Polish Journal of Environmental Studies,
Год журнала:
2022,
Номер
32(2), С. 1177 - 1187
Опубликована: Дек. 23, 2022
Aquaculture
sector
plays
important
role
for
the
economic
development
in
Malaysia,
but
environmental
concerns
are
arising
due
to
pollution
caused
by
discharge
of
untreated
wastewater.Coagulation-flocculation-sedimentation
is
currently
best
practice
aquaculture
wastewater
treatment.This
research
aims
compare
performance
chemical-based
(alum)
and
bio-based
(neem
leaves)
coagulants
treating
effluent
while
also
studying
feasibility.Alum
showed
higher
removal
efficiencies
total
suspended
solid
(99.7%),
turbidity
(98.8%),
color
(97.3%),
neem
coagulant
a
lower
dosage
needed
achieve
optimum
performance.The
cost
included
capital
operational
costs,
benefit
potential
water
reuse
reclaimed
valuable
products
from
sludge.The
net
profit
reveals
negative
values
both
scenarios,
cost-benefit
ratio
0
0.06
alum
coagulants,
respectively.These
indicated
that
scenarios
not
feasible
gain
economical
profit,
utilization
present
sludge
utilization.A
deeper
analysis
using
Social
Return
on
Investment
(SROI)
method
suggested
include
non-traditional
calculation
such
as
social
scenarios.
Reviews in Environmental Science and Bio/Technology,
Год журнала:
2023,
Номер
22(4), С. 969 - 1008
Опубликована: Окт. 13, 2023
Abstract
The
aquaculture
industry
is
rapidly
developing,
generating
a
high
amount
of
wastewater.
Inland
effluents
contain
nutrients
and
other
substances
that
can
cause
eutrophication
the
emergence
resistive
organisms
if
released
into
environment.
Hence,
wastewater
should
be
treated
appropriately
for
reuse
in
different
applications
or
safely
environment,
promoting
sustainable
circular
economy.
current
review
provides
insight
generation,
constituents,
treatment
through
various
technologies.
This
study’s
technologies
could
classified
as
physical,
chemical,
biological.
SWOT
analysis
was
conducted
on
each
technology
to
provide
an
in-depth
understanding
advantages
drawbacks.
Suggestions
were
also
stated
shed
light
importance
means
transition
toward
Graphical
abstract
Heliyon,
Год журнала:
2024,
Номер
10(7), С. e27584 - e27584
Опубликована: Март 19, 2024
The
growing
problem
of
industrial
pollution
in
developing
countries,
especially
Ethiopia,
has
sparked
serious
issues
about
the
quality
water,
particularly
when
it
comes
to
effluent
from
wet
coffee
processing
industries.
In
response,
this
study
investigates
potential
utilizing
natural
coagulants,
Acanthus
sennii
C.,
Moringa
stenopetala
B.,
and
Aloe
vera
L.,
either
individually
or
combination,
for
treatment
effluent.
Methodologically,
systematically
varies
operational
parameters,
including
coagulant
dose,
pH
levels,
stirring
speed,
time,
evaluate
their
impact
on
coagulation
efficiency.
Experimental
data
undergo
statistical
analysis,
employing
ANOVA,
while
computational
optimization
techniques
are
employed
using
Design
Expert
software
determine
optimal
conditions.
Notably,
blended
form
three
coagulants
emerges
as
promising,
yielding
conditions
0.750
g/L
dosage,
8.76,
agitation
speed
80.73
rpm,
time
19.23
min.
Under
these
optimized
conditions,
achieves
remarkable
removal
efficiencies,
approximately
99.99%
color
98.7%
turbidity.
These
findings
underscore
efficiency
form,
sustainable
wastewater
processing.
Results in Chemistry,
Год журнала:
2024,
Номер
7, С. 101390 - 101390
Опубликована: Янв. 1, 2024
The
ability
of
mixed
neem,
cassava,
and
wild
betel
plant
leaves
to
act
as
plant-based
coagulants
was
tested
in
real
aquaculture
wastewater
through
the
coagulation-flocculation
process.
performance
coagulant
(PBC)
compared
with
that
chemical
(alum)
observe
removal
efficiency
turbidity,
TSS,
color,
COD.
Ratio,
a
new
approach,
used
by
selecting
TSS
an
indicator
or
index
substitute
for
dosage
term
calculated
based
on
simplified
equation.
extracted
medium
these
prepared
using
water
extraction.
Initial
characterizations
showed
PBC
had
some
carbon
amine
groups
(as
also
confirmed
LC-MS)
average
zeta
potential
–22.83
±
0.62
mV.
Results
indicated
both
(plant-based
coagulants)
successfully
removed
measured
polluted
parameters
turbidity
(85.17
%),
(80.28
color
(59.42
COD
(54.63
%)
0.79
mg/L
mass
3.94
mg,
while
alum
gained
higher
(99.08
(98.71
(97.29
(75.31
698.4
349.2
respectively.
This
signaled
still
acted
best
coagulant,
but
promising
opportunity
coagulant.
Heliyon,
Год журнала:
2023,
Номер
9(6), С. e17284 - e17284
Опубликована: Июнь 1, 2023
The
batik
industry
has
been
one
of
the
main
family
businesses
in
most
east-coast
region
Malaysian
peninsula
for
many
years.
However,
appropriate
water
treatment
is
still
a
major
challenge
this
industry.
Stringent
laws
introduced
by
authorities
and
intention
to
protect
environment
are
factors
that
drive
researchers
search
suitable,
appropriate,
affordable
efficient
wastewater.
Treatment
research
on
wastewater
lacking
coagulation-flocculation
using
alum
was
chosen
as
stepping
stone
toward
selection
green
coagulants.
This
study
aimed
determine
best
conditions
flocculation-coagulation
standard
jar
test
method.
Four
were
investigated:
dosage
(0.1-3.5
g/L),
pH
(4-11),
settling
time
(0.5-24
h)
rapid
mixing
rate
(100-300
rpm).
Results
obtained
further
analysed
statistically
SPSS
software
prior
determining
significant
effect
variable
changes.
From
study,
process
found
be
at
1.5
g/L,
8,
4
h
100
rpm.
Chemical
oxygen
demand
(COD),
turbidity,
colour
total
suspended
solids
(TSS)
removed
70.7,
92.2,
88.4
100%,
respectively,
under
these
conditions.
showed
can
treated
chemical
means
alum.
indicates
need
forthcoming
developments
natural-based-coagulant-flocculants
sustainability
