Environmental Technology & Innovation,
Год журнала:
2023,
Номер
32, С. 103404 - 103404
Опубликована: Окт. 11, 2023
In
this
study,
a
novel
and
effective
magnetic
watermelon
seed
hydrochar
(MWSHC)
was
successfully
synthesized
via
hydrothermal
carbonization
technique
in
situ
co-precipitation
method.
The
prepared
waste
has
been
utilized
for
the
elimination
of
cadmium
ions
from
aqueous
environment.
structural
morphology,
surface
properties,
thermal
stability
MWSHC
adsorbent
were
characterized
using
FTIR,
SEM,
XRD,
BET
area,
TGA
analysis,
which
demonstrated
successful
synthesis
MWSHC.
An
extensive
study
Cd(II)
adsorption
conducted
by
assessing
influence
contact
time,
mass,
pH,
initial
concentration,
temperature,
coexisting
cations
on
process
Cd(II).
results
revealed
that
removal
efficiency
96.60%
achieved
at
pH
7.0,
time:
300
min,
dosage:
0.01
g,
T:
298
K.
Adsorption
isotherm
kinetic
parameters
estimated.
indicated
onto
followed
Freundlich
pseudo-second-order
models.
Based
Langmuir
equation,
maximum
capacity
347.2
mg/g
reusability
nanocomposite
studied,
revealing
around
84.4%
still
removed
after
four
cycles.
conclusion,
newly-
advantages
high
capacity,
cost-effectiveness,
easy
separation,
thus
having
promising
applications
effectively
removing
cadmium(II)
Molecules,
Год журнала:
2023,
Номер
28(23), С. 7839 - 7839
Опубликована: Ноя. 29, 2023
The
modification
of
the
Tetraselmis
sp.
algae
material
(Tetra-Alg)
with
surfactant
Cethyltrimethylammonium
Bromide
(CTAB)
yielded
adsorbent
Tetra-Alg-CTAB
as
an
methyl
orange
(MO)
and
methylene
blue
(MB)
solutions.
characterization
used
infrared
(IR)
spectrometer
to
identify
functional
groups
Scanning
Electron
Microscopy
Energy
Dispersive
X-ray
(SEM-EDX
FEI
Inspect-S50,
Midland,
ON,
Canada)
determine
surface
morphology
elemental
composition.
Methyl
adsorption
on
Tetra-Alg,
algae-modified
Na+
ions
(Tetra-Alg-Na),
were
studied,
including
variations
in
pH,
contact
time,
concentration,
reuse
adsorbents.
MO
MB
by
at
pH
10,
during
a
time
90
min,
concentration
250
mg
L-1
resulted
being
absorbed
amounts
128.369
51.013
g-1,
respectively.
kinetics
isotherms
Tetra-Alg-Na,
tend
follow
pseudo-second-order
models
Freundlich
each
correlation
coefficient
value
(R2)
approaching
1.
Due
cationic
CTAB,
anionic
dyes
can
be
strongly
sorbed
alkaline
due
strong
electrostatic
attraction,
while
is
more
likely
involve
cation
exchange
hydrogen
bonding.
was
carried
out
four
times
percent
>
70%,
very
effective
such
MO.
Analytical Methods,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Dioxins
rank
among
the
most
hazardous
persistent
organic
pollutants,
presenting
a
serious
threat
due
to
their
long
environmental
lifespan
and
capacity
for
bioaccumulation.
