Langmuir,
Journal Year:
2024,
Volume and Issue:
40(43), P. 22573 - 22581
Published: Oct. 18, 2024
The
magnetic
composite
gel
bead
(Fe3O4–C@SA
GB)
adsorbent
was
prepared
by
sodium
alginate
(SA)
crosslinking
with
pitaya
peel-derived
porous
carbons
(PPDPCs)
and
iron
oxide
nanoparticles
(Fe3O4
NPs).
adsorption
effects
of
Fe3O4–C@SA
GBs
on
heavy
metal
ions
(HMIs)
17
β-estradiol
(E2)
in
water
are
evaluated
classical
kinetic
models
isotherm
models.
pseudo-second-order
model
shows
that
have
maximum
capacities
9.62,
7.50,
13.61
mg/g
for
Cu
(II),
Cd
Pb
respectively.
Meanwhile,
the
highest
performance
synthesized
beads
to
E2
is
ca.
276.3
mg/g.
In
addition,
can
still
maintain
a
high
level
efficiency
after
five
cycles,
displaying
economic
reusability.
Hence,
this
work
provides
useful
insights
into
efficient
elimination
pollutants
sewage
corresponding
mechanisms.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
283, P. 116794 - 116794
Published: July 29, 2024
Recent
pesticide
use
is
alarmingly
high
and
unregulated
in
several
parts
of
the
world.
Pesticide
fate
soil
controlled
by
sorption
processes
which
affect
subsequent
transport
chemical
reactivity
environment,
as
well
uptake
plants.
Sorption
are
dependent
on
composition
properties,
but
these
beginning
to
be
affected
global
warming-linked
factors
leading
depletion.
Thus,
it
vital
decipher
soils'
response,
especially
sub-Sahara
(SS),
depletion
some
inherent
components
presence
pesticides.
This
was
ascertained
monitoring
a
model
(atrazine)
desorption
whole
SS
(WS),
same
whose
organic
matter
(OMR)
iron
oxides
(IOR)
were
substantially
depleted,
studying
atrazine
from
soils
fast-growing
vegetables.
Organic
enhanced
equilibrium
OMR.
at
lower
ambient
pH,
higher
initial
concentration,
temperature.
Hysteresis
low
resulting
desorption.
Overall,
≥65
%
observed;
OMR
(≥95
%)
since
SOM
hysteresis.
Though
sub-Saharan
rich
oxides,
played
significantly
role
than
this
soil.
result
suggests
potential
for
leach
into
aquifer
sub-Saharan.
Atrazine
experiment
waterleaf
spinach
showed
that
could
detected
after
63
d,
its
growth
both
vegetables
with
depleted
(100
µg/kg)
spiking.
Spinach
may
accumulator
waterleaf.
It
concluded
grown
atrazine-contaminated
soils,
SOM/iron
oxide-depleted
likely
accumulate
atrazine.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
22(1), P. 161 - 179
Published: April 30, 2024
Two
types
of
phosphate-activated
carbon
were
prepared
from
African
star
apple(Chrysophylumalbidum)(CAAC)
seed
shell
and
pawpaw
(Carica
papaya)
(CPAC)
seeds,
characterized,
employed
for
Pb(II)
ion
sorption
simulated
contaminated
water
by
studying
the
rates
effects
pH,
dosage
temperature.
Experimental
data
assessed
using
kinetic
models,
thermodynamic
properties
investigated.
Characterizations
suggested
hydroxyl,
carboxyl,
amides,
phosphate
functional
groups
active
in
adsorption.
The
uptake
was
swift,
as
equilibrium
attained
within
60
minutes
both
adsorbents.
pseudo-second-order
(PSO)
fractal
(FPSO)
kinetics
models
fitted
rate
data.
effective
adsorbent
dose
50
mL
contaminant
solution
1.0
g
CAAC
CPAC
adsorbents,
pH
optimum
5.
process
exothermic
increasingly
spontaneous
with
higher
temperatures
reduced
entropy
transitioned
towards
equilibrium.
BothCAAC
adsorbents
may
be
treatment
over
a
wide
temperature
range.
Comparatively,
bothadsorbents
exhibited
similar
strength.
