Abstract
The
massive
influx
of
Sargassum
spp
.
to
the
Mexican
Caribbean
coasts
poses
significant
environmental,
economic,
and
health
challenges.
This
study
explores
potential
use
as
a
biosorbent
material
for
contaminant
removal.
Some
pollutants
found
in
water
bodies
some
coastal
areas
are
those
derived
from
soaps
detergents,
such
sulfates
phosphates.
Therefore,
capacity
remove
this
type
substance
dissolved
was
studied.
removal
efficiency,
both
pollutants,
greater
than
90%
when
concentration
900
mg*L
−1
used.
be
used
several
cycles
demonstrated,
maintaining
its
capacity.
structural
changes
after
biosorption
were
characterized
by
scanning
electron
microscopy,
demonstrating
presence
phosphates
on
spp.
work
proposes
an
efficient,
sustainable
system
based
Graphical
abstract
Schematic
representation
using
Water,
Год журнала:
2024,
Номер
16(3), С. 400 - 400
Опубликована: Янв. 25, 2024
Safeguarding
drinking
water
is
a
major
public
health
and
environmental
concern
because
it
essential
to
human
life
but
may
contain
pollutants
that
can
cause
illness
or
harm
the
environment.
Therefore,
continuous
research
necessary
improve
treatment
methods
guarantee
its
quality.
As
part
of
this
study,
effectiveness
coagulation–flocculation
using
aluminum
sulfate
(Al2(SO4)3)
was
evaluated
on
very
polluted
site.
Samplings
were
taken
almost
every
day
for
month
from
site,
samples
characterized
by
several
physicochemical
properties,
such
as
hydrogen
potential
(pH),
electrical
conductivity,
turbidity,
organic
matter,
ammonium
(NH+4),
phosphate
(PO43−),
nitrate
(NO3−),
nitrite
(NO2−),
calcium
(Ca2+),
magnesium
(Mg2+),
total
hardness
(TH),
chloride
(Cl−),
bicarbonate
(HCO3−),
(SO42−),
iron
(Fe3+),
manganese
(Mn2+),
(Al3+),
potassium
(K+),
sodium
(Na+),
complete
alkalimetric
titration
(TAC),
dry
residue
(DR).
Then,
these
treated
with
Al2(SO4)3
jar
test
method,
which
common
method
determine
optimal
amount
coagulant
add
based
characteristics.
A
mathematical
model
had
been
previously
created
support
vector
machine
predict
dose
according
parameters
temperature,
pH,
TAC,
turbidity.
This
step
repeated
at
end
each
year,
second
characterization
carried
out
in
order
compare
them
those
raw
water.
The
results
showed
effective
elimination
various
pollutions,
high
rate,
thus
demonstrating
Al2(SO4)3.
measured
after
significant
reduction
majority
parameters.
These
demonstrated
eliminating
pollutions
present
They
also
stress
importance
continued
field
quality
protect
Journal of Water Process Engineering,
Год журнала:
2023,
Номер
53, С. 103869 - 103869
Опубликована: Июнь 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.
Desalination and Water Treatment,
Год журнала:
2024,
Номер
318, С. 100339 - 100339
Опубликована: Апрель 1, 2024
Since
the
last
decades,
water
stress
challenges
caused
by
climate
change
have
posed
a
significant
concern
for
treatment
and
re-use
of
treated
wastewater.
Conventional
methods
employ
chemicals
as
coagulants-flocculants,
which
pose
serious
threat.
Hence,
it
has
led
to
gradual
increase
in
use
natural
plants
promising
safe
alternatives.
In
present
work,
Austrocylindropuntia
subulata
plant
was
used
first
time
coagulant-flocculant
wastewater
treatment.
The
raw
chlorenchyma
powder
characterized
SEM,
FTIR,
EDX,
results
showed
very
strong
resemblance
with
composition
Opuntia
ficus
indica.
biocoagulant-flocculant
obtained
simple
extraction
using
distilled
water.
An
optimization
dose
test
demonstrated
that
mass
0.1
g
decreases
approximately
99%
turbidity.
After
year
storage,
retained
same
efficiency.
extract's
properties
remained
stable
after
three
months
but
developed
an
unpleasant
odor
brownish
color
due
microbial
oxidation
organic
components.
Water,
Год журнала:
2024,
Номер
16(2), С. 340 - 340
Опубликована: Янв. 19, 2024
The
study
aims
to
contribute
valuable
insights
into
the
potential
applications
of
photocatalyst,
particularly
in
realms
sustainable
energy
and
environmental
remediation.
Here,
Zn-doped
NiO
nanoparticles
with
different
mole
percentages
zinc
ingredients
are
produced
analyzed.
Synthesized
were
evaluated
structurally,
optically,
morphologically,
elementally,
photocatalytically.
According
X-ray
diffraction
analysis,
cubic
hexagonal
formed,
Fourier
transform
infrared
spectroscopy
revealed
metal
dopants
metal-oxygen
stretching,
as
well
Zn
substitution
stabilization.
A
UV
analysis
that
reduced
visible
light
absorption
bandgap.
decrease
bandgap
indicates
importance
incorporation
its
interface
NiO.
Electron
scanning
microscopy
transmission
electron
confirmed
exhibited
quasi-spherical
morphologies
contained
Ni,
Zn,
O
elements.
Photocatalytic
activity
synthesized
increased
increasing
content,
achieving
a
maximum
at
8%
doping
lattices
92%.
Through
XPS
valencies
elements
demonstrated,
movements
bonding
between
atoms.
on
oxide
surface
led
charge
separation
radical
reactions,
resulting
enhanced
degradation
phorate,
salbutamol,
rhoda
mine
B
activities.
Hence,
proposed
effective
photocatalysts
for
findings
expected
have
implications
advancing
field
photocatalysis
addressing
challenges
related
pollution
sustainability.
