment
and
enriching
application
sulfur-rich
polymers.
