The Solidification and Stabilization of Pb in Soil using Apatite-modified Biochar
Abstract
In
this
study,
biochar
(BC)
was
prepared
by
pyrolysis
using
sesame
straw
as
the
precursor,
and
modified
with
hydroxyapatite
chloroapatite
to
prepare
hydroxyapatite-modified
(HBC)
chloroapatite-modified
(BC-Cl),
respectively.
The
changes
in
functional
groups
before
after
modification
were
investigated
various
characterization
methods,
passivation
effects
of
BC,
HBC,
BC-Cl
on
lead
(Pb)
soil
studied.
three
types
introduced
into
contaminated
at
ratios
3%
5%
passivate
soil.
After
remediation,
effective
Pb
content
decreased
45.45%,
76.70%,
82.38%,
respectively,
compared
control
(CK)
group.
Moreover,
increased
dosage.
When
cultured
for
90
d,
reducible
22.03%,
22.97%,
26.36%,
while
residual
state
76.22%,
88.31%,
103.53%,
CK.
effectively
passivated
soil,
5%BC-Cl
sample
exhibiting
most
pronounced
effect.
This
study’s
findings
offer
a
new
method
efficient
utilization
provide
reference
developing
apatite-based
remediation
materials.
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 2, 2024
Language: Английский