Materials Research Express,
Journal Year:
2024,
Volume and Issue:
11(11), P. 115505 - 115505
Published: Nov. 1, 2024
Abstract
The
surface
of
Philippine
natural
zeolites
(PNZs)
was
modified
using
the
surfactant
hexadecyltrimethylammonium
chloride
(HDTMA-Cl)
to
improve
its
adsorption
capacity
sulfamethoxazole
(SMX),
a
persistent
organic
pollutant
and
emerging
contaminant.
PNZs
were
with
HDTMA
based
on
their
100%
200%
external
cation
exchange
(ECEC)
form
monolayer
bilayer
HDTMA–modified
(MHZ
&
BHZ).
unmodified
(UZs)
surfactant–modified
(SMNZs)
characterized
Fourier
Transform
Infrared
Spectroscopy,
Thermogravimetric
Analysis-Derivative
Thermogravimetry,
Scanning
Electron
Microscopy
Energy
Dispersive
x-ray
X-Ray
Diffraction
confirm
modification
HDTMA.
SMX
UZ
SMNZs
fitted
isotherm
kinetic
models.
It
determined
that
all
showed
high
degree
linearity
relative
Langmuir,
Freundlich,
Temkin
maximum
MHZ
BHZ
calculated
be
3.685
mg
g
−1
13.034
,
respectively,
exhibiting
1.6
times
5.5
more
improved
than
UZ.
Kinetic
models
SMNZ
adhered
pseudo-second
order
model.
results
this
study
highlight
promising
increased
SMNZs.
Environmental Pollution,
Journal Year:
2023,
Volume and Issue:
343, P. 123199 - 123199
Published: Dec. 20, 2023
Antibiotics
are
a
contaminant
class
of
worldwide
concern
as
they
frequently
detected
in
aquatic
ecosystems.
To
better
understand
the
impacts
antibiotics
on
ecosystems,
we
conducted
an
outdoor
mesocosm
experiment
which
communities
were
exposed
to
different
concentrations
antibiotic
sulfamethoxazole
(0,
0.15,
1.5,
15
and
150
μg/L).
These
include
mean
(0.15
μg/L)
maximum
(15
ecosystems
worldwide.
Sulfamethoxazole
was
applied
once
week
for
eight
consecutive
weeks
1530
L
mesocosms
Netherlands,
followed
by
eight-week
recovery
period.
We
evaluated
phytoplankton-,
bacterial-
invertebrate
responses
during
after
exposure
assessed
organic
matter
decomposition.
Contrary
our
expectations,
consistent
treatment-related
effects
algal
bacterial
could
not
be
demonstrated.
In
addition,
did
significantly
affect
zooplankton
macroinvertebrate
communities.
However,
some
specific
taxa
observed,
with
increase
Mesostoma
flatworm
abundance
(NOEC
<0.15
eDNA
analyses
indicated
negative
insects
Odonata
at
concentration
μg/L.
Overall,
environmentally
relevant
result
direct
or
indirect
impairment
entire
ecological
processes
mesocosms.
several
demonstrated
significant
(in)direct
from
sulfamethoxazole.
Comparison
results
literature
showed
inconsistent
between
studies
using
comparable,
relevant,
concentrations.
Therefore,
study
highlights
importance
testing
pharmaceuticals
(such
sulfamethoxazole)
across
multiple
trophic
levels
spanning
communities,
fully
its
potential
threats.
Plants,
Journal Year:
2025,
Volume and Issue:
14(9), P. 1277 - 1277
Published: April 22, 2025
Contamination
of
agricultural
ecosystems
with
antibiotics
including
sulfamethoxazole
(SMX)
can
create
favorable
conditions
to
increase
bacterial
abundance
in
soil
antibiotic-resistant
genes
and
also
affect
plants.
The
aim
this
research
was
assess
the
phytotoxicity
tomato
after
irrigation
SMX
degraded
20
min
using
non-thermal
plasma-ozonation
technique
(T20).
To
achieve
this,
two
experiments
were
performed
at
scales
Petri
dishes
pots
Solanum
lycopersicum
L.
species,
cultivar
Zaraza,
subjected
treatments
that
compared
a
distilled
water
control.
In
plates,
T20
solution
improved
root
length
seedling
vigor
indexes,
but
germination
index,
speed,
biomass
slightly
decreased.
soil,
although
reduced
length,
their
growth
not
inhibited
(15.3%),
while
plates
they
exhibited
promotion
effect
90%
more
than
physical–chemical
geochemical
variables
measured
suitable
for
crop
characteristics
plant
showed
statistically
significant
variations
harvesting.
T20-treated
shoots,
SMX,
better
results
obtained
assimilatory
pigments,
biomass,
thus
selectively
reducing
depending
on
endpoints,
type
control,
methods
tested.
Highlights in Science Engineering and Technology,
Journal Year:
2025,
Volume and Issue:
139, P. 144 - 152
Published: April 28, 2025
Predator-prey
models
are
valuable
in
predicting
population
dynamics
and
revealing
the
feedback
effects
of
factors
such
as
sex
ratio
on
ecosystem
diversity.
Specifically,
this
study
innovatively
constructed
a
small-scale
differential
equation
model
with
quadratic
correction
term
for
ratio.
It
approximately
linearly
fitted
functional
relationship
between
food
availability.
Subsequently,
several
sets
computer
simulations
were
designed
to
iteratively
under
externally
uncertain
factors.
The
simulation
results
showed
that
biodiversity
index
H
peaked
at
about
0.74
when
reached
0.
while
possessed
highest
species
richness.
In
addition,
varied
0.56
0.78,
number
predators
increased
by
an
average
15%
per
generation
proportion
males
increased,
prey
correspondingly
decreased
10%.
Meanwhile,
Shannon-Wiener
H-value
nonlinearly
increase
less
than
0.74,
began
decrease
slowly
exceeded
0.74.
show
has
significant
effect
level
