Separation Science and Technology,
Journal Year:
2024,
Volume and Issue:
59(15), P. 1344 - 1358
Published: Aug. 21, 2024
A
new
composite
material,
named
TSC/AXAD-2,
was
developed
by
incorporating
a
bis-thiosemicarbazone
derivative
(TSC)
into
Amberlite
XAD-2
to
extract
Pb2+
ions
from
wastewater.
The
characterized
using
XPS,
TGA,
FTIR,
BET,
EDX,
1H-NMR,
13C-NMR,
and
GC-MS
analyses.
sorption
parameters,
such
as
pH
value
of
media,
equilibrium
time,
initial
ion
concentration,
dose,
temperature,
eluting
agents,
were
methodically
optimized.
utmost
adsorption
capacity
is
45.3
mg.g−1;
it
achieved
at
5.5,
15
min
agitation,
room
concentration
200
mg.L−1
ions.
isotherm
studies
revealed
that
the
process
closely
matches
Langmuir
model,
with
theoretical
retention
46.12
mg.g−1.
Furthermore,
kinetic
modeling
pseudo-first-order
accurately
depicted
thermodynamic
study
suggested
exothermic,
spontaneous,
more
favorable
lower
temperatures.
desorption
loaded
conducted
1.0
M
either
HCl
or
HNO3.
TSC/AXAD-2
successfully
met
WHO
FAO
guidelines
for
removal
wastewater
before
its
discharge
marine
environment.
ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(26)
Published: July 9, 2024
Abstract
A
facilely
prepared
composite
based
on
Polyvinyl
alcohol
anchored‐
L‐cysteine
(PVA‐L‐CYS)
demonstrated
efficient
functionality
in
the
elimination
of
heavy
metals
(Hg,
Cr,
Pb,
and
Cd)
from
working
wastewater.
The
synthesis
was
validated
through
a
comprehensive
characterization
utilizing
various
analytical
techniques
to
ensure
composite‘s
structural,
chemical,
physical
properties.
At
ambient
temperature,
pH
4–5.5,
interaction
time
15–20
minutes,
concentration
200
mg/L
metal
ions,
exhibited
maximum
retention
capacity
48.5,
25,
45.25,
44.25
mg/g
for
Hg,
Cd,
respectively.
Langmuir
modeling
establish
be
more
fitting
practical
results
than
Freundlich,
providing
theoretical
values
49.02,
25.97,
46.08,
44.84
kinetics
PVA‐L‐CYS
accurately
predicted
by
model
pseudo‐first‐order
kinetic.
Thermodynamic
prospects
indicated
spontaneous,
exothermic,
favorable
uptake
process
at
low
temperatures.
Efficient
elution
ions
overloaded
performed
using
1
M
HNO
3
.
In
accordance
with
WHO
FAO
guidelines,
successful
wastewater
single
cycle
before
discharge
into
marine
environment.
Abstract
This
review
presents
a
comprehensive
analysis
and
bibliometric
evaluation
of
chromium
(Cr)
removal
from
aqueous
solutions
using
biomass‐derived
activated
carbon.
A
250
publications
2000
to
2024
reveals
increasing
global
research
interest,
with
significant
contributions
China,
India,
the
USA.
Key
themes
identified
include
adsorption
mechanisms,
carbon
modification,
biosorption
techniques.
Biomass‐based
adsorbents,
such
as
corn
cob,
Ulva
lactuca
,
Eichhornia
crassipes
demonstrate
high
capacities,
ranging
80
mg/g
for
hexavalent
(Cr(VI)),
depending
on
preparation
methods
operational
conditions.
The
highlights
advanced
techniques,
including
chemical
activation
KOH
H₃PO₄,
which
enhance
surface
area
up
1500
m
2
g
−1
significantly
improving
performance.
Despite
promising
results,
challenges
persist
in
scaling
industrial
applications,
inconsistent
performance
across
biomass
types,
need
cost‐effective
regeneration
methods.
Incorporating
nanotechnology,
metal
oxide
nanoparticles,
has
improved
efficiencies
by
30%,
broadening
potential
applications.
provides
critical
insights
into
optimizing
methods,
standardizing
parameters,
bridging
gap
between
laboratory
findings
real‐world
underscoring
sustainable
effective
solution
chromium‐contaminated
wastewater
treatment.
Magnetochemistry,
Journal Year:
2023,
Volume and Issue:
9(5), P. 132 - 132
Published: May 19, 2023
Herein,
we
report
a
procedure
for
separating
and
preconcentrating
antibiotics
from
human
serum
using
novel
adsorbent
of
magnetic
graphene
oxide
(MGO)
cadmium
sulfide
(CdS)
nanoparticles.
The
(MGO@CdS)
was
characterized
Fourier
transformed
infrared
spectrometry
(FT-IR),
energy
dispersive
X-ray
spectroscopy
(EDX),
field
emission
scanning
electron
microscopy
(FE-SEM).
effective
parameters
extraction
efficiency
were
investigated,
including
the
desorption
solvent’s
nature,
pH,
dose,
salt
concentration,
time,
volume
sample
solution
solvent.
proposed
proved
to
be
fast
(20
min),
simple
(two
stages),
cost-effective
mg
nanoparticles).
Under
optimum
conditions,
satisfactory
linearity
(R2
>
0.992)
obtained,
limits
detection
(LOD)
estimated
as
4.5
µg
L−1
(for
tetracycline)
5.7
penicillin)
linear
dynamic
range
(LDR)
20
200
L−1.
solid
phase
(MSPE)
method
based
on
MGO@CdS
has
achieved
recovery
(71.5–109.5%)
in
selected
antibiotics.
Finally,
antibiotic’s
release
studied
simulated
fluids
gastric
(pH
=
1.2)
intestine
7.4).
In
this
light,
demonstrate
that
newly
introduced
can
used
drug
different
biological
media.
International Journal of Phytoremediation,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 21
Published: April 4, 2025
Pomegranate
peel
waste
in
the
forms
of
raw
biomass,
biochar
and
activated
carbon
has
been
explored
as
adsorbents
water
treatment.
This
review
examined
discussed
published
works
between
2008
2024
that
focused
on
utilization
pomegranate
with
emphasis
preparation
strategies,
characterization
techniques
applications.
The
thermal
chemical
activation
have
shown
to
improve
structural
properties
resultant
adsorbent
materials
effectively
adsorb
various
pollutants
such
dyes,
heavy
metals,
organics,
inorganic
nonmetals,
pharmaceuticals
from
water.
performance
was
compared
avenues
for
future
research
highlighted
shed
insight
into
potential
environmental
protection.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(2), P. 450 - 450
Published: Jan. 17, 2024
Environmental
analytical
chemistry
has
evolved
into
a
well-established
interdisciplinary
field
(analytical
chemistry,
pollution
chemical
engineering,
etc
[...]
