Environmental Engineering Science,
Год журнала:
2024,
Номер
41(10), С. 401 - 412
Опубликована: Авг. 8, 2024
Phosphorus
in
wastewater
from
pressed
vegetables
is
a
significant
contributor
to
water
pollution,
emphasizing
the
importance
of
its
removal
and
recycling
for
ecological
management.
In
this
study,
an
improved
method
coprecipitation
pyrolysis
Mg(OH)2
FeCl3•6H2O
was
used
successfully
synthesize
iron-magnesium
biochar
composite
(FeMg@BC2)
corn
cob.
Compared
with
iron-modified
(Fe@BC),
magnesium-modified
(Mg@BC),
iron–magnesium-modified
(FeMg@BC1)
prepared
by
traditional
methods,
iron–magnesium
had
higher
yield,
specific
surface
area,
crystallinity.
The
study
investigated
impact
modified
dosage,
initial
solution
pH,
coexisting
ions
on
adsorption
capabilities
phosphate
removal.
results
demonstrated
that
addition
1.0
g/L
FeMg@BC2
highly
effective
removing
simulated
when
concentration
80
mg/L,
achieving
rate
exceeding
95%.
Using
isotherm
model,
maximum
capacities
Fe@BC,
Mg@BC,
FeMg@BC1,
were
estimated
be
40.76,
46.97,
96.78,
107.97
mg/g,
respectively.
Particularly,
exhibited
superior
capacity,
mechanism
mainly
included
electrostatic
attraction,
precipitation,
ligand
exchange.
desorption
test
phosphorus-loaded
revealed
rates
vegetable
using
0.5M
NaOH
92.2%
84.8%,
After
three
cycles
wastewater,
phosphorus
efficiency
at
remained
about
50%.
Therefore,
utilization
recovery
showed
promising
potential.
Processes,
Год журнала:
2024,
Номер
12(8), С. 1552 - 1552
Опубликована: Июль 25, 2024
This
study
investigates
the
synthesis,
characterization,
and
environmental
application
for
amoxicillin
(AMX)
removal
in
batch
mode
of
three
novel
calcium-rich
biochars.
These
biochars
were
produced
from
co-pyrolysis
poultry
manure,
date
palm
wastes,
waste
marble
powder
at
temperatures
700
°C
(Ca-B-700),
800
(Ca-B-800),
900
(Ca-B-900).
Characterization
results
show
that
increasing
pyrolysis
temperature
improved
structural,
textural,
surface
chemistry
properties.
For
instance,
BET
area
Ca-B-900
was
assessed
to
be
52.3
m2
g−1,
which
is
14.1
3.1
times
higher
than
those
observed
Ca-B-700
Ca-B-800,
respectively.
Moreover,
shows
AMX
ability
(56.2
mg
g−1)
Ca-B-800
(46.8
g−1),
(14.6
numerous
other
engineered
The
process
by
these
favorable
under
wide
experimental
conditions
initial
pH
concentrations.
Additionally,
modeling
data
adsorption
includes
both
physical
chemical
mechanisms.
confirms
Ca-rich
can
perform
significant
mode.
Chemosphere,
Год журнала:
2024,
Номер
358, С. 142130 - 142130
Опубликована: Апрель 27, 2024
Phosphorus
(P)
and
Ammonium
Nitrogen
(N)
are
essential
nutrients
for
plants
environmental
stability.
However,
their
excess
in
water
causes
eutrophication,
damaging
aquatic
ecosystems.
While
adsorption
is
a
promising
solution,
finding
affordable
efficient
adsorbents
remains
challenge.
In
this
study,
magnesium
(Mg),
iron
(Fe),
Mg/Fe
doped
biochars
(BC)
were
synthesized,
evaluated
of
individual
P
N
+
mixture
from
solution
wastewater
treatment
plant.
Compared
to
other
adsorbents,
Mg/BC
showed
excellent
performance
adsorbing
phosphorus
ammonium
nitrogen
aqueous
solutions.
It
demonstrated
large
capacity
64.65
mg/g
62.50
solutions,
30.3
27.67
the
respectively.
addition,
efficiently
removed
real-life
wastewater.
real
wastewater,
removal
efficiencies
reached
88.30%
59.36%,
Kinetics
analysis
revealed
that
pseudo-second-order
model
accurately
described
all
The
adsorbent
followed
monolayer-Langmuir
isotherm
ions
multilayer-Freundlich
P,
indicating
processes.
Thermodynamic
experiments
indicated
was
not
only
feasible
but
also
occurred
spontaneously
natural
manner.
This
study
strategic
modification
biochar
plays
crucial
role
advancing
effective
technologies
designed
nutrient
removal.
Industrial & Engineering Chemistry Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Cerium-based
adsorbents
are
effective
for
the
removal
of
phosphate
from
water,
with
reactivity
cerium
dioxide
(CeO2)
being
highly
dependent
on
exposed
crystal
facets.
However,
molecular-level
interactions
that
control
facet-dependent
toward
adsorption
remain
elusive.
In
this
study,
we
synthesized
CeO2
nanostructures
distinct
morphologies─rods
(CeO2-R),
octahedrons
(CeO2-O),
and
cubes
(CeO2-C)─that
predominantly
expose
(110),
(111),
(100)
facets,
respectively.
Phosphate
various
facets
was
systematically
investigated
through
a
series
batch
experiments,
complemented
by
Fourier
transform
infrared
(FTIR)
spectroscopy
density
functional
theory
(DFT)
calculations.
The
follows
second-order
kinetics
aligns
Langmuir
isotherm
model.
This
process
is
facilitated
formation
inner-sphere
complexes
between
Ce–OH
groups
surface
ions.
performance
significantly
influenced
geometric
configuration
normalized
capacity
to
area
following
trend
CeO2-R
>
CeO2-C
CeO2-O.
These
results
may
have
strong
implications
prediction
fate
contaminants
at
solid–liquid
interface
optimization
advanced
adsorbent
materials
water
treatment
applications.
