Chemosphere,
Journal Year:
2024,
Volume and Issue:
360, P. 142420 - 142420
Published: May 23, 2024
The
ubiquitousness
of
per-
and
polyfluoroalkyl
substances
(PFAS)
is
a
big
concern
PFAS
remediation
urgently
needed
such
as
via
degradation.
While
previous
studies
have
explored
ultrasonic
degradation
PFAS,
work
evaluating
the
operational
parameters
rare,
especially
concerning
real
wastes
aqueous
film-forming
foam
(AFFF)
fractionate
(FF).
This
study
investigates
key
affecting
efficiency
encompassing
ultrasonication
frequency
(580-1144
kHz),
power
intensity
(125-187.5
W),
initial
concentration
(0.08-40
ppm),
treatment
duration
(0.5-3
h),
sample
volume
(100-500
mL),
structure
(perfluorooctanoic
acid
or
PFOA;
perfluorooctane
sulfonate
PFOS;
6:2
fluorotelomer
FTS).
defluorination
kinetics
different
from
removal/degradation
due
to
generation
intermediates,
suggesting
complex
mechanism,
which
should
be
evaluated
close
mass
balance
effectively.
Notably,
optimised
system
achieves
∼125%
/
∼115%
in
AFFF/FF
example
(compared
∼65%
∼97%
removal)
despite
their
composition
involvement
total
oxidisable
precursor
(TOP)
assay.
In
meantime,
few
new
are
detected
post-treatments,
including
perfluorohexane
sulfonic
(PFHxS)
10:2
(10:2
FTS)
AFFF,
sulfonamide
(FOSA)
8:2
(8:2
FF,
again
mechanism.
Overall,
effective
degrade
wastes,
advancing
its
potential
for
scale-up
applications.
Molecules,
Journal Year:
2021,
Volume and Issue:
26(4), P. 943 - 943
Published: Feb. 10, 2021
Microalgae
are
known
as
a
rich
source
of
bioactive
compounds
which
exhibit
different
biological
activities.
Increased
demand
for
sustainable
biomass
production
important
components
with
various
potential
especially
therapeutic
applications
has
resulted
in
noticeable
interest
algae.
Utilisation
microalgae
multiple
scopes
been
growing
industries
ranging
from
harnessing
renewable
energy
to
exploitation
high-value
products.
The
focuses
this
review
on
and
the
use
value-added
obtained
current
application
pharmaceutical,
nutraceutical,
cosmeceutical,
agri-food
industries,
well
bioremediation.
Moreover,
work
discusses
advantage,
new
beneficial
strains,
applications,
limitations,
research
gaps
future
prospect
industry.
Bioengineered,
Journal Year:
2022,
Volume and Issue:
13(4), P. 10412 - 10453
Published: April 1, 2022
The
scarcity
of
water
resources
and
environmental
pollution
have
highlighted
the
need
for
sustainable
wastewater
treatment.
Existing
conventional
treatment
systems
are
energy-intensive
not
always
able
to
meet
stringent
disposal
standards.
Recently,
algal-bacterial
emerged
as
environmentally
friendly
processes
resource
recovery.
work
on
principle
symbiotic
relationship
between
algae
bacteria.
This
paper
comprehensively
discusses
most
recent
studies
treatment,
factors
affecting
aspects
recovery
from
biomass.
interaction
includes
cell-to-cell
communication,
substrate
exchange,
horizontal
gene
transfer.
quorum
sensing
(QS)
molecules
their
effects
algal–bacterial
interactions
briefly
discussed.
effect
such
pH,
temperature,
C/N/P
ratio,
light
intensity,
external
aeration
been
An
overview
modeling
has
provided.
potential
removing
micropollutants
because
diverse
possible
algae-bacteria.
removal
mechanisms
–
sorption,
biodegradation,
photodegradation,
reviewed.
harvesting
methods
presented.
major
challenges
associated
with
real
scale
implementation
future
perspectives
Integrating
algal
biorefinery
concept
reduces
overall
waste
component
in
a
system
by
converting
biomass
into
useful
product,
resulting
that
contributes
circular
bioeconomy.
