SSRN Electronic Journal,
Год журнала:
2021,
Номер
unknown
Опубликована: Янв. 1, 2021
Taihu
Lake
is
the
most
important
drinking
water
source
of
major
cities
in
Yangtze
River
Delta.
The
pollution
endocrine
disruptors
(EDCs)in
has
been
increasing
recently,
accurate
determination
an
guide
for
predicting
its
health
risks
and
developing
appropriate
controls.
Monitoring
organic
pollutants
using
diffusive
gradient
thin
film
technique
(DGT)
attracted
much
attention
due
to
more
accuracy
convenience
than
grab
sampling
methods.
In
this
study,
a
novel
cyclodextrin
polymer
(CDP)
synthesized
by
simple
green
method
was
taken
as
adsorbent
binding
gel.
Four
endocrine-disrupting
chemicals
(EDCs),
bisphenol
A
(BPA),
17α-ethinylestradiol
(EE2),
17β-estradiol
(E2),
estriol
(E3),
were
models
determine
diffusion
coefficients
(4.68×10-6,
3.38×10-6,
3.34×10-6
4.31×10-6
cm2/s)
test
performance
DGT,
such
adsorption
capacity
deployment
time
(1-5
day).
assembled
CDP-DGT
adopted
four
EDCs
simulated
environment
(3-9
pH,
0.001-0.5M
ionic
strength
(IS),
dissolved
matter
(DOM)
0-20mg/L).
ability
verified
Jiuxiang
carried
out
large-scale
field
application
situ
basin.
results
show
that
total
concentration
range
estradiol
equivalent
concentrations
(EEQ)
main
rivers
are
2.78
ng/L
11.08
2.62
10.91
ng/L,
respectively.
risk
quotients
(RQs)
all
sites
region
greater
1,
indicating
pose
serious
threat
aquatic
organisms
area.
Therefore,
monitoring
basin
should
be
further
strengthened.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(12), С. 5023 - 5035
Опубликована: Март 14, 2024
In
this
study,
three
electrochemical
cocatalytic
oxidation
(EO)
systems
using
different
oxidants
peroxysulfate
(both
PMS
and
PDS)
hydrogen
peroxide
(H2O2)
were
compared.
These
analyzed
for
their
degradation
mechanisms
pathways
of
organic
pollutants,
specifically
sulfamethoxazole
(SMX),
carbamazepine
(CBZ),
bisphenol
A
(BPA).
Based
on
quenching
experiments
electron
paramagnetic
resonance
(EPR)
analyses,
the
EO-Fe(III)-PMS
system
generated
multiple
reactive
oxygen
substances
(ROS)
including
SO4•–,
•OH,
1O2.
The
EO-Fe(III)-PDS
process
primarily
utilized
•OH
with
being
dominant
agent.
EO-Fe(III)-H2O2
chiefly
depended
which
exhibited
highest
yield
among
systems.
Response
surface
methodology
(RSM)
analysis
suggested
that
was
less
influenced
by
complex
water
matrices.
SMX,
CBZ,
BPA
predicted
leveraging
mass
spectrometry
(MS)
data.
Biotoxicity
assessments
revealed
is
most
apt
SMX
elimination.
Meanwhile,
displayed
environmentally
friendly
characteristics
during
CBZ
compared
to
other
two
Overall
results
indicate
pros
cons
catalytic
utilizing
oxidants,
offering
insights
into
future
options
treatment
strategies
based
individual
merits
sustainability.
Journal of Dispersion Science and Technology,
Год журнала:
2021,
Номер
44(7), С. 1183 - 1194
Опубликована: Дек. 6, 2021
The
aim
of
this
study
was
to
synthesize
activated
carbon
from
low-cost
material
and
then
magnetize
it
with
CoFe2O4
nanoparticles
for
evaluating
its
efficiency
in
the
removal
cephalexin
aqueous
media.
physical
structural
properties
synthesized
adsorbent
were
analyzed
by
SEM,
BET,
XRD,
VSM
techniques.
In
addition,
effect
parameters,
including
pH,
concentration
cephalexin,
dose,
contact
time,
studied
determine
equilibrium
adsorption
process
isotherms
kinetics.
results
showed
that
increases
increasing
time
dose
decreases
pH
initial
cephalexin.
As
antibiotics
increased
50
250
mg/L,
decreased
96.8%
36.1%.
Optimal
conditions
obtained
at
=
3,
30
min,
2
g/L.
Cephalexin
antibiotic
follows
Freundlich
isotherm
(R2
0.9817)
pseudo
second-order
kinetics
0.939).
Although
amount
adsorbed
per
unit
mass
(qe)
27.5
18.3
mg/g
0.25
2.5
g/L
carbon.
present
magnetized
carbon,
addition
having
such
as
rapid
easy
separation,
has
a
high
potential
adsorption.
