The Science of The Total Environment,
Год журнала:
2023,
Номер
906, С. 167376 - 167376
Опубликована: Сен. 25, 2023
To
improve
the
effectiveness
and
durability
of
wastewater
treatment
technologies,
researchers
are
showing
a
growing
interest
in
3D
printing
technology.
This
technology
has
attracted
significant
owing
to
its
ability
fabricate
challenging
complex
geometries
using
different
material
compositions.
manuscript
is
focused
on
development
monoliths
from
noncommercial
filaments,
i.e.,
powder
blend
iron
oxide
polylactic
acid
(PLA)
at
15
wt%
former.
Different
monolith
designs
have
been
prepared
fluid
dynamics
process,
so
simple
cylinder
(15-Fe3O4@PLA)
with
double
length
an
internal
mesh
(15-Fe3O4@PLA-DM)
were
used.
These
characterized
by
Scanning
electron
microscopy
(SEM),
Differential
scanning
calorimetry
(DSC)
Mössbauer
spectroscopy,
then
used
for
water-based
ofloxacin
degradation
continuous
down-up
flow
configuration.
Additionally,
computational
simulations
performed
estimate
rate
constants
analyze
distribution
velocity
pollutant
concentration
along
15-Fe3O4@PLA-reactor.
The
oxidant
dose
was
also
optimized
develop
highest
rate.
target
those
55
82
%
under
conditions.
In
addition,
15-Fe3O4@PLA-DM
operated
long
term
experiments,
keeping
performance
good
67
up
120
h.
Finally
fixed-bed
reactor
mounted
printed
pellets
mixture
(15:85),
Fe3O4:PLA,
after
being
ground
range
125-200
μm.
Under
this
setup
configuration,
we
observed
total
ofloxacin.
cheap,
reproducible
time
saving
supported
catalysts
comparison
conventional
deposition
techniques.
Moreover,
leaching
active
sites
streams
largely
diminished.
fact
operation
leached
Fe
below
0.1
ppm,
corroborating
adhesion
catalyst
PLA
support.
Water,
Год журнала:
2024,
Номер
16(3), С. 400 - 400
Опубликована: Янв. 25, 2024
Safeguarding
drinking
water
is
a
major
public
health
and
environmental
concern
because
it
essential
to
human
life
but
may
contain
pollutants
that
can
cause
illness
or
harm
the
environment.
Therefore,
continuous
research
necessary
improve
treatment
methods
guarantee
its
quality.
As
part
of
this
study,
effectiveness
coagulation–flocculation
using
aluminum
sulfate
(Al2(SO4)3)
was
evaluated
on
very
polluted
site.
Samplings
were
taken
almost
every
day
for
month
from
site,
samples
characterized
by
several
physicochemical
properties,
such
as
hydrogen
potential
(pH),
electrical
conductivity,
turbidity,
organic
matter,
ammonium
(NH+4),
phosphate
(PO43−),
nitrate
(NO3−),
nitrite
(NO2−),
calcium
(Ca2+),
magnesium
(Mg2+),
total
hardness
(TH),
chloride
(Cl−),
bicarbonate
(HCO3−),
(SO42−),
iron
(Fe3+),
manganese
(Mn2+),
(Al3+),
potassium
(K+),
sodium
(Na+),
complete
alkalimetric
titration
(TAC),
dry
residue
(DR).
Then,
these
treated
with
Al2(SO4)3
jar
test
method,
which
common
method
determine
optimal
amount
coagulant
add
based
characteristics.
A
mathematical
model
had
been
previously
created
support
vector
machine
predict
dose
according
parameters
temperature,
pH,
TAC,
turbidity.
This
step
repeated
at
end
each
year,
second
characterization
carried
out
in
order
compare
them
those
raw
water.
The
results
showed
effective
elimination
various
pollutions,
high
rate,
thus
demonstrating
Al2(SO4)3.
measured
after
significant
reduction
majority
parameters.
These
demonstrated
eliminating
pollutions
present
They
also
stress
importance
continued
field
quality
protect
Magnetochemistry,
Год журнала:
2023,
Номер
9(5), С. 119 - 119
Опубликована: Апрель 27, 2023
Iron
oxide
compounds
have
naturally
formed
during
the
whole
of
Earth’s
history.
Synthetic
compositions
with
iron
oxides
are
produced
use
various
techniques
and
widely
used
for
scientific
applied
purposes.
This
review
considers
an
attempt
to
classify
all
information
on
different
compound
formation
mechanisms
intended
applications
in
biomedicine,
catalysis,
waste
remediation,
geochemistry,
etc.
All
literature
references
analyzed
were
divided
into
several
groups
by
their
number
included
compounds:
containing
only
one
(e.g.,
magnetite
or
wüstite),
including
polymorphs
iron(III)
(α-,
β-,
γ-,
ε-,
ζ-,
δ-Fe2O3);
two
distinguishable
phases
maghemite
hematite);
non-crystalline
(amorphous
atomic
clusters);
mixed
(indistinguishable
separate
phases).
Diagrams
distribution
between
built.
Finally,
outlook
perspectives
further
studies
is
provided.
Chemical Engineering Journal,
Год журнала:
2024,
Номер
490, С. 151725 - 151725
Опубликована: Апрель 27, 2024
Addressing
the
ecological
risks
and
human
health
threats
posed
by
emerging
contaminants
requires
development
of
reproducible
scalable
materials
technologies.
In
this
context,
performance
multicore
flower-shaped
nanoparticles
(NFs)
with
approximately
40
nm
diameters
was
assessed
for
extracting
degrading
polyethylene
microplastics
found
in
cosmetics
from
water
samples.
These
NFs,
exhibiting
cooperative
magnetic
behavior
high
moment
per
particle,
were
synthesized
a
larger
reactor
(1
L),
yielding
quantities
91
%
mean
reproducibility.
The
NFs
directly
attached
to
microplastic
surfaces
via
ultrasonic
treatment
separated
using
permanent
magnet,
demonstrating
removal
capacities
up
1000
mgMP/gNF
under
optimal
conditions
(pH
7,
10
mg
30
min,
field
strength
320
kA/m).
Subsequently,
aqueous
suspensions
hydrolyzed
at
150
°C
followed
mineralization
through
Fenton-like
reaction
catalyzed
where
reactive
oxygen
species
produced,
presence
H2O2,
break
organic
molecules.
Mineralization
yields
ranged
20
75
90
°C,
further
increase
78
achieved
an
alternating
(60
mT,
100
kHz),
obviating
need
temperatures.
results
highlight
potential
associated
technologies
effectively
addressing
challenges
contaminants,
offering
promising
avenues
environmental
remediation
protection.
ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(27), С. 32162 - 32176
Опубликована: Июнь 30, 2023
Magnetic
iron
oxide
mesocrystals
have
been
reported
to
exhibit
collective
magnetic
properties
and
consequently
enhanced
heating
capabilities
under
alternating
fields.
However,
there
is
no
universal
mechanism
fully
explain
the
formation
pathway
that
determines
particle
diameter,
crystal
size,
shape
of
these
their
evolution
along
with
reaction.
In
this
work,
we
analyzed
cubic
by
thermal
decomposition
in
organic
media.
We
observed
a
nonclassical
leads
via
attachment
crystallographically
aligned
primary
particles
grows
through
sintering
time
achieve
sizable
single
crystal.
case,
solvent
1-octadecene
surfactant
agent
biphenyl-4-carboxylic
acid
seem
be
key
parameters
form
as
intermediates
reaction
presence
oleic
acid.
Interestingly,
hyperthermia
efficiency
aqueous
suspensions
strongly
depend
on
degree
aggregation
cores
forming
final
particle.
The
highest
saturation
magnetization
specific
absorption
rate
values
were
found
for
less
aggregated
mesocrystals.
Thus,
stand
out
an
excellent
alternative
biomedical
applications
properties.
