Sustainability,
Journal Year:
2023,
Volume and Issue:
16(1), P. 369 - 369
Published: Dec. 31, 2023
A
cross-flow
ultrafiltration
harvesting
system
for
a
pre-concentrated
microalgae
culture
was
tested
in
an
innovative
anaerobic-based
WRRF.
The
cultivated
membrane
photobioreactor
fed
with
effluent
from
anaerobic
bioreactor
treating
sewage.
These
harvested
biomasses
were
then
anaerobically
co-digested
primary
and
secondary
sludge
the
water
line.
Depending
on
needs
of
this
co-digestion,
filtration
process
evaluated
intermittently
over
period
212
days
different
operating
conditions,
mainly
total
amount
biomass
desired
final
solids
concentration
(up
to
15.9
g·L−1
average
9.7
g·L−1).
Concentration
ratios
15–27
obtained
transmembrane
fluxes
ranging
5
28
L·m−2·h−1.
Regarding
cleaning,
both
backflushing
chemical
cleaning
resulted
flux
recoveries
that
were,
average,
21%
higher
than
those
achieved
alone.
carbon
footprint
assessment
shows
promising
results,
as
GHG
emissions
associated
could
be
less
savings
energy
recovered
biogas
production
valorisation
microalgae.
The
European
Parliament
had
adopted
legislative
resolution
of
10
April
2024
on
the
proposal
for
a
directive
and
Council
concerning
urban
wastewater
treatment.
reduction
pollution
in
discharged
treated
parameters
BOD5,
total
ni-trogen
phosphorus
was
emphasized.
Based
these
results,
it
stated
that
impacts
quality
lakes,
rivers
seas
EU
are
visible
tangible.
At
same
time,
emphasized
sector
removal
treatment
is
responsible
0.8%
electricity
consumption
about
0.86%
all
greenhouse
gas
emissions
entire
EU.
Almost
third
could
be
prevented
by
improving
process,
better
use
sewage
sludge
increasing
energy
efficiency,
as
well
higher
rate
renewable
resource
technologies.
It
also
necessary
to
integrate
processes
into
circular
economy.
Sludge
management
water
reuse
sub-optimal
too
many
valuable
resources
still
being
wasted.
This
review
article
focused
sustainable
municipal
treatment,
innovative
new
technologies
(combined
hybrid
processes,
Anammox,
etc.
their
practice
with
aim
environmental
efficiency
reducing
carbon
footprint.
research
possibilities
processing
sludge,
nitrogen
phosphorus,
wastewater.
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(5), P. 1907 - 1907
Published: Feb. 23, 2025
Water
pollution
from
industrial
dyes
like
methylene
blue
poses
severe
environmental
and
health
risks,
necessitating
effective
wastewater
treatment
methods.
Among
various
adsorbents,
MgO
stands
out
due
to
its
high
surface
area,
tunable
porosity,
superior
adsorption
capabilities.
This
research
presents
the
preparation
of
nano-scale
magnesium
oxide
(MgO)
fibers
using
electrospinning,
followed
by
calcination
at
temperatures
300
°C,
400
500
600
700
°C.
The
effects
on
MgO's
characteristics,
microstructure,
crystalline
phases,
performance
were
investigated.
SEM
TEM
analyses
revealed
that
calcined
°C
possessed
most
distinct
porous
structure,
with
a
coarse
substantial
pores,
which
enhanced
properties.
XRD
analysis
confirmed
had
highest
crystallinity,
particularly
(200)
crystal
plane.
Notably,
BET
area
properties
these
fibers,
making
them
highly
for
applications.
Adsorption
tests
(MB)
indicated
achieved
maximum
dye
removal
efficiency
52.52%
an
capacity
43.11
mg/g
within
90
min.
process
aligned
quasi-second-order
kinetic
model
(R2
=
0.9846)
fit
Langmuir
isotherm
0.991),
indicating
monolayer
chemisorption.
study
underscores
effectiveness
demonstrating
characteristics
are
beneficial
Processes,
Journal Year:
2025,
Volume and Issue:
13(3), P. 882 - 882
Published: March 17, 2025
The
persistent
challenge
of
achieving
cost-effective
total
phosphorus
(TP)
removal
in
wastewater
treatment
necessitates
innovative
coagulant
development.
While
polyaluminum
chloride
(PAC)
demonstrates
efficacy
eliminating
nitrogen
(TN),
ammonia
(NH4+-N),
suspended
solids
(SSs),
and
pH
stabilization,
its
limitations
attaining
economical
TP
remain
unresolved.
This
study
introduces
a
novel
FeSO4-Al2(SO4)3
composite
to
address
PAC’s
shortcomings
through
systematic
formulation
optimization.
Utilizing
single-variable
experiments
response
surface
methodology
(RSM),
we
determined
the
optimal
reagent
combinations
under
simulated
high-efficiency
sedimentation
tank
conditions.
results
revealed
that
achieved
efficiency
approximately
40%
greater
than
PAC
at
equivalent
dosages.
A
cost–benefit
analysis
indicated
an
approximate
50%
reduction
chemical
expenditure
relative
conventional
PAC-based
systems.
optimized
demonstrated
synergistic
effects
between
Fe2+
Al3+
ions,
enhancing
charge
neutralization
sweep
flocculation
mechanisms.
These
findings
establish
as
technically
economically
viable
alternative
for
TP-centric
treatment,
with
implications
process
sustainability.
Further
investigations
should
validate
long-term
operational
stability
across
diverse
water
matrices
assess
environmental
impacts
residual
metal
ions.
