ACS ES&T Engineering,
Год журнала:
2022,
Номер
2(12), С. 2301 - 2310
Опубликована: Окт. 4, 2022
Coagulation
is
one
of
the
most
common
processes
in
water
treatment.
Charge
neutralization
and
sweep
flocculation
are
recognized
as
primary
coagulation
mechanisms.
However,
in-depth
understanding
on
floc
growth,
breakage,
regrowth
still
unclear.
In
this
study,
formation,
alum
flocs
with
humic
acid
(HA)
added
either
before
coagulant
addition
or
during
breakage
stage
were
investigated.
The
size
continuously
decreased
increase
events,
eventually,
to
a
stable
value.
growth
was
not
affected
by
HA
addition.
it
prevented
stage,
prevention
extent
increased
dose.
Similar
results
also
found
for
natural
organic
matter
(NOM)
from
real
surface
water.
These
suggested
that
HA/NOM
can
cover
active
site
surface,
coverage
differed
fresh
(newly
precipitated)
old
(after
breakage),
which,
respectively,
represent
case
conventional
sludge
recirculation.
Based
these
findings,
illustration
put
forward.
We
concluded
charge
mechanisms
only
explained
possibility
approaching
each
other;
whether
connect
other
depends
activated
functional
groups
surface.
study
revealed
underlying
mechanism
"collision
effectiveness"
coagulation,
complementing
existing
process.
New Biotechnology,
Год журнала:
2023,
Номер
78, С. 84 - 94
Опубликована: Окт. 9, 2023
Microalgae-based
wastewater
treatment
has
been
conceived
to
obtain
reclaimed
water
and
produce
microalgal
biomass
for
bio-based
products
biofuels
generation.
However,
harvesting
is
challenging
expensive,
hence
one
of
the
main
bottlenecks
full-scale
implementation.
Finding
an
integrated
approach
that
covers
concepts
engineering,
green
chemistry
application
microbial
anabolism
driven
towards
processes,
mandatory
widespread
establishment
microalgae
plants.
By
using
nature-based
substances
applying
chemical
functionalization
in
already
established
methods,
costs
processes
could
be
reduced
while
preventing
contamination.
Moreover,
produced
during
have
unique
culture
characteristics,
such
as
consortia,
which
are
primarily
composed
bacteria,
should
accounted
prior
downstream
processing.
The
aim
this
review
examine
recent
advances
recovery
systems,
considering
impact
consortia
variability.
available
technologies,
coagulation/flocculation,
coupled
sedimentation
differential
air
flotation,
provided.
Additionally,
promising
technologies
discussed,
including
autoflocculation,
bioflocculation,
new
filtration
materials,
nanotechnology,
microfluidic
magnetic
methods.
Biotechnology Reports,
Год журнала:
2023,
Номер
39, С. e00805 - e00805
Опубликована: Июнь 16, 2023
Sugarcane
bagasse
is
an
abundant
and
renewable
agricultural
waste
material
generated
by
the
sugar
industry
worldwide.
The
use
of
sugarcane
as
a
bio-coagulant
precursor
in
water
treatment
eco-friendly
cost-effective
approach
that
has
shown
great
potential.
This
article
reviewed
prospects
challenges
utilizing
for
treatment.
past
studies
explored
properties
chemical
composition
bioactive
compounds
can
be
extracted
from
it,
well
their
potential
coagulation
performance
It
was
observed
there
are
few
have
been
published
on
subject.
effectiveness
bagasse-based
coagulants
varies
depending
several
factors,
such
pH,
temperature,
quality
parameters.
However,
lack
standardization
production
challenge
needs
to
addressed.
Additionally,
optimization
extraction
processing
methods
enhance
investigated
further.
In
conclusion,
holds
promise
future
sustainable
used
highlights
importance
exploring
alternative
materials
