Polymers,
Год журнала:
2024,
Номер
16(24), С. 3469 - 3469
Опубликована: Дек. 12, 2024
Designing
new
engineered
materials
derived
from
waste
is
essential
for
effective
environmental
remediation
and
reducing
anthropogenic
pollution
in
our
economy.
This
study
introduces
an
innovative
method
remediating
metal-contaminated
water,
using
two
distinct
types:
one
biowaste
(eggshell)
industrial
(fly
ash).
We
synthesized
three
novel,
cost-effective
nanoadsorbent
types,
including
tertiary
composites
biopolymer-based
(specifically
k-carrageenan
chitosan),
which
targeted
chromium
removal
aqueous
solutions.
SEM
analysis
reveals
that
the
first
composite,
EMZ,
zeolite,
magnetite
nanoparticles
are
successfully
integrated
into
porous
structure
of
eggshell.
In
second
composite
(FMZ),
fly
ash
particles
similarly
loaded
within
zeolite
pores.
Each
by
incorporating
corresponding
(FMZ
or
EMZ)
biopolymer
framework.
Structural
modifications
eggshell,
chitosan,
resulted
notable
increases
specific
surface
area,
as
confirmed
BET
analysis.
These
enhancements
significantly
improve
adsorption
efficiency
each
adsorbent
type
developed.
The
performances
achieved
follows:
EMZ
(89.76%),
FMZ
(84.83%),
EMZCa
(96.64%),
FMZCa
(94.87%),
EMZC
(99.64%),
FMZC
(97.67%).
findings
indicate
across
all
types
occurs
via
a
multimolecular
layer
mechanism,
characterized
spontaneous
endothermic.
Desorption
studies
further
demonstrate
high
reusability
these
nanomaterials.
Overall,
this
research
underscores
potential
utilizing
performant
low-cost
biocomposites
bioremediation
applications.
Toxics,
Год журнала:
2024,
Номер
12(9), С. 657 - 657
Опубликована: Сен. 8, 2024
Anthropogenic
activities
and
increasing
human
population
has
led
to
one
of
the
major
global
problems
heavy
metal
contamination
in
ecosystems
generation
a
huge
amount
waste
material
biomass.
Hexavalent
chromium
[Cr(VI)]
is
contaminant
introduced
by
various
industrial
effluents
into
ecosystem.
Cr(VI)
known
mutagen
carcinogen
with
numerous
detrimental
effects
on
health
humans,
plants,
animals,
jeopardizing
balance
ecosystems.
Therefore,
remediation
such
hazardous
toxic
pollutant
from
environment
necessary.
Various
physical
chemical
methods
are
available
for
sequestration
metals.
However,
adsorption
recognized
as
more
efficient
technology
remediation.
Adsorption
utilizing
biomass
adsorbents
sustainable
approach
remediating
pollutants,
thus
serving
dual
purpose
exploiting
an
eco-
friendly
manner.
Agricultural
biomass,
residues,
forest
food
primary
that
could
be
employed,
different
strategies,
Cr(VI).
This
review
focuses
use
diverse
agricultural
by-products,
effective
aqueous
solutions.
The
also
operational
conditions
improve
remediation,
describes
efficacy
materials
modifications,
assesses
general
sustainability
these
approaches
reducing
pollution.
Materials,
Год журнала:
2025,
Номер
18(7), С. 1485 - 1485
Опубликована: Март 26, 2025
The
removal
of
chromium
compounds,
particularly
its
more
toxic
Cr(VI)
form,
from
industrial
wastewater
is
important
as
it
causes
serious
environmental
and
health
issues.
Adsorption
processes
have
attracted
continuous
interest
for
solving
these
problems
due
to
the
diverse
range
various
adsorbents.
Nanomaterials
are
increasingly
employed
novel
sorbents
they
a
large
specific
surface
area
high
chemical
stability.
Functionalization
their
by
covalent
or
noncovalent
interactions
with
other
components,
grafting
doping
heteroatoms
can
enhance
separation
efficiency.
This
paper
aims
provide
insights
into
recent
progress
in
application
nanomaterials
aqueous
solutions
speciation
analysis
it.
