IntechOpen eBooks,
Год журнала:
2023,
Номер
unknown
Опубликована: Март 22, 2023
Arsenic,
either
in
(III)
or
(V)
oxidation
states
forms,
is
a
hazardous
element
to
humans;
thus,
its
removal
from
aqueous
environments
of
the
utmost
priority
countries
where
this
problem
arises.
From
various
separation
technologies,
arsenic
via
biosorption
processing
attracted
an
interest,
because
besides
element,
allows
recycle
materials
that
many
cases
are
considered
as
wastes.
The
present
chapter
reviewed
most
recent
proposals
(2022
year)
about
using
biosorbents
remove
toxic
element.
Water Practice & Technology,
Год журнала:
2023,
Номер
18(12), С. 3065 - 3108
Опубликована: Ноя. 29, 2023
Abstract
Corn
or
maize
(Zea
mays
L.)
is
the
most
significant
grain
crop
worldwide
after
wheat
and
rice.
It
widely
cultivated
consumed
as
food,
feed,
industrial
raw
material,
along
with
emission
of
a
large
quantity
corn
waste.
Such
abundant,
renewable,
cheap
wastes
unique
chemical
compositions
can
be
efficiently
converted
into
adsorbents
for
elimination
dye-contaminated
water.
This
article
represents
an
extensive
review
use
corn/maize
waste-derived
sequestration
dyes
from
aqueous
media.
study
addressed
utilization
residues,
including
cob,
stalk,
straw,
husk,
silk,
precursors
adsorbents.
The
adsorption
behaviour,
mechanism,
regeneration
studied
adsorbent/dye
systems
were
identified.
was
observed
that
common
forms
corn/maize-derived
have
been
utilized
include
biosorbents,
biochars,
activated
carbons,
composites.
highest
capacity
(1,682.7
mg/g)
dye
(methylene
blue)
obtained
using
husk
composite-based
adsorbent.
Important
findings
future
ideas
are
finally
mentioned
corn/maize-based
materials
their
application
removal.
Journal of the Chinese Chemical Society,
Год журнала:
2024,
Номер
71(10), С. 1130 - 1153
Опубликована: Авг. 6, 2024
Abstract
Aromatic
organoarsenic
compounds
(AOCs)
have
proven
to
be
both
a
boon
and
curse
by
boosting
profit
maximization
in
livestock
production
at
the
same
time
contributing
pollution
of
water
bodies,
chief
cornerstone
ecosystem.
Interestingly,
photocatalytic
degradation
using
nanomaterials
has
emerged
as
an
effective
method
mitigate
AOC
pollution.
Thus,
this
study
aims
review
analyze
original
research
works
directed
toward
aqueous
environment.
In
study,
efficiency
various
is
investigated
for
different
aromatic
compounds.
addition,
empirical
analysis
was
conducted
on
impact
electron
trapping
radical
scavengers.
Furthermore,
kinetics
mechanisms
were
pragmatically
discussed.
Also,
recyclability,
stability,
real‐life
applicability
empirically
evaluated.
According
review,
most
nanomaterial
materials
had
maximal
efficiencies
>75%
AOCs
within
average
6–330
min.
The
scavenging
revealed
that
●
OH
O
2
mechanistically
play
major
role
than
electrons
holes.
Additionally,
it
shown
expended
photocatalysts
can
eluted
mostly
with
H
O/NaOH
recycled
up
3–6
rounds
>80%
cases
while
maintaining
their
structural
integrity.
This
indicates
potential
environmentally
friendly
industrially
scalable.
Ultimately,
gaps
highlighted,
which
help
researchers
identify
future
hotspots
open
doors
technique
advancement.
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
32, С. 103419 - 103419
Опубликована: Окт. 31, 2023
Sustainable
development
goals
have
emphasized
the
need
to
focus
on
water
treatment
mitigate
ever-rising
demands
for
clean
water.
High
costs
and
energy
requirements
been
Achilles'
heel
of
most
technologies.
Herein,
we
develop
cheap
lignin-derived
sorbents
prepared
by
microwave
(MW)
acid
precipitation
(AP)
treatments
raw
lignin
(RL)
Rhodamine-B
(RhB)
adsorption
in
aqueous
solution.
Our
findings
evidence
micro-
mesoporous
structures,
with
irregular
grain
size.
X-ray
diffraction
revealed
an
amorphous
material,
while
Fourier-transform
infrared
analysis
points
presence
carboxyl,
hydroxyl
sulfite
functional
groups,
which
may
facilitate
dye.
Adsorption
isotherm
kinetic
data
describe
complex
pore-driven
interactions,
based
Sips,
D-R
intraparticle
diffusion
models,
considering
sum
squared
error
values
obtained
from
nonlinear
regression
analysis.
efficiency
∼97%
is
obtainable
at
optimal
conditions
treated
(3
g/L
sorbent
dose,
720
min
contact
time
under
acidic
pH
conditions).
Thermodynamic
studies
that
RL-RhB
MW-RhB
are
driven
physisorption
∆H°
values,
stronger
interactions
occurred
AP-RhB,
high
enthalpy
(∼49
kJ/mol)
capacity
(∼2766
mg/g).
Van
der
Waals
attraction,
π-π
stacking,
pore-filling
mechanisms
among
several
occur
between
RhB
sorbents.
offer
a
way
valorize
as
alternative
pathway
economically
viable
sustainable
purification.
