Royal Society of Chemistry eBooks,
Journal Year:
2024,
Volume and Issue:
unknown, P. 133 - 177
Published: Nov. 8, 2024
The
presence
of
emerging
pollutants
in
water,
including
pesticides,
cosmetics,
pharmaceuticals,
and
unregulated
compounds,
has
raised
serious
concerns
due
to
their
potential
harm
human
health
the
environment,
even
at
low
concentrations.
Traditional
wastewater
treatment
methods
struggle
completely
eliminate
these
pollutants,
necessitating
innovative
solutions.
This
chapter
investigates
critical
role
carbon-based
nanomaterials,
such
as
activated
carbon
nanoparticles,
nanodiamonds,
fullerenes,
graphene
its
oxides,
quantum
dots,
nanotubes
nanofibers,
aerogel,
addressing
challenge
pollutant
removal.
Carbon
nanomaterials
are
highlighted
for
exceptional
surface
properties,
adaptability,
large
area,
adjustable
structural
modifications,
high
chemical
stability,
making
them
ideal
candidates
removal
pollutants.
is
expected
pave
way
towards
offering
novel
prospects
increasing
utilization
it
may
serve
a
comprehensive
resource
researchers,
policymakers,
seeking
address
pressing
issue
water
enhance
protection
our
vital
resources
public
well-being.
ACS Omega,
Journal Year:
2023,
Volume and Issue:
8(42), P. 39680 - 39689
Published: Oct. 9, 2023
Employing
Psidium
guajava
(P.
guajava)
extract
from
leaves,
copper
oxide
nanoparticles
(CuO
NPs),
likewise
referred
to
as
cupric
and
renowned
for
their
sustainable
harmless
biogenesis,
have
the
possibility
of
being
useful
purification
pollutants
well
medicinal
purposes.
The
current
study
examined
generated
CuO
NPs
physical
qualities
by
using
ultraviolet-visible
(UV)
spectroscopy.
distinctive
peak
at
265
nm
NP
production
was
originally
seen.
Additionally,
an
X-ray
diffraction
(XRD)
investigation
conducted
identify
crystalline
arrangement
produced
NPs,
a
Fourier
transform
infrared
(FTIR)
spectroscopy
examination
performed
validate
functional
compounds
NPs.
synthesized
nanoparticles'
catalytic
activities
(wastewater
treatment)
were
analyzed
in
dark
sunlight
modes.
properties
total
darkness
resulted
64.21%
discoloration,
whereas
exposure
sunshine
increased
nanomaterials'
catalyst
performance
92.31%.
By
lowering
Cr(VI),
Ni,
Pb,
Co,
Cd
sewage
proportions
91.4,
80.8,
68.26,
73.25,
72.4%
accordingly,
demonstrated
its
effectiveness
nanosorbent.
Total
suspended
solids
(TSS),
dissolved
(TDS),
chemical
oxygen
demand
(COD),
biological
(BOD),
conductance
all
successfully
reduced
nanotreatment
tanning
effluents,
with
proportion
reductions
93.24,
88.62,
94.21,
87.5,
98.3%,
correspondingly.
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
26(13), P. 7579 - 7655
Published: Jan. 1, 2024
In
this
review
paper,
recent
developments
of
iron
oxide
nanoparticles
are
highlighted
and
discussed
in
the
field
organic
catalysis
environmental
remediation.
Environmental Research,
Journal Year:
2023,
Volume and Issue:
233, P. 116484 - 116484
Published: June 25, 2023
Synthetic
dyes
are
considered
toxic
compounds
and
as
such
not
easily
removed
by
conventional
water
treatment
processes.
This
study
demonstrated
the
synthesis
of
pure
manganese-
(Mn),
silver-
(Ag),
iron-
(Fe)
doped
zinc
oxide
(ZnO)
nanoparticles
via
wet
chemical
route.
In
particular,
it
investigated
batch
adsorption
studies
physiochemical
properties
synthesized
ZnO
materials
for
removing
congo
red
(CR)
dye.
X-ray
diffraction
(XRD),
Raman
spectroscopy,
energy-dispersive
spectroscopy
(EDS)
confirmed
materials.
The
investigation
revealed
efficiencies
99.4%
CR
dye
at
an
optimal
dose
0.03
g/30
ml
Mn-doped
a
solution
pH
2.
capacity
each
was
found
to
be
in
order
(232.5
mg/g)
>
Ag-doped
(222.2
(212.7
Fe-doped
(208.3
mg/g).
Both
pseudo-second-order
kinetics
model
Langmuir
isotherm
accurately
explained
behaviors
As
such,
Van
der
Waal
interactions,
H-bonding,
electrostatic
interaction
were
mechanisms
responsible
removal.
addition,
desorption-regeneration
indicated
successful
reuse
exhausted
material
five
cycles
with
efficiency
83.1%.
Overall,
this
has
that
could
viable
adsorbent
cleanup
dye-contaminated
water.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(3), P. 572 - 572
Published: Jan. 27, 2025
Arsenic
(As),
a
highly
toxic
and
carcinogenic
heavy
metal,
poses
significant
risks
to
soil
water
quality,
while
oxytetracycline
(OTC),
widely
used
antibiotic,
contributes
environmental
pollution
due
excessive
human
usage.
Addressing
the
coexistence
of
multiple
pollutants
in
environment,
this
study
investigates
simultaneous
adsorption
As(III)
OTC
using
novel
bimetallic
zinc-iron-modified
biochar
(1Zn-1Fe-1SBC).
The
developed
adsorbent
demonstrates
enhanced
recovery,
improved
efficiency,
cost-effective
operation.
Characterization
results
revealed
high
carbon-to-hydrogen
ratio
(C/H)
specific
surface
area
1137
m2
g−1
for
1Zn-1Fe-1SBC.
Isotherm
modeling
indicated
maximum
capacities
34.7
mg
172.4
OTC.
Thermodynamic
analysis
confirmed
that
processes
both
were
spontaneous
(ΔG
<
0),
endothermic
(ΔH
>
driven
by
chemical
80
kJ
mol−1),
with
increased
system
disorder
(ΔS
0).
mechanisms
involved
interactions,
including
pore
filling,
hydrogen
bonding,
electrostatic
attraction,
complexation,
π-π
interactions.
These
findings
underscore
potential
1Zn-1Fe-1SBC
as
promising
remediation
wastewater
containing
coexisting
pollutants.
Foods,
Journal Year:
2023,
Volume and Issue:
12(19), P. 3646 - 3646
Published: Oct. 2, 2023
Agri-food
residues
or
by-products
have
increased
their
contribution
to
the
global
tally
of
unsustainably
generated
waste.
These
residues,
characterized
by
inherent
physicochemical
properties
and
rich
in
lignocellulosic
composition,
are
progressively
being
recognized
as
valuable
products
that
align
with
principles
zero
waste
circular
economy
advocated
for
different
government
entities.
Consequently,
they
utilized
raw
materials
other
industrial
sectors,
such
notable
case
environmental
remediation.
This
review
highlights
substantial
potential
thermochemical
valorized
agri-food
transformed
into
biochar
hydrochar,
versatile
adsorbents
wastewater
treatment
promising
alternatives
various
energy-related
applications.
materials,
enhanced
achieved
through
tailored
engineering
techniques,
offer
competent
solutions
cost-effective
satisfactory
results
applications
contexts
removing
pollutants
from
green
energy
generation.
sustainable
approach
not
only
addresses
concerns
but
also
paves
way
a
more
eco-friendly
resource-efficient
future,
making
it
an
exciting
prospect
diverse
