Chimica Techno Acta,
Journal Year:
2024,
Volume and Issue:
12(1)
Published: Dec. 26, 2024
In
this
study,
we
prepared
hydrochar
(HCSP)
from
Spirogyra
sp.
algae
(SP)
as
adsorbent
to
eliminate
malachite
green
(MG)
dye
and
conducted
the
regeneration
study.
SP
HCSP
were
characterized
using
FTIR,
XRD,
SEM,
BET.
The
adsorption
performance
was
evaluated
under
various
conditions
of
pH,
contact
time,
concentration,
temperature.
optimum
at
pH
8
for
MG
adsorption.
suitable
kinetics
model
PSO,
isotherm
tended
be
Freundlich
model.
maximum
capacity
(Qmax)
obtained
Langmuir
calculation
30
°C,
34.96
mg/g
99.01
mg/g,
respectively.
thermodynamic
parameters
indicated
endothermic
spontaneous
processes,
with
exhibiting
greater
spontaneity
than
SP.
Regeneration
studies
demonstrated
that
materials
could
reused
up
4th
cycle
remaining
efficiency
69.37%
49.30%,
Compared
SP,
has
better
capacity.
Advances in Colloid and Interface Science,
Journal Year:
2024,
Volume and Issue:
335, P. 103338 - 103338
Published: Nov. 14, 2024
Efficient
removal
of
heavy
metals
and
other
toxic
metal
pollutants
from
wastewater
is
essential
to
protect
human
health
the
surrounding
vulnerable
ecosystems.
Therefore,
significant
efforts
have
been
invested
in
developing
practical
sustainable
tools
address
this
issue,
including
high-performance
adsorbents.
In
respect,
within
last
few
years,
graphene-based
aerogels/xerogels/cryogels
(GBAs)
emerged
drawn
attention
as
excellent
materials
for
removing
recovering
harmful
valuable
different
aqueous
media.
Such
an
upward
trend
mainly
due
features
aerogel
combined
with
properties
graphene
derivatives
aerogel's
network,
GBAs'
unique
three-dimensional
(3D)
porous
structure,
high
porosity,
low
density,
large
specific
surface
area,
exceptional
electron
mobility,
adjustable
rich
chemistry,
remarkable
mechanical
features,
tremendous
stability.
This
review
offers
a
comprehensive
analysis
fundamental
aspects
phenomena
related
application
GBAs
removal.
Herein,
we
cover
all
types
(bottom-up)
synthesized
GBAs,
true
microporous
aerogels
well
3D
open-cell
interconnected
mesoporous
macroporous
aerogels,
foams,
sponges.
Indeed,
provide
insights
into
understanding
suitability
such
important
by
revealing
mechanisms
involved
factors
inducing
controlling
highly
selective
behavior
these
distinctive
Besides
conventional
adsorptive
pathways,
critically
analyzed
ability
electrochemically
capture
(i.e.,
electrosorption)
their
efficiency
detoxification
through
reductive
adsorption-reduction-readsorption).
We
also
covered
reusability
aspect
(GAs)-based
adsorbents,
which
strongly
linked
outstanding
stability
efficient
desorption
captured
metals.
Furthermore,
view
numerous
environmental
benefits,
development
magnetically
recoverable
GAs
highlighted.
Moreover,
shed
light
on
potential
scalable
implementation
evaluating
performance
continuous
processes
while
highlighting
versatility
demonstrated
remove
multiple
contaminants
along
Finally,
provides
readers
accessible
overview
critical
discussion
major
recent
achievements
regarding
applications
GAs-based
adsorbents
ions
Along
our
recommendations
suggestions
future
work
new
research
directions
opportunities,
aims
serve
resource
researchers
field
treatment
inspire
further
progress
towards
next-generation
expanding
application.
