Molecules,
Journal Year:
2023,
Volume and Issue:
28(11), P. 4538 - 4538
Published: June 3, 2023
A
novel
pomelo
peel
biochar/MgFe-layered
double
hydroxide
composite
(PPBC/MgFe-LDH)
was
synthesised
using
a
facile
coprecipitation
approach
and
applied
to
remove
cadmium
ions
(Cd
(II)).
The
adsorption
isotherm
demonstrated
that
the
Cd
(II)
by
PPBC/MgFe-LDH
fit
Langmuir
model
well,
behaviour
monolayer
chemisorption.
maximum
capacity
of
determined
be
448.961
(±12.3)
mg·g-1
from
model,
which
close
actual
experimental
448.302
(±1.41)
mg·g-1.
results
also
chemical
controlled
rate
reaction
in
process
PPBC/MgFe-LDH.
Piecewise
fitting
intra-particle
diffusion
revealed
multi-linearity
during
process.
Through
associative
characterization
analysis,
mechanism
involved
(i)
formation
or
carbonate
precipitation;
(ii)
an
isomorphic
substitution
Fe
(III)
(II);
(iii)
surface
complexation
functional
groups
(-OH);
(iv)
electrostatic
attraction.
great
potential
for
removing
wastewater,
with
advantages
synthesis
excellent
capacity.
Water,
Journal Year:
2025,
Volume and Issue:
17(3), P. 454 - 454
Published: Feb. 6, 2025
Adsorbents
derived
from
bamboo,
such
as
biochar,
charcoal,
activated
carbon,
and
chemically
modified
are
recognized
for
their
efficiency
cost-effectiveness
in
removing
heavy
metals
water.
Despite
this,
there
remains
a
gap
applying
bamboo-based
adsorbents
treating
metal-contaminated
water
sources,
particularly
regarding
physicochemical
properties,
adsorption
mechanisms,
modifications.
This
review
highlights
the
influence
of
factors
specific
surface
area,
pore
distribution,
pH,
cation
exchange
capacity,
elemental
composition,
functional
groups
on
ability
bamboo
to
adsorb
metals.
It
also
discusses
recent
advancements
enhancing
properties
through
physical
chemical
modifications
examines
how
variables
like
adsorbent
dosage,
temperature,
initial
concentrations
cations,
affect
metal
removal.
The
categorizes
mechanisms
into
complexation,
adsorption,
electrostatic
interaction,
ion
exchange,
precipitation,
redox
effect.
While
have
shown
higher
sorption
capacity
laboratory
settings,
is
need
more
comprehensive
studies
optimize
performance,
scalability,
real-world
applications.
