Environmental Challenges,
Journal Year:
2023,
Volume and Issue:
14, P. 100829 - 100829
Published: Dec. 30, 2023
Utilizing
Bagasse
Fly
Ash
(BFA)
as
an
adsorbent,
a
byproduct
from
the
sugar
industry,
proved
effective
in
removing
mixture
of
Malachite
Green
and
Methylene
Blue
dyes
aqueous
solutions.
To
enhance
its
efficacy,
fly
ash
underwent
chemical
modification
detailed
characterization
using
FTIR,
XRD,
SEM,
TGA
analyses.
Subsequently,
adsorption
studies
were
conducted
to
optimize
critical
parameters—initial
dye
concentration,
contact
time,
pH
levels—employing
Mixed-Level
Factorial
design
pinpoint
most
favorable
conditions
for
efficient
removal.
The
modified
resulted
maximum
capacity
18.75
mg/g
(71.5%)
15.5
(67.2%)
at
initial
concentration
100
mg/L,
9.6,
time
51.5
min.
Analysis
sorption
data
involved
rigorous
application
both
Langmuir
Freundlich
isotherm
models,
revealing
strong
fit
linear
representation
dyes.
Specifically,
R2
values
0.97
0.93
observed
Green,
while
notably
higher
0.99
0.96
obtained
Blue,
affirming
excellent
model-data
agreement.
Additionally,
kinetic
study
revealed
that
process
(MB
MG)
followed
pseudo-second-order
model
(R2
>
0.99),
indicating
chemisorption
dominant
mechanism
providing
valuable
insights
into
dynamic
behavior
process.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
272, P. 116019 - 116019
Published: Jan. 30, 2024
Agricultural
production
relies
heavily
on
pesticides.
However,
factors
like
inefficient
application,
pesticide
resistance,
and
environmental
conditions
reduce
their
effective
utilization
in
agriculture.
Subsequently,
pesticides
transfer
into
the
soil,
adversely
affecting
its
physicochemical
properties,
microbial
populations,
enzyme
activities.
Different
interacting
can
lead
to
combined
toxicity,
posing
risks
non-target
organisms,
biodiversity,
organism-environment
interactions.
Pesticide
exposure
may
cause
both
acute
chronic
effects
human
health.
Biochar,
with
high
specific
surface
area
porosity,
offers
numerous
adsorption
sites.
Its
stability,
eco-friendliness,
superior
capabilities
render
it
an
excellent
choice.
As
a
versatile
material,
biochar
finds
use
agriculture,
management,
industry,
energy,
medicine.
Added
helps
absorb
or
degrade
contaminated
areas,
enhancing
soil
activity.
Current
research
primarily
focuses
produced
via
direct
pyrolysis
for
adsorption.
Studies
functionalized
this
purpose
are
relatively
scarce.
This
review
examines
biochar's
absorption
characteristics,
formation
mechanisms,
impact,
delves
functionalization
methods,
prospects
limitations.
