Materials,
Journal Year:
2024,
Volume and Issue:
17(4), P. 928 - 928
Published: Feb. 17, 2024
Landfill
leachate
(LLCH)
disposal
poses
challenges
due
to
high
pollutant
concentrations.
This
study
investigates
the
use
of
biochar
(BC)
derived
from
wheat
straw
for
nitrogen
content
reduction.
Laboratory
experiments
evaluated
BC's
adsorption
capacity
(qm)
removal
ammonium
chloride
solution
(NH4Cl)
and
LLCH,
along
with
testing
isotherm
models.
The
results
demonstrated
that
BC
was
more
efficient
(95.08%)
than
commercial
activated
carbon
AC
(93.11%),
blank,
in
adsorbing
NH4Cl.
superior
performance
may
be
attributed
its
higher
(57.74%)
observed
through
elemental
analysis.
Lower
BC/LLCH
LLCH's
complex
chemical
matrix.
Langmuir
model
best
described
BC/NH4Cl
(qm
=
0.5738
mg/g).
AC/NH4Cl
data
also
fitted
into
(R2
˃
0.9)
a
qm
0.9469
mg/g,
26.667
mg/g
˂
obtained
BC/LLCH;
gave
using
Jovanovich
(which
follows
Langmuir's
assumptions).
mean
energy
values
estimated
AC/NH4Cl,
BC/NH4Cl,
processes
were
353.55,
223.61
kJ/mol,
respectively,
suggesting
they
are
all
chemisorption
ion
exchange
influenced
their
processes.
Freundlich
constant
(1/n)
value
suggests
average
BC/LLCH.
followed
Harkins-Jura
(R2:
0.9992),
multilayered
(or
mesopore
filling).
In
conclusion,
shows
promising
potential
landfill
remediation,
offering
capabilities
demonstrating
compatibility
various
research
lays
groundwork
further
exploration
other
biochar-based
materials
addressing
environmental
associated
contamination.
Water,
Journal Year:
2024,
Volume and Issue:
16(5), P. 698 - 698
Published: Feb. 27, 2024
This
work
evaluates
the
efficiency
of
three
biochar
samples
toward
adsorption
manganese,
iron,
and
selenium
present
in
a
sample
urban
wastewater.
The
was
produced
from
pyrolysis
rice
husks
at
350
°C
for
6
h
(RHB)
subsequently
modified
using
HCl
(RHBHCl)
or
NaOH
(RHBNaOH)
to
increase
its
surface
area.
RHBNaOH
exhibited
highest
removal
metals.
metals’
order
Mn
(76%),
Se
(66%),
Fe
while
RHBHCl,
it
(59%),
(30%),
(26%).
results
show
that
as-prepared
RHB
can
remove
metals,
even
if
low
amounts
(Fe
(48%),
(3%),
(39%)).
types
adsorbents
follows
Langmuir
isotherm
model.
Pseudo-first-order
pseudo-second-order
models
were
used
determine
mechanism
each
adsorbents.
Both
showed
good
fit
with
R2
(>0.9)
sorption
Fe,
Mn,
Se.
Overall,
this
demonstrates
potential
metals
real
Water,
Journal Year:
2025,
Volume and Issue:
17(2), P. 207 - 207
Published: Jan. 14, 2025
This
study
aimed
to
produce
activated
carbon
from
desilicated
rice
husks
using
various
carbonization
and
activation
methods,
including
a
tube
furnace,
muffle
artisanal
pyrolysis.
The
resulting
carbons
were
characterized
for
their
adsorptive
capacity
through
the
determination
of
iodine
number
methylene
blue
adsorption;
these
are
key
indicators
specific
surface
area
adsorbent
quality.
Advanced
characterization
techniques
employed,
such
as
scanning
electron
microscopy
(SEM),
which
revealed
highly
porous
irregular
structure,
energy
dispersive
X-ray
spectroscopy
(EDS),
confirming
effective
removal
impurities
optimization
elemental
composition.
Atomic
force
(AFM)
demonstrated
favorable
roughness
adsorption
processes.
Among
samples,
CaDH162-CADH53
exhibited
highest
performance,
with
an
1094.8
mg/g
yield
93.5%,
signifying
high
capacity.
treatments
phosphoric
acid
calcium
carbonate
significantly
improved
further
enhancing
material’s
properties.
In
conclusion,
produced
in
this
optimal
physicochemical
properties
water
purification
contaminant
treatment
applications.
These
findings
highlight
potential
agricultural
waste,
husk,
sustainable
scalable
alternative
industrial-scale
production.
Journal of Separation Science,
Journal Year:
2025,
Volume and Issue:
48(1)
Published: Jan. 1, 2025
The
most
important
aspect
of
sorbent-based
approaches
is
the
use
a
sustainable,
readily
available,
and
cost-effective
sorbent
material
for
sample
analysis.
Biochar
an
emerging
prominent
various
applications
in
techniques
due
to
its
availability,
affordability,
eco-friendly
nature,
porosity,
pore
structure,
abundance
aliphatic
aromatic
carbon
structures,
abundant
oxygen-containing
functional
groups.
On
basis
numerous
benefits
biochar,
this
review
discusses
why
biochar
preferred
sorptive-based
techniques.
In
addition,
provides
brief
evaluation
biochar-based
sorptive
approaches,
including
solid-phase
extraction
(SPE)/microextraction
(SPME),
magnetic
SPE/SPME,
in-tube
SPME,
pipette-tip
micro
SPE,
thin-film
microextraction.
Furthermore,
each
section
briefly
overviews
studies
analyses
applications,
pharmaceuticals,
environmental,
food.
Most
importantly,
on
literature
review,
that
require
further
investigation
applications.
