Environmental Technology & Innovation,
Год журнала:
2024,
Номер
34, С. 103601 - 103601
Опубликована: Март 19, 2024
The
rising
urban
wastewater
discharge
into
waterways
resulted
in
harmful
environmental
effects.
Microalgae
can
bioremediate
wastewaters
by
removing
contaminants
such
as
nitrogen
and
phosphorus
be
rather
tolerant
to
toxic
compounds.
Managing
the
anaerobic
digestate
resulting
from
sludge
treatment
plants
faces
some
obstacles
related
its
high
contaminant
content.
This
work
aims
study
ability
of
microalga
Chlorella
vulgaris
perform
tertiary
wastewater,
assessing
growth,
nutrient
removal
effect
addition
at
different
concentrations
this
phase.
A
secondary
effluent
was
supplied
with
1%
(M1),
5%
(M5)
10%
(M10)
(v/v)
used
culture
microalgae.
An
assay
using
only
also
performed
(S).
C.
grew
successfully
all
effluents
except
for
M10,
highest
specific
growth
rate
obtained
M1
assay,
0.35
±
0.01
d−1.
Ammonium-nitrogen
completely
removed
S,
M5
assays
(>99.9%).
phosphate-phosphorus
tested
effluents,
achieving
a
negligible
concentration
efficiency
96.2
0.2%,
51
2%,
43
3%
respectively.
These
results
showed
that
microalgal
cultures
could
efficiently
remediate
mixture
digestate,
below
current
legislation
limits
more
restrictive
predicted
future
legislation.
Algal Research,
Год журнала:
2023,
Номер
74, С. 103214 - 103214
Опубликована: Июль 1, 2023
The
growing
world
population
and
industrialization
necessitate
shifting
away
from
depleting
eco-toxic
fossil
fuels.
Microalgae,
specifically
B.
braunii,
offer
a
viable
alternative
due
to
their
unique
ability
produce
high
levels
of
long-chain
hydrocarbons
lipids
for
biodiesel
production.
This
review
focuses
on
the
potential
using
wastewater
as
cost-effective
culture
medium
braunii
cultivation,
leading
biofuel
production
reclamation.
Different
(agricultural,
municipal,
industrial)
suitability
supporting
growth
were
discussed.
Some
physicochemical
parameters
that
influence
in
highlighted.
challenges
cultivating
identified,
solutions
proposed.
Utilizing
abundantly
available,
costless
cultivation
is
roadmap
toward
achieving
cost-efficient
environmentally
friendly
other
valuable
products.
approach
could
address
global
energy
crisis,
combat
climate
change,
provide
fresh
water
meet
rising
demands.
Chemosphere,
Год журнала:
2024,
Номер
354, С. 141688 - 141688
Опубликована: Март 12, 2024
Microalgal-based
treatment
of
anaerobic
digestate
food
effluent
(ADFE)
has
been
found
to
be
efficient
and
effective.
However,
turbidity
high
total
ammonia
nitrogen
(TAN))
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
TAN
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
concentrations.
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.
