Sustainable capacitive deionization process for enhanced chromium reclamation using functionalized biochar electrode
Chemical Engineering Communications,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 17
Published: Dec. 8, 2024
Water
pollution,
driven
by
urbanization
and
industrial
growth,
poses
a
significant
threat,
with
chromium
(Cr(VI))
discharge
from
industries
like
electroplating
tanneries.
To
address
this
issue,
capacitive
deionization
(CDI)
is
explored
for
its
low
energy
consumption
efficient
removal
of
ionic
contaminants.
However,
CDI
faces
challenges
related
to
electrode
costs
internal
resistance.
So,
it
necessary
find
low-cost
sustainable,
functional
the
hazardous
Cr(VI)
reclamation
without
conventional
additives
prevent
Industrial
Biochar,
product
pyrolysis
enriched
carbon
content,
replaces
activated
possesses
better
physicochemical
properties.
Similarly,
Chitosan
natural
derived
material
groups
that
can
adsorb
ions.
Apart
their
functionality,
they
also
improve
electrochemical
stability
capacitance
electrode.
In
response,
present
study
focuses
on
developing
cost-effective
electrodes
using
biochar/chitosan
(BC-CS)
composite.
The
utilization
chitosan
enriches
physico-electrochemical
properties
requirement
binder
development.
crosslinked
BC-CS
composite
demonstrates
three-fold
increase
in
specific
compared
biochar
Optimizing
ratio,
1:1
achieves
remarkable
96.7%
100
ppm
solution
3
h
at
2
V.
exhibits
promising
regeneration
capabilities
shows
potential
treating
real-time
chrome
wash
effluent
industries,
indicating
viability
water
reclamation.
Language: Английский
Performance of crosslinked bentonite-biocarbon electrodes for chromium mitigation through electrosorption
Separation Science and Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 21
Published: Dec. 26, 2024
Electrosorption
has
emerged
as
an
energy-efficient
technology
for
water
deionization,
yet
high
electrode
costs
limit
its
industrial
adoption.
The
present
study
introduces
a
sustainable,
cost-effective
design
by
crosslinking
bentonite
–
natural,
stable
clay
mineral
with
rice
straw-derived
biocarbon
(ZC-B)
to
enhance
chromium
(Cr(VI))
removal
from
wastewater.
ZC-B
electrodes
exhibited
specific
surface
area
(580
m2/g),
mesoporous
structure,
and
significant
capacitance
(~68
F/g),
optimized
Cr(VI)
removal.
tests
demonstrated
remarkable
efficacy,
achieving
99.57%
at
25
ppm
90.02%
250
ppm,
electrosorption
capacities
of
4.92
mg/g
52.73
mg/g.
Real-world
trials
on
chrome
plating
effluent
confirmed
the
electrode's
potential
industrial-scale
remediation,
adhering
disposal
standards.
This
work
establishes
bentonite-modified
promising,
eco-efficient
solution
heavy
metal
through
electrosorption.
Language: Английский