Environmental Technology & Innovation,
Год журнала:
2024,
Номер
33, С. 103535 - 103535
Опубликована: Янв. 8, 2024
Phosphogypsum
(PG)
is
the
largest
by-product
of
phosphate
industry.
Nearly
300
M
tons
PG
are
annually
discarded,
which
58%
dry
stacked.
The
exposure
stacks
to
rainwater
and
processed
waters
moisture
creates
hydraulic
pressure,
generating
acidic
leachates
into
nearby
aquifer
systems.
Because
its
elevated
levels
sulfates,
phosphorus
(P)
heavy
metals,
water
leachate
can
negatively
affect
surrounding
environments.
This
work
investigates
effect
activity
on
leaching,
by
studying
different
PG:Water
ratios
leaching
process,
followed
anaerobic
bioremediation
through
biological
sulfate
removal
(BSRA).
later
involves
using
sulfate-reducing
bacteria
consortium
within
an
bioreactor,
allowing
a
simultaneous
monitoring
leachate's
biochemical
changes,
impurities
removal,
microbial
community
dynamics
results
determined
highest
sulfates
from
with
ratio
1:200
(w:v).
Subsequently,
treatment
exhibited
efficient
(79%),
P
(99%)
chemical
oxygen
demand
(93%),
substantial
decline
in
metal
concentrations
(Cd,
As
Al
99%,
Zn
70%)
leachate.
Moreover,
acidity
was
also
neutralized
SRA
process
increasing
pH
4
7.52.
Furthermore,
unveiled
significant
correlation
between
changes
co-existence
specific
phyla,
including
Desulfobacterota,
Firmicutes,
Proteobacteria,
eco-friendly
npj Sustainable Agriculture,
Год журнала:
2023,
Номер
1(1)
Опубликована: Окт. 4, 2023
Abstract
While
it
remains
debated
if
mineral
deposits
mined
for
phosphorus
fertilizer
are
running
out,
insecurity
is
an
emerging
global
issue.
We
explore
how
linked
to
the
current
linear
economy
(LPE)
and
historic
implications.
The
problems
multifold:
there
geopolitical
concerns
over
held
only
by
a
few
nations,
sharply
rising
costs
of
fertilizers,
heavy
metal
contaminants
affecting
soil
food,
problematic
mining
wastes,
environmental
degradation
caused
inefficiencies.
Here
we
argue
that
new
can
resolve
these
problems.
Transitioning
sustainable
use
demands
circular
(CPE).
A
CPE
supports
several
Sustainable
Development
Goals
enables
greater
autonomy.
illustrate
with
case
studies
outline
opportunities
change.
will
feature
recovery
facilities,
waste
valorisation
technologies,
improved
formulations
customized
target
crops
crop
systems.
highlight
examples
rapidly
advancing
essential
agriculture.