Membranes,
Год журнала:
2024,
Номер
14(12), С. 245 - 245
Опубликована: Ноя. 22, 2024
This
study
presents
a
theoretical
and
mathematical
analysis
modelling
of
the
emerging
microalgal
membrane
photobioreactors
(M-MPBRs)
for
wastewater
treatment.
A
set
models
was
developed
to
predict
biological
performances
M-MPBRs.
The
model
takes
into
account
effects
hydraulic
retention
time
(HRT),
solid
(SRT),
N/P
ratio
influent
on
performance
M-MPBRs,
such
as
biomass
production
nutrient
(N
P)
removals.
calibrated
validated
using
experimental
data
from
literature.
explained
that
prolonged
SRT
could
promote
removal,
while
prolonging
HRT
exhibited
negative
effect.
Furthermore,
be
improved
by
augmenting
loading,
removal
would
limited
under
insufficient
conditions.
results
demonstrated
best
achieved
at
=
1
d
40
typical
municipal
with
an
N
concentration
mg/L.
are
in
good
agreement
findings
suggest
proposed
can
used
powerful
tool
optimize
these
parameters
improve
nutrients
P),
well
productivity
provides
new
insights
use
optimal
design
operation
M-MPBRs
sustainable
Water,
Год журнала:
2024,
Номер
16(14), С. 1995 - 1995
Опубликована: Июль 14, 2024
Microbial
flocculants
(MBFs),
a
class
of
eco-friendly
and
biodegradable
biopolymers
produced
by
various
microorganisms,
have
gained
increasing
attention
as
promising
alternatives
to
conventional
chemical
in
wastewater
treatment
pollutant
removal.
This
review
presents
comprehensive
overview
the
current
state
MBF
research,
encompassing
their
diverse
sources
(bacteria,
fungi,
algae),
major
categories
(polysaccharides,
proteins,
glycoproteins),
production
processes,
flocculation
performance
mechanisms.
The
wide-ranging
applications
MBFs
removing
suspended
solids,
heavy
metals,
dyes,
other
pollutants
from
industrial
municipal
are
critically
examined,
highlighting
superior
efficiency,
selectivity,
environmental
compatibility
compared
traditional
flocculants.
Nonetheless,
bioflocculants
face
significant
challenges
including
high
substrate
costs,
low
yields,
intricate
purification
methodologies,
factors
that
impede
scalability.
Moreover,
risk
microbial
contamination
attendant
health
implications
associated
with
use
(MBFs)
necessitate
thorough
evaluation.
To
address
costs
variable
product
quality,
strategies
such
waste
valorization,
strain
improvement,
process
optimization,
biosafety
evaluation
discussed.
development
multifunctional
MBF-based
synergistic
technologies
identified
emerging
trends
for
enhanced
resource
recovery.
Future
research
directions
outlined,
emphasizing
need
in-depth
mechanistic
studies,
advanced
characterization
techniques,
pilot-scale
demonstrations
accelerate
adoption
MBF,
moreover,
integration
novel
partial
nitrification
anammox
process.
is
intended
inspire
guide
further
efforts
aimed
at
unlocking
full
potential
sustainable,
high-performance,
cost-effective
addressing
escalating
management
conservation.
Microorganisms,
Год журнала:
2025,
Номер
13(2), С. 367 - 367
Опубликована: Фев. 8, 2025
Arthrospira
platensis,
a
filamentous
cyanobacterium,
exhibits
morphological
variability
influenced
by
biotic
and
abiotic
factors.
We
investigated
the
effect
of
sodium
ion
concentration
on
filament
length,
growth,
harvest
efficiency.
Increasing
from
0.2
M
to
0.4
(using
NaHCO3
or
Na2CO3)
led
significant
increase
in
0.3393
0.7084
mm,
longer
filaments
had
increased
auto-flotation
efficiency
(from
87%
94%)
within
3
h.
The
linear
filaments,
obtained
via
spontaneous
conversion,
also
photosynthetic
activity
growth
rates
compared
coiled
we
speculate
this
was
due
decreased
self-shading
light
penetration.
However,
poor
(10%
after
24
h)
buoyancy,
likely
limits
their
survival
natural
ecosystems.
These
findings
provide
insights
into
optimizing
cultivation
A.
platensis
for
biomass
harvesting.
