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.
Sustainability,
Год журнала:
2022,
Номер
14(22), С. 15398 - 15398
Опубликована: Ноя. 19, 2022
Clothing,
one
of
the
basic
needs,
demands
growth
textile
industries
worldwide,
resulting
in
higher
consumption
and
pollution
water.
Consequently,
it
requires
extensive
treatment
effluent
for
environmental
protection
as
well
reuse
purposes.
Primary
treatment,
secondary
tertiary
are
three
major
phases
wastewater
treatment.
Secondary
under
aerobic
anaerobic
circumstances
is
carried
out
to
decrease
BOD,
COD,
phenol,
residual
oil,
color,
whereas
primary
utilized
remove
suspended
particles,
grease,
gritty
materials.
However,
biological
not
fully
capable
treating
water
according
discharge/reuse
standards.
Hence,
used
final
contaminants
from
wastewater.
Adsorption
regarded
most
feasible
processes
dye
metal
removal
consideration
cost
variation
adsorbent.
Though
membrane
filtration
an
efficient
process,
operation
limits
its
application.
It’s
unfortunate
that
there
isn’t
a
universally
applicable
solution
effluents.
Therefore,
only
flexible
strategy
combine
several
therapy
modalities.
Treatment
complicated,
high-strength
depending
on
pollutant
load
will
be
more
successful
if
physical,
chemical,
approaches
tandem.
Enforcement
stringent
regulation
policies,
increasing
costs
demand
freshwater,
rising
difficulties
associated
with
disposal
accelerating
efforts
toward
achieving
ZLD.
Additionally,
research
into
methods
extracting
useful
materials
has
blossomed
recent
years.
As
such,
purpose
this
analysis
give
holistic
overview
systems,
focus
zero
liquid
discharge
(ZLD)
resource
recovery,
both
which
may
hasten
transition
sustainable
management.
Current Research in Green and Sustainable Chemistry,
Год журнала:
2022,
Номер
5, С. 100306 - 100306
Опубликована: Янв. 1, 2022
The
introduction
of
inorganic
and
organic
contaminants
into
aquatic
systems
by
waste
streams
released
from
urban,
industrial,
agricultural,
other
sources
has
become
a
global
problem.
Heavy
metal
ions
synthetic
dyes
are
the
most
common
in
natural
systems,
causing
variety
life-threatening
problems
humans
living
things.
Graphene
oxide-based
nanocomposite
materials
have
been
widely
used
treatment
water/wastewater
containing
heavy
dye
pollutants
because
their
high
surface
areas,
excellent
mechanical
strength,
adaptability
to
different
functional
groups.
Adsorption-based
removal
aqueous
media,
as
well
photo-degradation
using
efficient
adsorbents
or
photo-catalysts
like
graphene-based
materials,
lot
benefits,
including
cost-effectiveness,
applicability
large-scale
operations,
efficiency,
reutilization.
majority
graphene
reduced
oxide
can
remove
degrade
over
90%
wastewater.
According
literature
review,
some
these
decontaminated
wastewater
extent
99
100%.
potential
based
nanomaterials
water/wastewater,
significant
features
nanomaterials,
adsorption
photo-catalytic
processes,
future
aspects,
relevant
current
investigations
all
discussed
this
review.
Sustainable Chemistry and Pharmacy,
Год журнала:
2022,
Номер
29, С. 100753 - 100753
Опубликована: Июнь 21, 2022
The
release
of
Indigo
Carmine
in
waterbodies
may
cause
serious
impact
aquatic
ecosystems
and
human
health.
There
is
an
interest
developing
green,
low-cost
effective
adsorbents
for
the
removal
toxic
dyes
from
textile
effluents.
This
study
proposed
adsorbent
material
at
nanoscale
using
waste
Moringa
oleifera
seeds
generated
after
oil
extraction.
were
grounded
to
obtain
nanoscale.
Batch-adsorption
tests
carried
out
evaluate
capacity
absorbent
retain
liquid
solutions.
following
variables
studied:
pH,
adsorbent-dye
ratio,
contact
time,
initial
dye
concentration
temperature.
adsorption
process
fitted
Langmuir
isotherm
equilibrium
power
function
kinetic
behavior.
maximum
nanoparticles
was
60.24
mg/g,
which
4.3
times
higher
than
that
bulk
seeds.
Thermodynamic
results
proved
spontaneous
exothermic.
Hydrogen
bonding,
electrostatic
interlinkage
π–π
interactions
identified
as
dominant
mechanisms
on
nanoparticles.
adsorption-desorption
resulted
a
slight
decrease
4
cycles,
94%
88%.
effluent
(85%)
similar
with
pure
solutions
(91%).
suggested
feasibility
seed
promising,
green
low
cost
wastewaters
dyes.
Frontiers in Microbiology,
Год журнала:
2023,
Номер
14
Опубликована: Апрель 3, 2023
Toxic
wastes
like
heavy
metals
and
dyes
are
released
into
the
environment
as
a
direct
result
of
industrialization
technological
progress.
The
biosorption
contaminants
utilizes
variety
biomaterials.
Biosorbents
can
adsorb
toxic
pollutants
on
their
surface
through
various
mechanisms
complexation,
precipitation,
etc.
quantity
sorption
sites
that
accessible
biosorbent
affects
its
effectiveness.
Biosorption’s
low
cost,
high
efficiency,
lack
nutrient
requirements,
ability
to
regenerate
main
advantages
over
other
treatment
methods.
Optimization
environmental
conditions
temperature,
pH,
availability,
factors
is
prerequisite
achieving
optimal
performance.
Recent
strategies
include
nanomaterials,
genetic
engineering,
biofilm-based
remediation
for
types
pollutants.
removal
hazardous
from
wastewater
using
biosorbents
strategy
both
efficient
sustainable.
This
review
provides
perspective
existing
literature
brings
it
up-to-date
by
including
latest
research
findings
in
field.
Water Research,
Год журнала:
2024,
Номер
252, С. 121248 - 121248
Опубликована: Фев. 2, 2024
This
review
explores
the
potential
and
challenges
of
combining
electrochemical,
especially
electrocoagulation
(EC)
process,
with
various
-
wastewater
treatment
methods
such
as
membranes,
chemical
treatments,
biological
methods,
oxidation
processes
to
enhance
pollutant
removal
reduce
costs.
It
emphasizes
advantages
using
electrochemical
a
pretreatment
step,
including
increased
volume
improved
quality
permeate
water,
mitigation
membrane
fouling,
lower
environmental
impact.
Pilot-scale
studies
are
discussed
validate
effectiveness
combined
EC
processes,
particularly
for
industrial
wastewater.
Factors
electrode
materials,
coating
integration
third
process
avenues
improving
sustainability
cost-effectiveness
processes.
also
discusses
factors
improvement
Advanced
Oxidation
Processes
(AOP).
The
conclusion
highlights
need
which
include
reducing
consumption,
evaluating
energy
efficiency,
conducting
pilot-scale
investigations
under
continuous
flow
conditions.
Furthermore,
it
future
research
on
materials
technology
commercialization.
Overall,
this
underscores
importance
in
meeting
demand
clean
water
resources
further
optimization
implementation
applications.
