Phosphate
fertilizers
are
produced
using
phosphoric
acid
as
a
vital
chemical
component.
This
essential
ingredient
is
typically
derived
from
phosphate
rock,
through
wet
process
(WPPA).
However,
the
WPPA
contains
impurities,
including
heavy
metals
(HMs),
unwanted
elements,
and
other
valuables
notably
rare
earth
elements
(REEs).
The
current
study
aims
to
develop
novel
for
simultaneous
selective
recovery
of
HMs
REEs
solvent
extraction
WPPA.
Single-stage
extraction,
cascade
synergistic
were
explored,
gain
deeper
understanding
mechanisms
identify
most
efficient
process.
90,
80
99%
Y,
Ho
Yb,
respectively,
extracted
D2EHPA.
While
89%
Zn,
Cu
Cd,
removed
Cyanex
301.
60%
74%
Y
78%
stripped
H2SO4,
while
98%
Cd
Zn
HCl.
organic
phase
can
be
successfully
reused
twice
more
with
an
effective
stripping.
Oxalic
(C2H2O4)
was
employed
precipitate
REEs.
sodium
carbonate
(Na2CO3)
used
HMs.
Finally,
carried
out
on
solution
unsure
performance
under
industrial
conditions.
Process Safety and Environmental Protection,
Год журнала:
2024,
Номер
184, С. 190 - 207
Опубликована: Фев. 3, 2024
The
industrial
activity
has
increased
with
the
world's
population
in
urban
and
non-urban
environments.
Sulphate
(SO42-)
is
commonly
found
aquatic
ecosystems
generally
non-toxic
to
life,
unless
present
very
high
concentrations
an
environment
affected
by
human
activities.
Nowadays,
there
been
growing
interest
bioremediation
of
SO42-
wastewater
as
a
sustainable
viable
method
advantages
employing
microorganism.
This
paper
provides
overview
sulfur
biogeochemical
cycle,
microbiology
sulphate-reducing
bacteria
(SRB),
their
application
treating
laden
wastewater,
crucial
factors
influencing
removal
efficiency,
more
importantly,
explores
potential
for
metal
recovery
from
mining
waste,
along
source
electron
donors.
Previous
studies
this
field
have
shown
that
other
pollutants
matrix
chemistry,
such
temperature,
pH,
sulfide
concentration,
ionic
strength,
nutrients
moisture,
redox
condition,
bioavailability
toxic
ions.
Apart
these
results,
than
90%
potentially
elements
(PTEs)
can
be
removed
desired
bacteria.
Although
disadvantages,
it
remains
removing
PTEs
anions
SO42--rich
wastewater.
In
future,
SRB
combination
organic
compounds
donors
adsorbents
suggested
effective
solution
bioremediation,
metals
recovery.
Heliyon,
Год журнала:
2023,
Номер
9(9), С. e19768 - e19768
Опубликована: Сен. 1, 2023
Anaerobic
digestion
(AD)
is
the
primary
technology
for
energy
production
from
wet
biomass
under
a
limited
oxygen
supply.
Various
wastes
rich
in
organic
content
have
been
renowned
enhancing
process
of
biogas
production.
However,
several
other
intermediate
unwanted
products
such
as
hydrogen
sulfide,
ammonia,
carbon
dioxide,
siloxanes
and
halogens
generated
during
process,
which
tends
to
lower
quality
quantity
harvested
biogas.
The
removal
sulfide
wastewater,
potential
substrate
anaerobic
digestion,
using
various
technologies
covered
this
study.
It
recommended
that
microaeration
would
increase
higher
efficiency
based
on
number
benefits
specific
method.
primarily
accomplished
by
dosing
smaller
amounts
digester,
increases
system's
oxidizing
capacity
rendering
sulfate
reducing
bacteria
responsible
converting
ions
inactive.
This
paper
reviews
physicochemical
biological
methods
place
eliminate
effects
wastewater
treated
anaerobically
future
direction
remove
produced.
