Water Research,
Год журнала:
2024,
Номер
254, С. 121410 - 121410
Опубликована: Март 2, 2024
Packed
fixed-bed
reactors
are
traditionally
used
for
heterogeneous
catalytic
ozonation.
However,
a
high
solid-to-liquid
requirement,
poor
ozone
dissolution,
ineffective
utilization
of
catalyst
surface
area,
and
production
large
amounts
waste
impede
application
such
reactors.
In
this
study,
we
designed
suspension
ozonation
reactor
compared
the
performance
with
that
traditional
employing
oxalic
acid
(OA)
as
target
contaminant.
Our
results
showed
total
O
Antibiotics,
Год журнала:
2022,
Номер
11(12), С. 1700 - 1700
Опубликована: Ноя. 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.
Abstract
MXene
has
indeed
gained
significant
attention
in
recent
years
as
a
promising
photocatalyst
for
various
applications,
including
photocatalytic
degradation
of
pollutants.
possesses
several
unique
physical
and
chemical
properties
that
make
it
suitable
such
its
uniform
planar
structure,
strong
metal
conductivity,
effective
functional
groups,
numerous
derivatives.
These
contribute
to
the
excellent
photodegradation
performance
long‐term
stability
exhibited
by
MXene‐based
photocatalysts
compared
other
photocatalysts.
composites,
which
are
formed
incorporating
with
materials,
demonstrate
even
better
activity
due
their
abundant
active
sites
porous
structure.
One
crucial
factor
influencing
is
presence
groups
on
surface
MXene.
play
role
process
overall
efficiency
catalyst.
To
provide
broader
understanding
photocatalysts,
physicochemical
briefly
described
this
review.
This
includes
structural
characteristics,
electrical
groups.
review
also
investigates
synthesis
routes
preparing
MXene,
both
natural
state
composites
materials.
methods
essential
tailoring
meet
specific
requirements.
Finally,
discusses
future
work
challenges
photocatalysis.
field
holds
great
promise
addressing
environmental
concerns
improving
organic
compounds.
However,
further
research
needed
optimize
methods,
enhance
efficiency,
explore
practical
applications
Applied Geochemistry,
Год журнала:
2023,
Номер
152, С. 105644 - 105644
Опубликована: Март 25, 2023
Understanding
the
geochemistry
and
contamination
of
rivers
affected
by
rupture
tailings
dams
is
paramount
to
emergency
water
resources
management.
This
needs
long-term
monitoring
tailings,
sediments
along
river,
understanding
how
interact
physically
geochemically
with
natural
flowing
water.
An
effort
this
kind
uncommon
because
its
cost
opportunity.
The
purpose
study
was
help
filling
gap
using
B1
dam
(Brumadinho,
Minas
Gerais,
Brazil,
25
January
2019)
as
example.
To
accomplish
objective,
31
parameters
sediment
were
monitored
weekly
for
three
years
after
event,
spanning
impacted
non-impacted
sectors
Paraopeba
River,
including
a
reservoir
that
attenuating
propagation
downstream.
Using
hierarchical
clustering
analysis,
assembled
into
groups.
Associations
between
within
groups
pointed
processes
drivers
controlling
concentrations
Fe,
Mn,
Al,
As,
Pb
P
in
results
suggested
reductive
dissolution
Pb-
Mn-bearing
minerals
key
process.
In
rainy
period,
dissolved
Mn
sector
raised
exponentially
temperature
increase;
reservoir,
they
showed
episodic
peaks
triggered
thermal
stratification-related
pH
decreases.
general,
total
>
indicating
predominant
particle
transport.
Besides,
higher
Al
season,
sector.
dry
stream
flow-controlled
resuspension
desorption
Fe
from
sand
grains
raising
their
concentrations.
declining
trend
probably
related
erosion
acid
soils
watershed
caused
gradual
increases
P,
desorbed
clays
silts.
main
conclusion
left
strong
fingerprint
especially
which
lasts
keeps
use
River
suspended.
