ACS Sustainable Resource Management,
Journal Year:
2024,
Volume and Issue:
1(2), P. 355 - 367
Published: Feb. 13, 2024
The
escalating
contamination
of
water
bodies
by
synthetic
dyes
necessitates
innovative
and
ecoconscious
strategies
for
wastewater
treatment.
In
this
study,
activated
biochars
BC-800
(1:0.25),
(1:0.5),
(1:1)
from
wheat
straw
were
synthesized.
Here,
ratios
denote
the
mass
relationship
between
potassium
hydroxide;
"800"
represents
pyrolysis
temperature.
These
rigorously
characterized
revealing
most
efficient
material,
(1:1),
presenting
a
surface
area
2578.82
m2/g
average
pore
diameter
5.51
nm.
Across
parallel
batch
experiments,
it
effectively
extracted
(rhodamine
B
(RhB),
methylene
blue
(MB),
methyl
orange
(MO))
within
15–20
min,
primarily
through
chemisorption
pathways.
Increased
porosity
resulted
in
greater
dispersion
adsorption
sites
including
C═C
linkages
(π–π
interactions)
H-bonding
via
carbonyl
groups
(C═O).
To
understand
mechanism,
Langmuir,
Freundlich,
Temkin
isotherm
models
employed
to
investigate
equilibrium
behavior.
Results
show
that
followed
Freundlich
(R2:
0.9659
RhB,
0.9927
MB,
0.9979
MO,
respectively),
showing
dye
molecules
form
multilayers
on
biochar
(π-stacking).
Biochar
recycling
chemical
regeneration
demonstrated
sustained
removal
efficiency
>90%
over
multiple
cycles.
Applied Surface Science Advances,
Journal Year:
2023,
Volume and Issue:
19, P. 100562 - 100562
Published: Dec. 21, 2023
Rapid
growth
in
socio-economic
requirements
and
climatic
change
has
put
much
pressure
on
the
quality
of
water
resources.
To
prevent
future
shortage
fresh
to
keep
up
with
current
demand
for
water,
wastewater
reuse,
recycling
are
among
most
pressing
issues
that
must
be
addressed
immediately.
So
far,
many
technologies
have
been
used
remove
both
inorganic
organic
pollutants
from
wastewater.
Unfortunately,
modern
treatment
still
out
reach
financially
developing
nations,
making
it
difficult
them
eliminate
these
toxins.
Moreover,
increasing
environmental
toxicity
solid
waste
exposures
is
also
a
major
cause
worry.
Intending
combat
issues,
research
efforts
increased
develop
an
efficient,
eco-friendly
low
cost
biosorbent
agricultural
treat
As
result,
there
focus
identifying
locally
regionally
accessible
agriculture
wastes
removal
heavy
metals/metalloids
dyes.
This
article
aims
review
multidisciplinary
approach
handle
as
potential
resource
treatment.
A
comprehensive
discussion
included
fundamentals
biosorption
involved
mechanism.
The
strategies
improve
efficiency
biosorbents
discussed.
In
addition,
developments
various
derived
different
their
application
toxic
elements
using
diverse
methods
reviewed
set
stage
further
investigation.
Finally,
regeneration
challenges
implement
addressed.
will
help
bridge
gap
between
laboratory
findings
industrial
application,
leading
development
more
efficient
systems
removing
pollutants.
Environmental Technology & Innovation,
Journal Year:
2023,
Volume and Issue:
30, P. 103092 - 103092
Published: March 2, 2023
The
removal
of
a
toxic
contaminant
like
Cr(VI)
from
the
water
via
green
adsorbents
biochar
and
activated
carbon
is
an
eco-friendly
technique.
In
this
paper,
using
commercial
as
raw
material,
magnetic
ferric
oxide/activated
(Fe3O4@AC)
was
prepared
by
chemical
co-precipitation
method,
adsorption
in
applied.
synthesized
materials
were
characterized
advanced
characterization
techniques
including
XRD,
BET,
FT-IR,
XPS.
effects
initial
concentration,
temperature,
time
on
effect
evaluated.
Results
illustrated
that
maximum
achieved
Fe3O4@AC
45.3
mg/g,
with
rate
88.8%
at
optimum
pH
2.0
12
h.
Under
these
conditions,
fits
pseudo-second-order
kinetic
model
(PSO)
Langmuir
isotherm
spontaneous,
endothermic,
irreversible
process.
results
XPS
analysis
before
after
suggested
mechanism
mainly
based
chemisorption,
supplemented
physical
adsorption,
accompanied
electrostatic
attraction
complexation.
