Environment International,
Journal Year:
2024,
Volume and Issue:
193, P. 109073 - 109073
Published: Oct. 15, 2024
Vanadium(V)
contaminated
soil
is
abundant
in
iron(Fe)
oxides
due
to
co-occurrence
of
V
and
Fe
bearing
minerals.
However,
biogeochemical
transformation
redox-active
soil,
the
bacteria
involved,
has
remained
less
investigated.
This
study
explored
extent
which
microbial
mediated
organic
decomposition
coupled
Fe(III)
reduction
contributed
V(V)
release/reduction
V-contaminated
paddy
under
different
amendments.
Soil
flooding
decreased
toxic
reducible
while
increased
oxidizable
V.
Glucose
straw
promoted
release
with
temporarily
increasing
concentration
by
73.59-106.34
mg/kg
compared
control
treatment
subsequently
decreasing
concentrations
eventually
similar
treatment.
Biochar
incorporation
glucose
amendments
moderately
alleviated
release.
The
significantly
positive
correlation
between
Fe(II)
during
solubilization
process
indicated
a
temporal
coupling
Clostridium
Massilia
reductive
dissolution
release,
Anaeromyxobacter,
Sphingomonas,
Bryobacter,
Acidobacteriaceae
Anaerolineaceae
reduction.
provides
deeper
understanding
biotransformation
C
cycling
suggests
remediation
strategy
for
soils
via
regulating
weaken
or
promote
