Journal of Water Process Engineering,
Journal Year:
2023,
Volume and Issue:
53, P. 103869 - 103869
Published: June 1, 2023
Coagulation–flocculation
is
currently
the
best
practice
for
aquaculture
effluent
treatment,
and
biobased
compounds
are
emerging
as
coagulant/flocculants.
This
study
aimed
to
characterize
bioflocculant
produced
from
Serratia
marcescens
applied
it
treat
artificial
turbid
water
(kaolin
substrate)
real
using
combination
of
one
variable
at
a
time
(OVAT)
response
surface
methodology
(RSM)
analyses.
The
by
S.
was
characterized
anionic
flocculant
with
isoelectric
point
pH
1.7
13.3.
At
7,
its
protein
content
1.3
μg/mL,
total
carbohydrate
level
0.53
mg/L.
consisted
various
carboxylic
acids
enzyme
intermediates,
indicating
presence
polysaccharides
protein.
Comparison
optimized
treatment
conditions
between
OVAT
RSM
showed
that
rapid
mixing
speed,
slow
time,
sedimentation
were
most
influential
factors
coagulation–flocculation.
required
lower
speed
(125
rpm)
shorter
(39
min)
than
wastewater
(160
rpm
67
min,
respectively).
low
performance
in
treating
due
more
complex
characteristics
compared
those
kaolin
substrate.
characterization
terms
level,
content,
has
never
been
reported.
obtained
results
may
provide
an
insight
into
potential
this
compound
substitute
widely
used
chemical
flocculants
reliable
performance.
findings
also
be
basis
upscale
coagulation–flocculation
being
laboratory
wastewater,
especially
use
compounds.
Toxics,
Journal Year:
2025,
Volume and Issue:
13(2), P. 131 - 131
Published: Feb. 11, 2025
Aquaculture
wastewater
treatment
not
only
assists
in
alleviating
the
scarcity
of
clean
water
for
daily
usage
and
environmental
pollution,
but
also
generates
valuable
byproducts.
This
paper
aims
to
review
generation
from
aquaculture
sector,
its
characteristics,
available
technologies,
while
comprehensively
discussing
adoption
a
biocircular
economy
approach
through
waste
valorization.
With
rich
nutrients,
such
as
nitrogenous
compounds,
presence
phosphorus
effluent,
these
aspects
could
be
explored
valorized
into
biofertilizers,
broadening
their
application
aquaponics
hydroponics,
well
algae
daphnid
cultivation.
Biofertilizer
can
used
agriculture
because
it
contains
essential
elements
needed
by
plants.
Thus,
methods
converting
nutrients
biofertilizers
terms
sludge
recovery
accomplished
via
anaerobic
aerobic
digestion,
drying,
composting,
vermicomposting.
Moving
forward,
effluent
is
addressed
under
re-engaging
effluents
production
cycle.
The
enhancement
biomass
uses
aquaponics,
cultivation,
co-cultivation,
presents
opportunities
nutrient
ensuring
that
non-toxic
safely
discharged
external
bodies.
has
potential
revolutionize
aquaculture,
shifting
economic
model
management
linear
system
circular,
more
sustainable
one.
