Microalgal-based
treatment
of
anaerobic
digestate
food
effluent
(ADFE)
has
been
found
to
be
efficient
and
effective.
However,
turbidity
high
ammoniacal
nitrogen
(NH3-N)
content
ADFE
is
a
major
setback,
requiring
significant
dilution.
Although
the
possibility
growing
microalgae
in
high-strength
with
minimal
dilution
demonstrated
suspension
cultures,
such
effluents
remain
highly
turbid
affect
light
path
cultures.
Here,
feasibility
Chlorella
sp.
(MUR
269)
biofilm
treat
ammonium
concentrations
was
investigated.
Six
different
were
evaluated
for
their
effects
on
growth
nutrient
removal
by
MUR
269
using
perfused
technique.
Biomass
yields
productivities
this
alga
at
various
(mg
N
NH3
L-1)
55a
(108
g
m-2
9.80
d-1)>100b>200c=300c=500c>1000d.
Growth
inhibited,
resulting
28%
reduction
yield
when
grown
1000
mg
L-1.
A
survey
photosynthetic
parameters
reveals
evidence
stress
occurring
following
sequence:
55<100<200<300<1000.
observed
across
ammonium.
The
pattern
also
followed
concentration
gradients
except
COD,
where
highest
occurred
500
Higher
rates
seen
higher
declined
gradually
over
time.
In
general,
our
results
indicated
that
strategy
efficient,
minimizes
water
consumption,
offers
easy
biomass
harvesting,
better
exposure
light.
Therefore,
it
can
suitable
treating
concentrated
reduce
concentration.
Current Research in Biotechnology,
Journal Year:
2024,
Volume and Issue:
7, P. 100201 - 100201
Published: Jan. 1, 2024
In
present
times,
there
is
increasing
potential
of
algal-based
membrane
bioreactors
(MBRs)
considering
the
removal
hazardous
and
toxic
contaminants
from
different
wastewater
sources.
The
article
summarizes
on
various
types
that
can
be
effectively
removed
using
MBRs,
including
heavy
metals
emerging
contaminants.
selection
criteria,
advantages
limitations
algal
species
used
in
MBRs
are
also
discussed.
For
optimal
performance
operating
parameters
viz.
hydraulic
retention
time,
organic
loading
rate,
nutrient
levels,
light
intensity
duration
essential.
review
further
highlights
efficient
contaminants,
biomass
productivity,
fouling
as
critical
indicators.
Various
applications
particularly
treatment
municipal
industrial
discharges,
landfill
leachate
treatment,
bioremediation
contaminated
sites,
Finally,
current
identifies
technological
limitations,
scale-up
challenges,
economic
feasibility
provides
directions
future
researches.
On
whole,
offer
a
sustainable
worthwhile
solution
eradication
harmful
lethal
effluent
Biotechnology for Biofuels and Bioproducts,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: May 10, 2024
Abstract
Botryococcus
braunii
,
a
colonial
green
microalga
which
is
well-known
for
its
capacity
to
synthesize
hydrocarbons,
has
significant
promise
as
long-term
source
of
feedstock
the
generation
biofuels.
However,
cultivating
and
scaling
up
B.
using
conventional
aqua-suspended
cultivation
systems
remains
challenge.
In
this
study,
we
optimized
medium
components
light
intensity
enhance
lipid
hydrocarbon
production
in
multi-cultivator
airlift
photobioreactor.
BBM
3N
with
200
μmol/m
2
/s
16
h
light–8
dark
regimen
yielded
highest
biomass
productivity
(110.00
±
2.88
mg/L/day),
well
content.
Cultivation
flat-panel
bioreactor
resulted
significantly
higher
(129.11
2.74
(32.21
1.31
(28.98
2.08
mg/L/day)
compared
Erlenmeyer
flasks
open
20-L
raceway
pond.
It
also
exhibited
20.15
1.03%
protein
content
including
elevated
levels
chlorophyll
b
carotenoids.
This
work
noteworthy
since
it
first
describe
fatty
acid
profiles
during
cobalt
treatment.
The
study
demonstrated
that
high
concentrations
(up
5
mg/L
nitrate)
culture
affected
synthesis,
resulting
amounts
n
-alkadienes
trienes
lipids
monounsaturated
acids
concentration.
Furthermore,
pyrolysis
experiments
on
microalgal
de-oiled
revealed
compounds
generated
by
thermal
degradation
facilitate
extra
economical
value
system.
Microalgal-based
treatment
of
anaerobic
digestate
food
effluent
(ADFE)
has
been
found
to
be
efficient
and
effective.
However,
turbidity
high
ammoniacal
nitrogen
(NH3-N)
content
ADFE
is
a
major
setback,
requiring
significant
dilution.
Although
the
possibility
growing
microalgae
in
high-strength
with
minimal
dilution
demonstrated
suspension
cultures,
such
effluents
remain
highly
turbid
affect
light
path
cultures.
Here,
feasibility
Chlorella
sp.
(MUR
269)
biofilm
treat
ammonium
concentrations
was
investigated.
Six
different
were
evaluated
for
their
effects
on
growth
nutrient
removal
by
MUR
269
using
perfused
technique.
Biomass
yields
productivities
this
alga
at
various
(mg
N
NH3
L-1)
55a
(108
g
m-2
9.80
d-1)>100b>200c=300c=500c>1000d.
Growth
inhibited,
resulting
28%
reduction
yield
when
grown
1000
mg
L-1.
A
survey
photosynthetic
parameters
reveals
evidence
stress
occurring
following
sequence:
55<100<200<300<1000.
observed
across
ammonium.
The
pattern
also
followed
concentration
gradients
except
COD,
where
highest
occurred
500
Higher
rates
seen
higher
declined
gradually
over
time.
In
general,
our
results
indicated
that
strategy
efficient,
minimizes
water
consumption,
offers
easy
biomass
harvesting,
better
exposure
light.
Therefore,
it
can
suitable
treating
concentrated
reduce
concentration.
