Desalination and Water Treatment,
Journal Year:
2023,
Volume and Issue:
316, P. 290 - 298
Published: Dec. 1, 2023
p-nitrophenol
(4-NP)
is
a
common
raw
material
in
the
industrial
production
of
many
valuable
substances.With
rapid
development
chemical
industry,
4-NP
has
increased
substantially.However,
due
to
its
characteristic
toxicity,
inevitably
causes
pollution
environment
during
synthesis
and
usage.In
this
paper,
sodium
borohydride
(NaBH
4
)
ferric
chloride
(FeCl
3
•6H
2
O)
were
used
as
materials
prepare
iron
nanoparticles
by
liquid
phase
reduction
technique,
their
performance
pollutant
degradation
was
investigated.The
experimental
results
showed
that
presented
excellent
for
4-NP.When
concentration
15
mg/L,
only
0.25
g/L
degraded
more
than
74%
1
h.
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(12), P. 6107 - 6117
Published: March 11, 2024
Many
advanced
materials
are
designed
for
the
removal
of
heavy
metal
ions
from
water.
However,
eliminating
trace
wastewater
to
meet
drinking
water
standards
remain
a
major
challenge.
Herein,
epoxy
group-functionalized
open-cellular
beads
synthesized
by
UV
polymerization
water-in-oil-in-water
system.
The
groups
further
transformed
into
diethylenetriaminepentaacetic
acid
(DTPA)
with
hexamethylene
diamine
as
bridging
agent.
resulting
material
(DTPA@polyHIPE
beads)
can
eliminate
Cu(II),
Cr(III),
Pb(II),
Fe(III),
or
Cd(II)
When
0.15
g
DTPA@polyHIPE
used
adsorb
20
mg
in
100
mL
water,
residue
concentrations
and
reduced
0.08,
0.06,
0.02,
0.09,
0.07
mg/L,
respectively.
adsorption
efficiencies
these
all
higher
than
99.55%.
adsorbent
is
durable
exhibits
good
recyclability
retaining
an
capacity
≥91%
after
5
cycles.
negative
values
ΔG
process
indicate
that
feasible
spontaneous.
chemical
follows
Freundlich
model,
indicating
multilayer
heterogeneous
adsorption.
have
great
potential
application
dealing
ion
polluted
Desalination and Water Treatment,
Journal Year:
2024,
Volume and Issue:
317, P. 100089 - 100089
Published: Jan. 1, 2024
This
article
delves
into
the
utilization
of
biochar
derived
from
diverse
waste
sources
as
an
effective
adsorbent
for
removing
heavy
metals
wastewater.
A
comprehensive
quantitative
analysis
was
conducted,
scrutinizing
key
characteristics
sourced
various
materials
its
metal
adsorption
potential
in
wastewater
treatment.
is
based
on
extensive
dataset
spanning
2013
to
2023,
comprising
a
total
608
articles
retrieved
Scopus
database.
Advanced
bibliometric
and
scientific
mapping
techniques
were
employed
facilitated
by
tools
like
VOSviewer
Tableau
gain
insights
visualize
trends
this
field.
The
findings
indicate
consistent
upward
trajectory
publication
research
documents
over
recent
years.
Several
countries
have
emerged
productive
hubs,
demonstrating
substantial
influence
within
their
respective
regions
through
wide-ranging
collaborations.
Notably,
China,
India,
United
States,
South
Korea,
Australia,
Malaysia
stand
out
most
influential
contributors.
Furthermore,
study
explores
efficacy
adsorbing
ions,
shedding
light
relationships
between
these
variables.
Keyword
conducted
identify
current
hotspots
domain.
In
sum,
paper
offers
perspective
evolution
formidable
It
serves
catalyst
further
endeavors,
encouraging
scholars
explore
novel
or
modifications
that
can
enhance
performance
while
ensuring
stability
efficiency.
Langmuir,
Journal Year:
2023,
Volume and Issue:
39(51), P. 18958 - 18970
Published: Dec. 14, 2023
Simple
ball
milling
technology
can
simultaneously
improve
the
adsorption
performance
of
adsorbents
for
heavy
metals
and
organic
pollutants
has
attracted
increasing
attention.
Iron-modified
biochar
(Fe@MBC)
was
prepared
by
one-step
milling,
characterization
results
proved
that
FeCl3
successfully
loaded
on
biochar.
The
removal
rates
Cr(VI)
tetracycline
hydrochloride
(TC)
Fe@MBC
were
increased
88.27%
82.64%
compared
with
BC.
average
pore
size,
oxygen-containing
functional
groups
graphitization
degree
are
higher
than
those
BC,
which
is
more
conducive
to
promoting
adsorption.
isotherms
show
TC
surface
conforms
Langmuir
type
single-layer
Freundlich
model
multilayer
adsorption,
respectively.
maximum
capacities
25.46
66.91
mg·g–1,
Kinetic
experiments
process
consistent
pseudo-second-order
chemical
a
spontaneous
endothermic
becomes
obvious
as
temperature
increases.
increase
in
solution
pH
significant
impact
rate
Fe@MBC.
When
value
from
3
11,
decreased
53.74%
17.16%,
presence
PO43-,
CO32-,
K+,
Cu2+
significantly
affects
Fe@MBC,
PO43–
CO32–
also
affect
Cr(VI).
Mechanistic
studies
ion
exchange,
electrostatic
interaction,
filling,
hydrogen
bonding
contribute
mechanism
involves
complexation
redox
reactions,
π–π
bonds
van
der
Waals
forces.
green
efficient
adsorbent.
Environmental Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 13
Published: Feb. 16, 2024
Capacitive
deionisation
(CDI)
is
an
emerging
eco-economic
water
reclamation
technology
that
can
remove
inorganic
salts
and
heavy
metals.
Biomass-derived
carbon
electrodes
have
attracted
the
scientific
communities
in
recent
years
due
to
their
economic
feasibility
sustainability.
However,
electrochemical
performance
needs
be
improved
achieve
durability
reusability.
Hence,
present
study
develops
rice
straw-derived
phosphorous-doped
(P-doped)
as
electrode
for
mitigating
Cr(VI)
ions.
Phosphorus
doping
of
biocarbon
enhances
properties,
including
increased
electrical
conductivity,
charge
storage
capacity,
enhanced
ion
adsorption
capabilities.
Here,
Phosphoric
acid
plays
a
dual
role
activation
physico-electrochemical
properties.
The
synthesised
material
was
found
P-doped
with
better
pore
distribution,
which
confirmed
through
FESEM-EDX
analysis.
Further,
physicochemical
properties
are
enriched
possess
surface
area
753
m2/g.
cyclic
voltammetry
shows
specific
capacitance
67
F/g
ions,
15
times
more
than
non-doped
carbon.
CDI
studies
were
performed
optimisation
operational
parameters
mitigation
ions
efficient
at
pH
2
applied
voltage
2V.
electrode's
real-time
chrome
wash
effluent
confirms
its
potentiality
has
scope
upon
optimisation.
experimental
data
fits
well
pseudo
first-order
kinetics,
ensures
nature
electrosorption
physisorption.
