Environmental Science Nano,
Journal Year:
2021,
Volume and Issue:
8(4), P. 960 - 977
Published: Jan. 1, 2021
Magnetic
graphene
catalysts
were
prepared
for
the
removal
of
antibiotics
(sulfamethoxazole,
norfloxacin,
tetracycline
and
flumequine)
from
water.
Different
proportions
magnetite-graphene
1:0
to
0:1
considered
study
catalytic
activation
inorganic
peroxides,
i.e.
peroxymonosulfate
(PMS),
peroxydisulfate
hydrogen
peroxide.
The
presence
was
mainly
responsible
activation,
which
most
effective
in
PMS.
A
ratio
20%
magnetite
solid
enough
achieve
complete
degradation
with
high
recovery
by
application
a
magnetic
field.
performance
catalyst
further
evaluated
simulated
urban
wastewater,
studying
main
parameters
affecting
process
stability
sequential
reuses.
non-radical
mechanism
during
PMS
hypothesized
kinetic
scavenging
probes
tests.
electron
transfer
suggested
as
reaction
paramagnetic
resonance
analysis
D2O.
showed
activity
remove
The Science of The Total Environment,
Journal Year:
2021,
Volume and Issue:
776, P. 145843 - 145843
Published: Feb. 16, 2021
In
this
study,
the
occurrence
of
12
organophosphorus
flame
retardants
(OPFRs),
64
pesticides,
21
perfluoroalkyl
substances
(PFASs)
and
34
pharmaceuticals
personal
care
products
(PPCPs)
in
surface
water,
sediments
vegetation
collected
from
seven
locations
along
South
Riyadh
six
Al-Jubail
industrial
city
(Saudi
Arabia)
were
reported.
The
median
concentrations
ƩOPFRs,
ƩPesticides,
ƩPFASs
ƩPPCPs
water
was
297,
231,
29.7
3794
ng
L−1,
respectively,
56.2,
40.4,
5.66
419
g−1
d.w.,
crops
for
human
consumption
45.6,
42.0,
0.46
42.0
g−1,
farm
13.4,
57.5,
3.2
637
natural
51.7,
10.3,
1.88
1580
g−1.
Predominant
compounds
all
matrices
tris-(1,3-dichloro-2-propyl)phosphate
(TClPP),
acetamiprid,
imidacloprid,
caffeine,
bisphenol
A
(BPA),
diclofenac
ibuprofen.
Tris(2-butoxyethyl)
phosphate
(TBEP),
tris-(2-ethylhexyl)phosphate
(TPhP),
perfluoroctanoic
acid
(PFOA),
sulfonate
(PFOS)
paracetamol
also
many
samples
but
at
low
concentrations.
contaminants'
levels
showed
similar
values
both
cities.
However,
pesticide
significantly
higher
(p
<
0.05)
lower
than
those
Al-Jubail.
risk
assessment
aquatic
biota
that
abamectin,
diazinon
(pesticides),
caffeine
had
highest
levels.
cumulative
contaminant
mixture
is
concern.
As
far
as
to
health
concerned,
individual
contaminants
did
not
show
a
significant
hazard
population.
OPFRs
requires
closed
monitoring
since
%
admissible
daily
intakes
(ADIs)
or
reference
doses
(RfD)
are
high.
This
one
most
comprehensive
study
covering
environmental
emerging
carried
out
Saudi
Arabia.
Chemosphere,
Journal Year:
2022,
Volume and Issue:
294, P. 133825 - 133825
Published: Jan. 31, 2022
Contaminants
of
emerging
concern
(CECs)
are
a
in
aquatic
environments
due
to
possible
adverse
effects
on
the
environment
and
humans.
This
study
assessed
occurrence
mass
flows
CECs
Sweden's
three
largest
lakes
24
associated
rivers.
The
distribution
105
was
investigated,
comprising
71
pharmaceuticals,
13
perfluoroalkyl
substances
(PFASs),
eight
industrial
chemicals,
four
personal
care
products
(PCPs),
parabens,
two
pesticides,
other
(mostly
anthropogenic
markers).
is
first
systematic
main
one
report
environmental
concentrations
chemicals
tributyl
citrate
acetate
2,2'-dimorpholinyldiethyl-ether.
∑CEC
concentration
generally
higher
river
water
(31-5200
ng/L;
median
440
ng/L)
than
lake
(36-900
190
ng/L).
At
urban
sites,
seasonal
variations
were
observed
for
PCPs
also
antihistamines,
antidiabetics,
antineoplastic
agents,
antibiotics,
fungicides.
CEC
load
180
g/day
(range
4.0-4300
g/day),
with
total
5000
Lake
Vänern,
510
Vättern,
5600
Mälaren.
All
used
as
drinking
reservoirs,
so
further
investigations
impact
ecosystem
human
health
needed.
Antibiotics,
Journal Year:
2022,
Volume and Issue:
11(12), P. 1700 - 1700
Published: Nov. 25, 2022
Pharmaceuticals
are
present
as
pollutants
in
several
ecosystems
worldwide.
Despite
the
reduced
concentrations
at
which
they
detected,
their
negative
impact
on
natural
biota
constitutes
a
global
concern.
The
consequences
of
pharmaceuticals’
presence
water
sources
and
food
have
been
evaluated
with
higher
detail
for
human
health.
However,
although
most
pharmaceuticals
detected
environment
had
not
designed
to
act
against
microorganisms,
it
is
utmost
importance
understand
environmental
native
microbiota.
Microbial
communities
can
suffer
serious
from
environment,
may
directly
public
health
ecosystem
equilibrium.
Among
this
class
pollutants,
ones
that
studied
more
antibiotics.
This
work
aims
provide
an
overview
impacts
different
biofilms,
specifically
biofilms
aquatic
engineered
systems.
alterations
caused
biofilm
function
characteristics,
well
bacteria
antimicrobial
tolerance
consequently
associated
risks
health,
also
reviewed.
information
already
available
topic,
need
additional
data
urges
assessment
emerging
microbial
potential
impacts.
