Materials Research Express,
Journal Year:
2024,
Volume and Issue:
12(1), P. 012001 - 012001
Published: Dec. 20, 2024
Abstract
As
the
world
moves
toward
greener
energy
generation
methods
and
cleaner
environments,
activated
carbon
produced
from
ligninocellulosic
resources
has
attracted
unexpected
interest
due
to
its
easy
availability,
economic,
renewable,
biodegradable
properties,
which
makes
it
a
viable
alternative
exhaustible
coal.
This
review
paper
provides
comprehensive
overview
of
systematic
procedure
develop
plant
biomass,
characterization
by
simple
techniques,
versatile
applications
carbon.
includes
role
in
environmental
remediation,
emphasizing
efficacy
removing
wide
array
pollutants,
sustainable
hydrogen
capture
storage
supercapacitors.
A
brief
comparison
key
aspects
optimal
toxicant
adsorption,
like
batch
conditions,
best-fit
model,
isotherms,
maximum
are
also
made.
To
ascertain
efficiency
supercapacitors,
their
strategy
designing
it,
output
terms
specific
capacitance,
power,
density
compared.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Feb. 4, 2025
In
this
study,
a
novel
MgFe2O4-Schiff
base-chitosan
nanocomposite
was
synthesized
using
straightforward
crosslinking
method.
The
synthesis
involved
integrating
MgFe2O4
nanoparticles
with
modified
chitosan
through
Schiff
base
formed
by
the
reaction
between
terephthalaldehyde
and
aminopyrazine.
A
comprehensive
characterization
performed,
including
X-ray
diffraction
analysis,
which
verified
crystalline
structure
successful
incorporation
of
MgFe2O
into
chitosan-Schiff
matrix.
Scanning
electron
microscopy
revealed
distinct
surface
morphology,
characterized
rough,
non-uniform
alignment
resulting
from
strong
interactions
Additionally,
energy-dispersive
analysis
elemental
composition
nanocomposite,
revealing
peaks
corresponding
to
carbon,
nitrogen,
oxygen,
magnesium,
iron.
exhibited
outstanding
performance
as
nanoadsorbent
for
efficient
removal
Pb(II)
ions
aqueous
media
electrostatic
attraction
complexation
mechanisms,
achieving
maximum
adsorption
capacity
290.7
mg
g-1.
process
determined
be
spontaneous,
endothermic,
chemically
driven,
aligning
well
Langmuir
isotherm
model
pseudo-second-order
kinetics.
optimal
conditions
were
pH
5.5,
contact
time
100
min,
temperature
328
K.
Furthermore,
demonstrated
excellent
recyclability,
retaining
over
94.8%
its
initial
efficiency
after
five
consecutive
adsorption-desorption
cycles.
This
study
highlights
nanocomposite's
potential
an
eco-friendly,
cost-effective,
highly
material
practical
applications
in
water
treatment,
addressing
urgent
need
sustainable
solutions
heavy
metal
contamination.
Environmental Challenges,
Journal Year:
2024,
Volume and Issue:
14, P. 100865 - 100865
Published: Jan. 1, 2024
This
paper
presents
an
analytical
risk
assessment
of
heavy
metals
(HMs)
in
twenty-three
rivers
and
two
typical
lakes
across
five
different
provinces
Nepal.
The
study
examines
their
effects
on
humans
varying
age
groups
ecological
systems
using
indexes
such
as
Hazard
Index
(HI),
Cancer
(CI),
hazard
quotient
(HQ).
human
health
reveals
that
female
children
are
the
most
vulnerable
to
metal
risks,
followed
by
male
children,
adults,
adults.
Notably,
Co,
Pb,
Cd,
As,
Cr,
Cu
present
substantially
high
non-carcinogenic
risks
for
all
adults
with
HI
values
ranging
from
1
more
than
100.
However,
this
is
confined
only
(both
female)
Mn
Ni.
HMs
Ni,
Pb
have
a
very
carcinogenic
some
(CI
>
1.00E-3).
Concerning
risk,
HQ
found
be
significantly
above
permissible
limit
order
Cu>Cd>Pb>Fe>Zn>Co>Ni>Mn.
Furthermore,
integration
various
treatment
technologies
would
enhance
effectiveness
eliminating
polluted
river
water,
ensuring
water
becomes
suitable
irrigation
other
purposes.
identified
priority
controlling
factors
potential
remediation
can
provide
valuable
insights
policymakers
making
informed
decisions
concerning
safety
system.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: July 30, 2024
The
development
of
nanomaterials
incorporating
organic
components
holds
significant
importance
in
addressing
the
efficient
removal
metal
ions
through
adsorption.
Hence,
this
study,
a
novel
MnFe2O4/chitosan/Schiff
base
nanocomposite
was
successfully
synthesized
by
crosslinking
MnFe2O4
nanoparticles
with
functionalized
chitosan
using
Schiff
base.
created
condensation
reaction
between
2-aminophenol
and
terephthalaldehyde.
Comprehensive
characterization
performed
FT-IR,
XRD,
SEM,
VSM
analyses,
revealing
less
crystalline
arrangement
compared
to
pure
chitosan,
rough
non-uniform
surface
morphology,
reduced
magnetization
value
30
emu/g.
Furthermore,
working
as
an
adsorbent
for
effective
disposal
Zn(II)
from
aqueous
solutions.
exhibited
maximum
sorption
capacity
289.86
mg/g
ions.
Additionally,
results
indicated
that
spontaneous,
chemical,
endothermic
process,
aligning
well
Langmuir
isotherm
pseudo-second-order
model.
at
pH
7.5,
contact
duration
100
min
temperature
328
K,
fabricated
reached
its
study
demonstrate
effectiveness
newly
removing
media.
synthesis
approach
high
adsorption
underscore
potential
composite
practical
applications
industrial
wastewater
treatment.
dual
mechanism
involving
electrostatic
attraction
complexation
processes
further
enhances
utility,
making
it
valuable
contribution
field
environmental
remediation.
International Journal of Latest Technology in Engineering Management & Applied Science,
Journal Year:
2025,
Volume and Issue:
14(2), P. 87 - 99
Published: March 10, 2025
Abstract:
The
distribution
of
Cu2+
between
buffered
aqueous
phases
and
chloroform
solutions
4,4´-(1E,1E´)-1,1´-(ethane-1,2-diylbis(azan-1-yl1ylidene))bis(5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-ol)
(H2BuEtP)
alone
in
the
presence
1-(3-hydroxy-5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)
butan-1-one(HBuP)
was
investigated
using
solvent-solvent
extraction.
200
mgL-1
used
for
study
with
an
equilibration
time
60
minutes.
Concentration
after
determined
AAS
calculated
by
difference
Copper
concentration
organic
phases,
ratios(D)
percentage
extractions(%E)
were
determined.
Slope
analysis
from
plots
log
D
against
buffers
pHs,
ligands
concentrations
metal
to
propose
reaction
equations
extracted
complexes
as
Cu(HBuEtP.X)(o)
ligand
Cu(HBuEtP.BuP)(o)
HBuP.
extraction
constant
Kex,
obtained
H2BuEtP
(-5.11±0.7)
greater
than
that
H2BuEtP/HBuP
(-12.94±1.26)
which
indicated
HBuP
did
not
exert
any
synergic
effects
Cu2+,
even
though
partition
coefficient
2.03
±
0.81
>
0.97
0.62
H2BuEtP.
Comparing
results
those
other
studies,
showed
carbon
chain
length
structurally
related
on
ions
is
dependent
particular
ion.
a
better
extractant
Ni2+
Fe2+
only
Pb2+,
UO2+
Cd2+
based
Kex
values.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: March 11, 2025
In
this
study,
the
Fe2O3@SiO2-L-cysteine-cellulose
system
was
synthesized
and
characterized
through
XRD,
FT-IR,
EDS,
TGA-DTA
analyses.
This
system's
adsorption
performance
evaluated
for
removing
heavy
metals
such
as
Cr,
Cd,
Ni,
Pb
from
synthetic
wastewater.
The
magnetic
core
demonstrated
a
beneficial
effect
on
enhancing
metal
capacity
of
polymer,
while
properties
facilitated
recyclability
adsorbent.
Cr(VI),
Cd(II),
Ni(II),
Pb(II)
ions
explored
under
varying
conditions
pH,
temperature,
ion
concentration,
adsorbent
dosage.
Maximum
capacities
were
recorded
at
423.56
mg/g,
426.32
422.21
respectively,
optimal
pH
6.5,
concentration
600
mg/L,
an
dose
0.07
g,
room
temperature.
Additionally,
material
water,
N2,
CO2
assessed.
exhibited
excellent
removal
efficiency
Cr(VI)
(˃98%)
initial
90
mg/L
using
g
combination
Fe2O3@SiO2,
L-cysteine,
cellulose
in
one
performs
distinct
advantages
enhanced
surface
area
adsorbent,
preventing
degradation
harsh
conditions,
separation
reusability
Heavy
metal
pollution
poses
a
significant
threat
to
the
environment
and
human
health.
Developing
efficient
adsorbent
materials
for
removing
these
contaminants
from
water
is
crucial.
Sulfur-based
polymers
derived
inverse
vulcanization
were
found
be
promising
candidates
adsorption
of
several
heavy
metals
water.
In
this
work,
polysulfides
bearing
β-diketone
functional
groups
are
synthesized
first
time
through
between
acetoacetoxyethyl
methacrylate
(AAEMA)
sulfur.
Successful
copolymerization
incorporation
acetoacetate
moiety
into
polymer
chain
confirmed
by
NMR,
FT-IR,
Raman,
XPS,
XRD,
DSC,
TGA
analyses.
A
porous
variant
made
using
facile
template-assisted
method
exploring
NaCl
as
porogen.
The
analyzed
X-ray
micro-CT
SEM
get
insights
internal
architecture
well
surface
porosity
adsorbent.
Energy-dispersive
(EDAX)
CHNS(O)
analyses
reveal
sulfur-rich
with
uniformly
distributed
oxygen
carbon.
studies
conducted
in
multielement
solution
containing
different
types
ions.
exhibited
remarkable
chelation
properties,
removal
efficiency
100%
Hg2+
72-96%
Cr3+,
Pb2+,
Co2+,
Fe3+,
Ni2+,
Ag+,
Cu2+.
synergistic
interplay
thiol
groups,
polysulfide
loops,
strong
binding
affinity
hydroxyl
group
coupled
polymer's
well-defined
structure
collectively
enhances
its
capacity
toward
prototype
an
identical
monolithic
form
has
been
constructed.
monolith
retains
all
benefits
particulate
while
allowing
separation
treated
simply
lifting
it
single
unit,
eliminating
necessity
filtration
necessary
adsorbents.
