Chemistry - An Asian Journal,
Год журнала:
2023,
Номер
18(11)
Опубликована: Апрель 7, 2023
An
emerging
"one
stone,
three
birds"
strategy
was
proposed
to
realize
the
value-added
disposal
of
solid
waste
coal
gangue
(CG),
synthesis
superb
adsorbent
and
efficient
decontamination
pollutants
(i.
e.,
dyes,
heavy
metals).
In
this
process,
metal
ions
extrated
from
calcined
(CCG)
reconstituted
by
a
one-step
hydrothermal
process
yield
porous
polymetallic
silicate
(named
HECCGA8h).
The
has
high
adsorption
capacity
270.27
185.53
mg/g
for
methylene
blue
(MB)
Cd(II),
respectively.
actual
waters,
removal
rate
MB
reaches
99.8%
(in
Yangtze
River
water)
99.42%
Seawater),
Cd(II)
99.11%
92.52%
Thermokinetic
analysis
showed
that
HECCGA8h
is
spontaneous
endothermic
with
increased
entropy,
exothermic.
mainly
driven
synergism
hydrogen
bond,
electrostatic
attraction
ion
exchange,
complexation
exchange
between
surface
group
Cd(II).
This
research
provides
new
way
realization
"treating
waste".
Desalination and Water Treatment,
Год журнала:
2024,
Номер
319, С. 100404 - 100404
Опубликована: Май 23, 2024
Both
biochars
(BCs)
and
modified-biochars
(MBCs)
for
toxic-metal/metalloid
ions
(TMIs)
removal
from
water
have
caught
much
attention
owing
to
their
exceptional
properties
such
as
eco-friendly,
low-carbon
emission
cost-effective.
However,
reviews
on
the
exploration
of
theoretical
models
BCs
MBCs
in
various
systems
are
unobtainable.
To
give
a
summary
TMIs
solution
systems,
this
review
will
center
some
typical
kinetic
isotherm
equations
sorption
single,
mixed,
mixed
metal
ions/organic
substance
solutions.
Typically,
two-parameter
three-
parameter
were
stressed.
The
comparisons
these
drawn.
It
was
found
that
P-2nd-O
model,
Langmuir
Freundlich
dominating
adsorption
manners
MSSs.
Especially,
only
Cu(II),
Pb(II),
Cr(VI)
Cd(II)
sorption,
well
isotherms
Cu(II)
reported
We
hope
be
favorable
accurately
selecting
optimal
explain
processes
different
metal-solution
systems.
