Journal of Water Process Engineering,
Год журнала:
2024,
Номер
65, С. 105811 - 105811
Опубликована: Июль 26, 2024
Selecting
microalgal
species
with
efficient
nutrient
uptake
capabilities
and
employing
an
effective
cultivation
system
are
critical
to
successful
AD
effluent
reclamation.
While
Scenedesmus
sp.
MUR
272
Chlorella
269
have
shown
efficiency
in
suspension-based
ADFE
treatment,
biofilm-based
presents
a
promising,
cost-efficient
alternative
for
valorization.
Our
study
investigates
the
feasibility
of
cultivating
these
strains
biofilm
treat
ADFE,
using
modified
F/2
medium
as
control.
Growth
monitoring
Chlorophyll
(ChlF
a)
fluorescence
measurement
assessed
algal
performance
biofilm.
Biomass
yield
ranked
follows:
ADFE>Scenedesmus
MF/2>Chlorella
MF/2.
Both
demonstrated
significantly
higher
biomass
productivity
than
ChlF
data
revealed
that
maintained
relatively
more
stable
photosynthetic
culture
progressed.
exhibited
similar
induction
curve
both
F/2.
intensity
increased
progressed,
decreased
till
day
10,
especially
at
J
I
step,
suggesting
presence
stress
factor
culture.
Efficient
removal
was
achieved
87–100
%
ammoniacal
nitrogen
(NNH3)
73–85
phosphate.
More
protein
carbohydrates
were
produced
on
4
10
species,
showing
metabolites
Scenedesmus.
These
species'
hold
promise
valorization
effluents.
The Science of The Total Environment,
Год журнала:
2024,
Номер
926, С. 171734 - 171734
Опубликована: Март 18, 2024
Botryococcus
braunii
has
garnered
significant
attention
in
recent
years
due
to
its
ability
produce
high
amounts
of
renewable
hydrocarbons
through
photosynthesis.
As
the
world
shifts
towards
a
greener
future
and
seeks
alternative
sources
energy,
cultivation
B.
extraction
can
potentially
provide
viable
solution.
However,
development
sustainable
cost-effective
process
for
cultivating
is
not
without
challenges.
Compared
other
microalgae,
grows
very
slowly,
making
it
time-consuming
expensive
biomass.
In
response
these
challenges,
several
efforts
have
been
put
into
optimizing
systems
increase
biomass
growth
hydrocarbon
production
efficiency.
This
review
presents
comparative
analysis
different
systems,
factors
affecting
productivity
are
critically
discussed.
Attached
offers
advantages,
including
higher
less
water
requirement
compared
liquid
culture.
These
advantages
hold
potential
enhancing
economic
viability
microalgal
fuels.
Here,
we
propose
that
employing
attached
cultivation,
coupled
with
milking
technique
extraction,
represents
an
efficient
approach
generating
fuels
from
braunii.
Nevertheless,
further
research
needed
ascertain
large-scale
implementation.
Algal Research,
Год журнала:
2023,
Номер
73, С. 103156 - 103156
Опубликована: Май 31, 2023
Coal,
petroleum
and
natural
gas
have
remained
the
premium
energy
sources
driving
economy
sustaining
population
growth
for
years.
Global
human
has
shown
a
7-fold
increase
in
last
two
centuries
and,
consequently,
an
astronomical
global
demand.
Interestingly,
rising
warming,
climate
change
destruction
of
environment
are
trends
parallel
with
world
profile
continual
dependence
on
fossil
fuels.
Actions
to
mitigate
these
challenges
ignited
interest
autotrophic
production
hydrocarbons
from
microalgae
as
alternative
fossil-based
The
microalgal
strain,
Botryococcus
braunii,
offers
excellent
platform
renewable
production.
B.
braunii
unusual
fascinating
attributes,
by
producing
liquid
extracellularly,
classical
non-invasive,
non-destructive
extraction
technique
known
milking
can
be
applied.
In
process,
extracellular
matrix
algae
repetitively
extracted
without
need
cell
harvesting,
dewatering,
disruption,
purification
metabolites,
thereby
reducing
downstream
processing
costs.
this
way,
do
not
grow
cellular
biomass
but
act
only
light-driven
catalysts
convert
CO2
into
that
accumulate
externally
medium.
work,
different
lipid
techniques
discussed
depth,
taking
critical
analysis
effect
each
process
hydrocarbon
recovery
purity
well
their
economic
viability.
Moreover,
composition
factors
influencing
is
comprehensively
reviewed.
critically
discussed,
cultivation
protocols
suitable
strategies
improve
highlighted.
We
indicate
switchable
solvent-based
exceptional
potential
biofilm-based
holds
great
promise
reduce
However,
more
research
needed
large-scale
implementation
feasibility.
The Science of The Total Environment,
Год журнала:
2023,
Номер
902, С. 166479 - 166479
Опубликована: Авг. 21, 2023
Membrane
fouling
is
a
major
challenge
which
limits
the
sustainable
application
of
membrane
filtration-based
microalgal
harvesting
at
industrial
level.
leads
to
increased
operational
and
maintenance
costs
represents
obstacle
downstream
processing.
Nano-clays
are
promising
naturally
occurring
nanoparticles
in
fabrication
due
their
low-cost,
facile
preparation,
superior
properties
terms
surface
hydrophilicity,
mechanical
stability,
resistance
against
chemicals.
The
modification
using
nano-clays
approach
improve
membranes
resistance.
However,
positive
effects
nano-clay
particles
on
often
limited
by
aggregation
poor
adhesion
base
polymeric
matrix.
This
review
surveys
recent
efforts
achieve
anti-fouling
behavior
with
fillers.
Further,
strategies
better
incorporation
polymer
matrix
summarised,
factors
that
govern
fouling,
adhesion,
agglomeration
leaching
discussed
depth.
The Science of The Total Environment,
Год журнала:
2024,
Номер
924, С. 171320 - 171320
Опубликована: Март 6, 2024
Anaerobic
digestion
of
organic
waste
produces
effluent
(ADE)
that
requires
further
treatment.
Biofilm-based
microalgal
cultivation
is
a
favoured
approach
to
ADE
This
study
compared
Chlorella
sp.
MUR
268
and
Scenedesmus
269
in
biofilm
suspension
cultures
treat
anaerobic
digestate
food
(ADFE).
had
significantly
higher
biomass
(50.38
g
m−2)
than
(9.39
m−2).
Conversely,
yielded
1.5
times
more
(1.2
L−1)
suspension.
49.3
%
areal
productivity
suspension,
while
showed
87.3
growth
removed
nutrients
ADFE.
In
COD,
ammoniacal
nitrogen,
phosphate
were
reduced
94.9,
5.2,
5.98
mg
L−1
for
268,
245,
2.89,
3.22
269,
respectively.
biofilm,
achieved
reductions
149.9,
1.16,
3.57
L−1,
100.2,
6.9
2.07
L−1.
Most
these
values
are
below
the
recommended
discharge
standard,
highlighting
efficacy
this
system
ADFE
Biofilm
fixed
68–81
nitrogen
was
biomass,
only
55–71
ended
biomass.
88
phosphorus,
phosphorus
(55
%)
counterpart
(34
%).
design
offers
advantages
like
simplified,
cost-effective
operation,
easy
recovery,
water
usage.
The Science of The Total Environment,
Год журнала:
2024,
Номер
948, С. 174462 - 174462
Опубликована: Июль 9, 2024
This
comprehensive
study
unveils
the
vast
global
potential
of
microalgae
as
a
sustainable
bioenergy
source,
focusing
on
utilization
marginal
lands
and
employing
advanced
machine
learning
techniques
to
predict
biomass
productivity.
By
identifying
approximately
7.37
million
square
kilometers
suitable
for
cultivation,
this
research
uncovers
extensive
these
underutilized
areas,
particularly
within
equatorial
low-latitude
regions,
development.
approach
mitigates
competition
food
resources
conserves
freshwater
supplies.
Utilizing
cutting-edge
algorithms
based
robust
datasets
from
cultivation
experiments
spanning
1994
2017,
integrates
essential
environmental
variables
map
out
detailed
projection
yields
across
variety
landscapes.
The
analysis
further
delineates
carbon
sequestration
two
effective
methods:
Photobioreactors
(PBRs),
Open
Ponds,
with
PBRs
showcasing
exceptional
productivity,
average
daily
productivity
142.81mgL
Journal of Environmental Management,
Год журнала:
2024,
Номер
371, С. 123015 - 123015
Опубликована: Окт. 31, 2024
Optimizing
light
conditions
in
any
culture
design
for
effluent
treatment
is
crucial
maximizing
microalgae
growth
and
nutrient
uptake.
We
investigated
the
impact
of
low
(53
±
1
μmol
m
