Water Science & Technology,
Год журнала:
2024,
Номер
90(11), С. 2961 - 2977
Опубликована: Ноя. 9, 2024
Rotating
algae
biofilm
reactors
(RABRs)
can
reduce
energy
requirements
for
wastewater
reclamation
but
require
further
optimization
implementation
at
water
resource
recovery
facilities
(WRRF).
Optimizing
RABR
operation
is
challenging
because
conditions
WRRF
change
frequently,
and
disregarding
interaction
terms
related
to
these
changes
produce
incorrect
conclusions
about
behavior.
This
study
evaluated
the
two-way
main
effects
of
four
factors
on
biomass
productivity
phosphorus
removal
efficiency
a
microalgae-bacteria
grown
in
municipal
anaerobic
digester
centrate,
with
factor
levels
operating
selected
mimic
pilot
Utah.
Two-way
interactions
harvesting
period*light
intensity
(LI),
period*temperature,
LI*hydraulic
retention
time
(HRT)
had
significant
productivity:
high
temperature
low
LI,
highest
was
achieved
14-day
period,
medium
7-day
period.
At
HRT,
occurred
LI.
Phosphorus
strongly
influenced
by
LI
most
rapidly
during
first
2
days
which
suggests
precipitation
contributed
significantly
removal.
These
observations
provide
insight
optimization.
Horticulturae,
Год журнала:
2023,
Номер
9(3), С. 308 - 308
Опубликована: Фев. 24, 2023
The
potential
use
of
carbon
dioxide
(CO2)
and
wastewater
released
from
a
mushroom
farm
for
the
cultivation
Chlorella
vulgaris
microalga
was
investigated
in
this
study.
For
purpose,
microcontroller-based
aided
CO2
capture
mixing
prototype
constructed
C.
under
varying
concentrations
(0
as
control,
50
100%).
results
showed
that
helpful
to
maintain
desirable
levels
(6000
ppm)
chamber
with
constant
supply
algal
culture,
i.e.,
0.6%
at
an
airflow
rate
mL/min.
After
16
days
cultivation,
it
observed
maximum
significant
(p
<
0.05)
biomass
production
2.550
±
0.073
mg/L
recorded
50%
concentration
followed
by
100%
control.
Also,
removal
selected
pollutants,
such
total
dissolved
solids
(84.00
1.37%),
biochemical
oxygen
demand
(90.17
2.42%),
chemical
(91.53
0.97%),
nitrogen
(86.27
1.60%)
phosphorus
(94.19
2.33%),
achieved
treatment
first-order
(k)
values.
In
addition,
growth
kinetics
logistic
model
fit
best
compared
modified
Gompertz
model,
based
on
validation
tools,
experimental
vs.
predicted
values,
coefficient
determination
(R2
>
0.9938),
efficiency
(ME
0.98)
root
mean
square
error
(RMSE
0.03).
post-harvest
characterization
revealed
proximate,
biochemical,
ultimate
elements
(carbon,
nitrogen)
structural
properties
were
significantly
higher
than
those
control
treatments.
Therefore,
findings
study
are
novel
provide
insight
into
synergistic
produced
farms
biological
treatment.
