IntechOpen eBooks,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 7, 2024
Environmental
pollution
with
heavy
metals
is
one
of
the
most
important
environmental
problems
this
century.
Bioaccumulating
in
food
chain,
exhibit
high
toxicity
toward
living
organisms.
To
prevent
serious
risks
to
human
health,
eliminating
these
air,
soil,
and
water
great
importance.
The
chapter
reviews
modern
data
on
distribution
environment,
organisms,
their
toxicity,
development
new
effective
sorbents
for
removal
from
environment
A
large
number
studies
are
devoted
synthesis,
modification,
properties
sorption
materials
metals.
New
information
presented
field
application
enterosorption
method
as
promising
areas
removing
organism,
well
prophylaxis
treatment
various
diseases.
Polymers,
Год журнала:
2025,
Номер
17(4), С. 502 - 502
Опубликована: Фев. 14, 2025
Among
the
naturally
occurring
polysaccharides,
chitosan
is
second-most
abundant
polysaccharide.
It
obtained
from
chitin
through
a
process
known
as
deacetylation.
biodegradable,
biocompatible,
and
non-toxic,
which
made
it
suitable
for
various
environmental
applications.
In
present
review,
structure,
properties,
characteristics
of
were
discussed.
addition,
modified
forms
(including
cross-linked,
nanoparticles,
functionalized,
grafted
chitosan)
enumerated.
The
applications
these
in
adsorption
organic
pollutants
(such
antibiotics,
dyes,
pesticides,
microplastics,
polyaromatic
hydrocarbons,
parabens,
polychlorobiphenyls)
are
comprehensively
reviewed.
Furthermore,
mechanism
adsorption,
isotherm
(Langmuir
Freundlich),
kinetic
models
highlighted.
Finally,
economic
viability
assessment
impact
processing
tons
shrimp
shells
into
annually
Polymers,
Год журнала:
2024,
Номер
16(17), С. 2417 - 2417
Опубликована: Авг. 26, 2024
This
review
embarks
on
a
comprehensive
journey,
exploring
the
application
of
lignocellulosic
biomass
materials
as
highly
effective
adsorbents
for
removal
textile
dyes
(cationic
and
anionic
dyes)
from
wastewater.
A
literature
analysis
were
conducted
to
identify
existing
gaps
in
previous
research
use
dye
removal.
study
investigates
factors
challenges
associated
with
methods
signifies
their
uses.
The
delves
into
pivotal
role
several
parameters
influencing
adsorption,
such
contact
time,
pH,
concentration,
temperature.
It
then
critically
examines
adsorption
isotherms,
unveiling
equilibrium
relationship
between
adsorbent
shedding
light
mechanisms
interaction.
process
kinetics
are
thoroughly
investigated,
detailed
examination
adsorbed
rate
molecules
onto
is
carried
out.
includes
lively
discussion
pseudo-first,
pseudo-second,
intra-particle
diffusion
models.
thermodynamic
aspects
also
addressed,
elucidating
feasibility
spontaneity
under
various
temperature
conditions.
paper
dives
desorption
studies,
providing
insights
regeneration
potential
sustainable
reusability.
environmental
impact
cost-effectiveness
employing
textiles
including
Congo
Red,
Reactive
Black
5,
Direct
Yellow
12,
Crystal
Violet,
Malachite
Green,
Acid
99,
others
wastewater
treatment
discussed,
emphasizing
significance
eco-friendly
solutions.
In
summary,
this
brings
together
wealth
diverse
studies
findings
present
overview
cationic
removal,
encompassing
influential
kinetics,
desorption,
thermodynamics
studies.
Its
scope
other
considerations
discussed
along
its
benefits.
collective
knowledge
synthesized
intended
contribute
advancement
efficient
water
technologies
industry.
Abstract
This
study
synthesized
three
MoS₂
morphologies—nanospheres,
nanoplatelets,
and
nanosheets—under
varied
conditions
incorporated
them
into
chitosan
membranes.
TEM
confirmed
unique
morphologies
crystallinity.
Clean
water
flux
showed
that
the
nanoplatelet
(P-CM)
membrane
had
highest
due
to
higher
porosity.
The
P-CM
excelled
in
removing
Mn²⁺
Zn²⁺
ions,
achieving
93.0
±
0.5%
90.4
1.5%
removal,
outperforming
membranes
with
nanospheres
(S-CM)
nanosheets
(T-CM).
Its
superior
performance
is
attributed
thicker
nanoplatelets
forming
more
channels.
MoS₂‘s
tri-layered
structure
generated
reactive
oxygen
species
(ROS)
via
H₂O₂
catalysis,
contributing
enhanced
heavy
metal
removal.
These
adsorptive-catalytic
combine
adsorption
catalytic
decomposition
of
metals,
highlighting
work’s
novelty
performance.
demonstrated
excellent
recovery
reusability
(96.0
for
P-CM)
after
chemical
cleaning.
findings
emphasize
impact
nanomaterial
on
treatment
environmental
remediation.
