Nanomaterials,
Год журнала:
2024,
Номер
14(6), С. 522 - 522
Опубликована: Март 14, 2024
Carbon
nanomaterials
are
promising
adsorbents
for
dye
removal
from
wastewater
also
due
to
their
possible
surface
functionalization
that,
in
principle,
can
increase
the
adsorption
rate
and
provide
regeneration.
To
investigate
real
advantages
of
functionalization,
we
synthesized
characterized
through
IR,
TGA,
TEM,
XPS
DLS
measurements
a
multi-walled
carbon
nanotube
(MWCNT)
derivative
bearing
benzenesulfonate
groups
(MWCNT-S).
The
obtained
material
demonstrated
have
good
dispersibility
water
better
capability
adsorb
methylene
blue
(MB)
compared
pristine
MWCNT
adsorbent.
Adsorption
kinetic
studies
showed
very
fast
process,
with
constant
significantly
higher
respect
not
only
that
unfunctionalized
adsorbent
but
those
widely
used
activated
carbons.
Moreover,
capacity
MWCNT-S
is
more
than
doubled
insoluble
adsorbent,
thanks
derivatives,
providing
larger
available
surface,
electrostatic
interactions
between
cationic
MB
anionic
sulfonate
groups.
Additionally,
reversibility
ionic
disclosed
possibility
release
adsorbed
pollutant
competition
salts,
regenerating
recovering
dye.
Indeed,
by
treating
1
h
M
NaCl,
regeneration
75%
was
obtained,
demonstrating
validity
this
strategy.
Environmental Science and Pollution Research,
Год журнала:
2024,
Номер
31(39), С. 51064 - 51097
Опубликована: Авг. 7, 2024
Water
is
an
indispensable
resource
for
human
activity
and
the
environment.
Industrial
activities
generate
vast
quantities
of
wastewater
that
may
be
heavily
polluted
or
contain
toxic
contaminants,
posing
environmental
public
health
challenges.
Different
industries
with
widely
varying
characteristics,
such
as
quantity
generated,
concentration,
pollutant
type.
It
essential
to
understand
these
characteristics
select
available
treatment
techniques
implementation
in
facilities
promote
sustainable
water
usage.
This
review
article
provides
overview
wastewaters
generated
by
various
commonly
applied
techniques.
The
advantages,
disadvantages
physical,
chemical,
biological
methods
are
presented.
Limnological Review,
Год журнала:
2024,
Номер
24(2), С. 126 - 149
Опубликована: Апрель 3, 2024
Synthetic
dyes,
exceeding
100,000
types
on
the
market
and
produced
at
a
global
scale
of
over
700,000
tons
annually,
are
extensively
used
in
textile
industry.
This
industry,
leading
contributor
to
water
contamination,
relies
dyes
like
reactive,
azo,
anthraquinone,
triphenylmethane,
resulting
substantial
usage
significant
effluent
generation.
A
modern
challenge
is
pollution
caused
by
dye-mixed
wastewater,
releasing
hazardous
chemicals
into
bodies
posing
threats
ecosystems,
plants,
human
health.
Traditionally,
physicochemical
techniques
have
addressed
dye-containing
but
their
drawbacks,
including
cost,
inefficiency,
potential
secondary
pollution,
steered
attention
towards
biological
alternatives.
Utilizing
microorganisms
enzymes,
these
methods,
such
as
microbial
cell
enzyme
immobilization,
biofilm
technique,
bioreactors,
biofuel/bioelectricity
production,
genetic
engineering,
emerged
promising,
cost-effective,
environmentally
friendly
solutions
for
efficient
dye
removal
from
wastewater.
review
paper
specifically
highlights
advanced
emphasizes
efficacy
addressing
challenges
posed
synthetic
dyes.
Through
systematic
recent
research
papers,
published
results,
observations,
this
provides
insights
emerging
treatment
strategies
effectively
removing
contaminants
Nanomaterials,
Год журнала:
2024,
Номер
14(6), С. 522 - 522
Опубликована: Март 14, 2024
Carbon
nanomaterials
are
promising
adsorbents
for
dye
removal
from
wastewater
also
due
to
their
possible
surface
functionalization
that,
in
principle,
can
increase
the
adsorption
rate
and
provide
regeneration.
To
investigate
real
advantages
of
functionalization,
we
synthesized
characterized
through
IR,
TGA,
TEM,
XPS
DLS
measurements
a
multi-walled
carbon
nanotube
(MWCNT)
derivative
bearing
benzenesulfonate
groups
(MWCNT-S).
The
obtained
material
demonstrated
have
good
dispersibility
water
better
capability
adsorb
methylene
blue
(MB)
compared
pristine
MWCNT
adsorbent.
Adsorption
kinetic
studies
showed
very
fast
process,
with
constant
significantly
higher
respect
not
only
that
unfunctionalized
adsorbent
but
those
widely
used
activated
carbons.
Moreover,
capacity
MWCNT-S
is
more
than
doubled
insoluble
adsorbent,
thanks
derivatives,
providing
larger
available
surface,
electrostatic
interactions
between
cationic
MB
anionic
sulfonate
groups.
Additionally,
reversibility
ionic
disclosed
possibility
release
adsorbed
pollutant
competition
salts,
regenerating
recovering
dye.
Indeed,
by
treating
1
h
M
NaCl,
regeneration
75%
was
obtained,
demonstrating
validity
this
strategy.
