This
study
systematically
investigated
the
combination
schemes
of
four
oxidants
(KMnO4,
NaClO,
ClO2,
and
O3)
powdered
activate
carbon
(PAC)
on
inactivation
Microcystis
aeruginosa
cells
removal
frequently
detected
odorants
in
raw
water
(diethyl
disulfide
(DEDS),
bis(2-chloroisopropyl)ether
(BCIE),
2-methylisoborneol
(2-MIB)
geosmin
(GSM)).
O3
showed
highest
pseudo-first-order
rates
for
all
compounds
NaClO
exhibited
cell
viability
Chlorophyll
a
(Chl-a).
The
Freundlich
model
fits
well
adsorption
DEDS
BCIE
by
PAC.
total
algae
combined
treatment
processes,
i.e.,
pre-oxidation/post-PAC
pre-PAC/post-oxidation
were
lower
than
that
each
scheme
alone.
Whereas,
an
enhanced
performance
can
be
achieved
prolonging
time
interval
oxidation
PAC
adsorption.
processes
possess
comparable
efficiency
minor
process,
but
significantly
inhibit
formation
disinfection
byproducts
(DBPs),
especially
C-DBPs
(for
ClO2),
bromate
chlorate/chlorite
ClO2).
provide
better
understanding
improving
in-situ
operation
oxidation/PAC
system
source
pretreatment.
Environmental Science and Pollution Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 4, 2025
Abstract
This
research
presents
a
straightforward
and
economically
efficient
design
for
microbial
fuel
cell
(MFC)
that
can
be
conveniently
integrated
into
borehole
to
monitor
natural
attenuation
in
groundwater.
The
employs
conventional,
transparent,
reusable
PVC
bailers
with
graphite
tape
granular
activated
carbon
create
high
surface
area
electrodes.
These
electrodes
are
connected
across
redox
environments
nested
boreholes
through
wire
variable
resistor
setup.
amended
were
installed
pre-existing
surrounding
groundwater
plume
near
former
gasworks
facility.
Among
all
the
MFC
locations
tested,
at
fringe
exhibited
highest
electrical
response
displayed
significant
variations
differential
abundance
of
key
bacterial
archaeal
taxa
between
anode
cathode
other
configurations
center
uncontaminated
showed
little
no
response,
suggesting
minimal
activity.
approach
enables
informed
decision-making
regarding
effectively
monitoring,
enhancing,
or
designing
degradation
strategies
plumes.
It
offers
valuable
tool
understanding
managing
contaminant
such
environments.
Membranes,
Journal Year:
2025,
Volume and Issue:
15(4), P. 125 - 125
Published: April 14, 2025
Integrated
systems
for
water
recovery
from
laundry
wastewater
were
investigated
to
close
the
cycle
loop.
The
grey
washing
of
cotton
fabrics
with
a
softening
detergent
was
prefiltered,
purified
in
low-pressure
membrane
process,
and
further
high-pressure
process
or
alternatively
an
adsorption
process.
In
all
proposed
systems,
recovered
clarified
completely
free
cationic
surfactants.
system
based
on
nanofiltration
as
final
stage
purification
allows
soft
water,
which
promotes
better
cleaning
results,
reduces
consumption
detergents,
extends
lifetime
devices
involved.
Adsorption
activated
carbon
effectively
reduced
concentration
organic
compounds,
including
fragrance
compounds.
