Proceedings of universities Applied chemistry and biotechnology,
Journal Year:
2025,
Volume and Issue:
15(1), P. 67 - 81
Published: April 7, 2025
The
study
was
aimed
at
comparing
the
effect
of
oil,
diesel
fuel,
and
motor
oil
on
capillary
moisture
capacity
hygroscopic
content
gray
forest
soil,
as
well
assessing
changes
in
these
characteristics
oil-contaminated
soils
following
their
washing
with
polysorbate
80.
Water
a
solution
(with
detergent
concentrations
1,
5,
10
g/L)
were
added
to
soil
be
continuously
mixed
for
1
h
20
°С
using
shaker
(60
rpm).
analyzed
agrophysical
are
shown
decrease
when
contaminated
50,
150,
300
mL/kg.
is
more
pronounced
than
those
fuel
similar
concentrations,
while
is,
conversely,
less
pronounced.
80
partially
restored
characteristics;
however,
they
remained
lower
original
samples.
effectiveness
also
confirmed
by
reduction
phytotoxicity
samples
solutions.
At
level
contamination
up
150
mL/kg,
solutions
containing
5
g/L
found
effective,
whereas
it
recommended
increase
concentration
g/L.
weight
ratio
solution,
water
1:1:4.
Thus,
prospects
mitigate
negative
impact
demonstrated.
Perfluorooctanoic
acid
(PFOA),
a
persistent
organic
pollutant,
is
gaining
attention
for
its
detrimental
effects
on
human
health
and
ubiquity
in
aquatic
environments.
Herein,
we
introduce
novel
foam
fractionation
method
that
uses
Janus
nanoparticles
as
stabilizers
collectors
the
efficient
removal
enrichment
of
PFOA
from
water.
The
amphiphilic
Janus-SiO2
(SNPs)
were
successfully
synthesized
through
anisotropic
modification
with
perfluoroalkylsilanes
aminosilanes.
amphiphilicity
constructed
F17-SNPs-N2
enhanced
stability
due
to
high
detachment
energy
bridging
mechanism.
fluorine
amino
groups
surface
facilitated
adsorption
via
fluorine-fluorine
interactions,
hydrophobic-hydrophobic
hydrogen
bonding,
electrostatic
attraction,
supported
by
experimental
analysis
DFT
calculation.
We
also
explored
mechanisms
governing
under
different
parameters.
Under
optimal
conditions,
achieved
efficiencies
ratios
98%
98,
respectively,
within
bubbling
duration
180
s.
F17-SNPs-N2,
bifunctional
material
fractionation,
demonstrated
reusability
excellent
performance
even
presence
competing
contaminants,
highlighting
broad
environmental
application
potential.
This
research
provides
strategy
designing
Janus-based
agents
post-modification
enhances
our
understanding
behind
highly
fractionation.
Brazilian Journal of Radiation Sciences,
Journal Year:
2025,
Volume and Issue:
12(4A (Suppl.)), P. e2625 - e2625
Published: Feb. 19, 2025
The
presence
of
surfactants
and
other
emerging
pollutants
in
water
bodies
has
become
a
major
environmental
concern
several
places
around
the
world,
since
these
cause
adverse
problems
aquatic
ecosystems
compromise
public
health,
regarding
supply
good
quality
water.
These
often
originate
from
various
sources,
including
industrial
activities,
pharmaceuticals,
personal
care
products.
A
critical
aspect
this
issue
is
that
many
their
mixtures
are
difficult
to
degrade
biological
treatment
processes,
requiring
auxiliary
treatments.
Electron
beam
technology
been
applied
matrices
pollutants,
helping
not
only
increase
degradability,
as
also
reduce
toxicity
compounds.
present
work
aimed
evaluate
LAS
surfactant
single
combined
effects
with
(caffeine
ciprofloxacin
antibiotic)
organism
Daphnia
similis.
It
was
evaluated
electron
(EB)
for
reducing
organisms
were
exposed
samples
(non-irradiated
irradiated
mixtures)
48
hours
observed
effect
immobility.
through
EC50
(median
effective
concentration)
calculations.
values
showed
high
level
EC50s
below
9%.
Caffeine
Ciprofloxacin
data
higher
than
20%.
EC50%
of
close
isolated
After
EB
(5
kGy)
about
70%
acute
reduction
obtained
surfactant.
requires
comprehensive
approach
monitoring
mitigating
impacts
protect
human
health.
Membranes,
Journal Year:
2025,
Volume and Issue:
15(2), P. 43 - 43
Published: Feb. 2, 2025
The
efficiency
of
integrated
treatment
systems
for
wastewater
generated
during
the
washing
disinfectant
production
lines
was
investigated.
high
organic
load
(COD
2000
mg/L,
TOC
850
mg/L)
and
300
mg/L
toxic
benzalkonium
chloride
(BAC)
make
an
environmental
hazard
that
requires
advanced
treatment.
Initial
tests
on
model
BAC
solutions
(in
concentrations
corresponding
to
those
found
in
wastewater),
using
nanofiltration
ultrafiltration
membranes,
resulted
up
70%
retention
BAC.
To
enhance
purification,
ion
exchange
adsorption
were
introduced
as
post-membrane
steps.
In
second
part
investigation,
membrane
modules
characterized
by
best
separation
properties
together
with
macroporous
cation-exchange
resin
activated
carbon
into
purification
system
treat
wastewater.
research
carried
out
showed
multicomponent
is
a
complex
task.
Significantly
lower
removal
(30%)
achieved
processes
compared
systems,
concentration
reduced
100
200
COD
120
mg/L.
