Contribuciones a las Ciencias Sociales,
Journal Year:
2023,
Volume and Issue:
16(12), P. 32050 - 32064
Published: Dec. 19, 2023
O
glifosato
é
o
herbicida
mais
vendido
em
todo
mundo
devido
à
sua
versatilidade
no
controle
de
ervas
daninhas
e
ao
uso
extensivo
culturas
resistentes.
Este
estudo
avaliou
remoção
do
comercial
presente
soluções
aquosas
por
adsorção
com
carvão
ativado.
planejamento
experimental
tipo
fatorial
completo
foi
utilizado
para
avaliar
os
efeitos
das
variáveis
concentração
inicial,
massa
adsorvente,
pH
tempo
percentual
(REM%)
na
quantidade
adsorvida
(QT).
Os
resultados
apontaram
que
a
dependente
da
aplicada
experimento,
sendo
esta
variável,
maior
relevância
ponto
vista
estatístico.
A
capacidade
máxima
14,63
mg.g-1,
este
um
resultado
relevante
ser
superior
quando
comparado
estudos
semelhantes.
obtidos
mostram
eficiência
aproximadamente
98%
glifosato,
uma
dosagem
adsorvente
0,05g.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(13), P. 5741 - 5741
Published: July 5, 2024
Glyphosate
(GLY),
one
of
the
most
used
pesticides
in
world,
has
been
frequently
detected
water,
posing
chronic
and
remote
hazards
to
human
health
environment.
Consequently,
it
become
necessary
develop
efficient
sustainable
treatment
processes
able
remove
GLY
from
polluted
aquatic
environments.
In
this
context,
use
advanced
oxidation
is
great
interest,
as
allows
for
a
significant
reduction
concentrations
recalcitrant
pollutants.
study,
peracetic
acid
(PAA)
was
first
time
water.
particular,
process
parameters
(oxidant
dose,
activation
by
UV
radiation,
concentration,
time)
were
optimized
using
central
composite
design
(CCD)
response
surface
methodology
(RSM).
The
degradation
pollutant,
i.e.,
GLY,
monitored
ion
chromatography,
optimizing
instrumental
parameters.
During
process,
residual
oxidant
also
constantly
reference
methods
(i.e.,
UV-visible
spectroscopy).
Based
on
results
obtained,
best
removals
(over
90%)
achieved
under
following
conditions:
PAA/GLY
molar
ratio
3
(concentration
3.0
mg/L
4.0
PAA),
irradiation,
45
min.
possibility
achieving
total
glyphosate
removal
small
amounts
increases
environmental
sustainability
proposed
pollution
mitigation
strategy.
Glyphosate
(PMG)
is
a
globally
used
broad-spectrum
herbicide
and
receives
environmental
concerns
because
of
its
moderate
persistence
potential
carcinogenicity.
Traditional
PMG
treatment
methods
often
suffer
from
the
generation
more
toxic
persistent
aminomethylphosphonic
acid
(AMPA)
intermediate.
Herein,
we
develop
green
method
with
ferrihydrite
(FH)
CaO2
(FH/CaO2)
via
regulating
coordination
FH
Ca2+,
where
phosphonate
group
preferentially
binds
to
carboxylate
side
complexes
Ca2+
released
by
CaO2,
forming
FH-PMG-Ca
ternary
surface
complex.
This
unique
complex
can
redistribute
electrons
within
molecule
for
C-P
activation
C-N
bond
stabilization,
favoring
selective
attack
superoxide
radical
produced
Fenton
reaction
between
CaO2-derived
H2O2
FH,
thus
generating
environment-friendly
glycine
instead
AMPA.
The
FH/CaO2
process
realizes
over
99%
degradation
in
industrial
wastewater
1
h,
residual
<
0.1
ppm
AMPA
40
ppb.
More
importantly,
consumption
was
as
low
3.1
mg
CaO2/mg
PMG,
one-fifth
those
previously
reported
CaO2-based
counterparts.
study
provides
an
effective
strategy
highlights
importance
modes
on
pathway
PMG.
Plants,
Journal Year:
2023,
Volume and Issue:
12(21), P. 3721 - 3721
Published: Oct. 30, 2023
The
tomato
crop
is
very
sensitive
to
stress
conditions.
A
water
deficit
defined
as
when
precipitation
less
than
the
evapotranspiration
(ETc)
of
in
a
given
period,
and
this
scenario
climate
change,
it
identified
responsible
for
global
productivity
losses.
use
potential
technologies
better
irrigation
management,
such
electromagnetically
treated
water,
remains
controversial.
Thus,
objective
present
work
was
investigate
effects
low-frequency
electromagnetic
resonance
field
treatment
on
crops
submitted
different
rates.
For
this,
an
experiment
carried
out
under
controlled
conditions
with
types
water:
(WTVLF)
untreated
(UNW),
well
four
replacement
rates:
40,
60,
80,
100%
ETc.
using
commercial
equipment
AQUA4D®.
pots
five
replications
per
treatment.
Lower
activity
SOD,
POD,
CAT,
APX
enzymes
observed
plants
irrigated
fields
(WTVLF),
indicating
oxidative
caused
by
deficit.
Water
reduced
chlorophyll
content,
but
were
harmful
WTVLF
water.
resulted
accumulation
dry
matter
linear
relationship.
However,
showed
increments
about
20%
fruit
production
concerning
independent
We
can
conclude
that
be
solution
reduce
damage
deficits
increase
crops.
Processes,
Journal Year:
2024,
Volume and Issue:
12(5), P. 887 - 887
Published: April 27, 2024
Pesticides
ensure
greater
productivity
in
less
time;
however,
they
spread
beyond
the
perimeters
to
which
are
applied
reach
non-target
organisms,
thereby
affecting
plant,
animal,
and
human
health.
Thiamethoxam
(TMX)
is
considered
be
one
of
main
agents
responsible
for
poisoning
bees
potentially
contaminating
surface
groundwater.
Conventional
water-treatment
protocols
unable
degrade
thiamethoxam;
therefore,
electrochemically
advanced
oxidative
processes
(EAOPs)
have
become
promising
alternatives
owing
their
ease
operation
cost-effectiveness.
Herein,
we
examined
use
EAOPs
oxidize
thiamethoxam
commercial
Actara®
analyzed
treatment
efficiencies
through
phytotoxicity
studies
using
cucumber
maize
seeds
as
bioindicators.
In
addition,
cost
each
process
was
based
on
resulting
current
efficiency.
The
treated
solutions
were
used
germinate
that
total
protein,
hydrogen
peroxide,
lipid
peroxidation
(MDA),
superoxide
dismutase
(SOD),
catalase
(CAT)
activities.
found
effectively
TMX,
with
more
than
50%
degraded
80%
COD
removed
under
all
conditions,
even
when
product
used.
photoelectro-Fenton
10
mg
L−1
FeSO4
100
H2O2
exhibited
best
results,
79%
TMX
83%
removed,
additionally
exhibiting
lowest
estimated
operating
(USD
1.01
dm−3).
Higher
enzymatic
SOD
CAT
activities,
protein
content,
concentration
observed;
no
significant
changes
MDA
recorded.
This
protocol
oxidizes
reduces
its
seedlings.
Plants,
Journal Year:
2023,
Volume and Issue:
12(22), P. 3811 - 3811
Published: Nov. 9, 2023
Due
to
the
worldwide
water
supply
crisis,
sustainable
strategies
are
required
for
a
better
use
of
this
resource.
The
magnetic
has
been
shown
have
potential
improving
irrigation
efficacy.
However,
lack
modelling
methods
that
correspond
experimental
results
and
minimize
error
is
observed.
This
study
aimed
estimate
replacement
rates
provided
by
lettuce
production
using
mathematical
model
based
on
fuzzy
logic
compare
multiple
polynomial
regression
analysis
model.
A
greenhouse
was
conducted
with
two
types
water,
(MW)
conventional
(CW),
five
levels
(25,
50,
75,
100
125%)
crop
evapotranspiration.
Plant
samples
biometric
were
taken
at
14,
21,
28
35
days
after
transplanting.
data
analyzed
via
modeling,
followed
an
inference
models
comparison
between
methods.
highest
values
observed
when
irrigated
MW
during
different
phenological
stage
evaluated.
more
exact
adjustment
compared
regressions.