Juniper Online Journal Material Science,
Год журнала:
2023,
Номер
7(5)
Опубликована: Апрель 4, 2023
This
research
focuses
on
finding
an
alternative
to
expensive
cement
in
the
construction
industry
Pakistan
by
utilizing
pozzolanic
materials,
specifically
volcanic
ash/bentonite
clay.By
replacing
a
portion
of
with
bentonite
(10%,
20%,
30%,
and
40%),
study
demonstrates
potential
reduce
net
consumption
cost
while
also
contributing
more
durable
concrete
reducing
energy
greenhouse
gas
emissions.Physical
properties
such
as
setting
time
fineness
were
studied,
compressive,
flexural,
split
tensile
strength
mixes
compared
at
7
28
days
curing.While
decreased
successive
addition
bentonite,
rate
reduction
was
much
lower
than
days.The
results
validate
feasibility
developing
low-cost
using
partial
replacement
for
cement.
Chemical Engineering Science,
Год журнала:
2023,
Номер
281, С. 119129 - 119129
Опубликована: Июль 28, 2023
In
this
study,
for
the
first
time,
a
selenium-doped
mesoporous
biochar
was
prepared
and
efficiently
employed
sodium
diclofenac
reactive
orange
16
dye
adsorption.
The
characterization
results
indicated
that
selenium
doping
had
remarkable
impact
on
Biochar-Se
morphological
physicochemical
structures.
efficacy
of
developed
samples
(RO-16)
(DCF)
removals
fully
investigated.
For
both
molecules
(DCF
RO-16),
Liu's
equilibrium
model
offered
best
fitness
with
maximum
adsorption
capacity
values
355
mg
g−1
DCF
538
RO-16
Biochar-Se.
Multiple
mechanisms
including
pore
filling,
π-π
interaction,
hydrogen
bonding
between
DCF/RO-16
were
involved
in
process.
Se-nanoparticles
formed
metal–oxygen
bonds,
which
boosted
molecules.
current
work
feasible
approach
development
Se-doped
adsorbent
is
incredibly
effective
treating
wastewater.
Journal of Water Process Engineering,
Год журнала:
2023,
Номер
56, С. 104435 - 104435
Опубликована: Окт. 20, 2023
Edible
white-rot
mushrooms
are
organisms
that
cultivated
at
an
industrial
scale
using
wood-based
substrates.
The
mushroom
industry
has
estimated
annual
production
of
34
Mt
edible
mushrooms,
and
approximately
70
wt%
the
substrate
is
left
as
waste
known
spent
(SMS).
huge
volumes
SMS
generated
by
farms
hinder
proper
recycling,
meaning
combustion
or
open-field
burning
common
disposal
practices.
This
paper
shows
a
concept
could
help
reduce
environmental
impact
industry.
from
cultivation
shiitake
was
used
carbon
precursor
for
nitrogen-doped
activated
biochar
to
remove
reactive
orange-16
(RO-16)
azo
dye
water,
well
contaminants
two
synthetic
effluents
real
sewage
water.
Melamine
nitrogen
dopant
phosphoric
acid
activating
agent.
Samples
without
addition
melamine
were
comparison.
doping/impregnation
process
carried
out
in
one-step,
followed
pyrolysis
700
900
°C
1
h.
BET,
Raman
spectroscopy,
X-ray
photoelectron
spectroscopy
(XPS)
scanning
electron
microscopy
(SEM)
characterization
biochars.
specific
surface
area
doped
samples
slightly
lower,
i.e.,
1011
m2/g
(SMS-700
°C),
810
+
N),
1095
(SMS-900
943
N).
spectroscopic
analysis
showed
N-doped
biochars
had
more
defective
structures
than
non-doped
ones.
XPS
doping
with
led
formation
N-functionalities
on
particles.
kinetics
adsorption
represented
Avrami
model.
isotherms
well-fitted
Liu
maximum
capacities
(qmax)
RO-16
much
higher
biochars,
120
mg/g
216
168
393
effective
removal
produced
good
recyclability.
work
concludes
valuable
be
N-doping
helped
improve
performance
great
extent.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Июль 17, 2024
Abstract
Silver-zinc-nickel
spinel
ferrite
was
prepared
by
the
co-precipitation
procedure
with
precise
composition
Ag
0.1
Zn
0.4
Ni
0.5
Fe
2
O
4
for
bolstering
pollutant
removal
effectiveness
while
upholding
magnetic
properties
and
then
coated
a
mesoporous
silica
layer.
The
surface
characteristics
of
@mSiO
were
confirmed
using
EDX,
FT-IR,
VSM,
XRD,
TEM,
SEM,
BET
methods.
modification
Ag-Zn-Ni
layer
improves
texture
properties,
where
specific
area
average
pore
size
rose
to
180
m
/g
3.15
nm,
respectively.
ferrite@mSiO
has
been
utilized
as
an
efficient
adsorbent
eliminating
methyl
green
(MG)
indigo
carmine
(IC)
models
cationic
anionic
dyes
from
wastewater,
Studying
pH,
Pzc,
dosage,
dye
concentration,
temperature
showed
that
MG
carried
out
in
alkaline
media
(pH
=
12),
acid
medium
2)
effective
IC
removal.
Langmuir
isotherm
pseudo-second-order
kinetics
found
be
good
fits
adsorption
data.
Both
adsorbed
spontaneous,
endothermic
process.
A
possible
mechanism
proposed.
effectively
recovered
reused.
Separation and Purification Technology,
Год журнала:
2023,
Номер
330, С. 125266 - 125266
Опубликована: Окт. 4, 2023
The
presence
of
pharmaceutical
wastes
in
the
environment
has
adversely
impacted
marine
biodiversity
due
to
their
hazardous
and
bioaccumulation
nature.
This
research
focussed
on
development
an
effective
phosphorus-doped
3D
graphene
oxide
with
bentonite
carboxymethylcellulose
crosslinking
(PG/BCC)
for
removal
imipramine
wastewater.
impacts
single
factor
(adsorbent
dosage,
initial
concentration,
system
temperature
contact
time)
adsorption
were
examined
by
batch
experiments
while
interactive
multiple
factors
process
optimisation
investigated
central
composite
design
(CCD).
greatest
capacity
evaluated
was
458.95
mg/g
at
following
CCD
optimised
operating
parameters:
10
mg
PG/BCC,
250
ppm
34
min
time
321
K
temperature.
Langmuir
model
described
well
equilibrium
whilst
pseudo-second-order
correlated
closely
kinetic
data.
imipramine-PG/BCC
spontaneous
(-19.235
−27.583
kJ/mol)
endothermic
(1.230
14.562
as
from
thermodynamic
modelling.
Characterisation
PG/BCC
various
microscopy
spectroscopy
analyses
validated
incorporation
adsorbent.
Regeneration
used
proven
be
highly
feasible
methanol
eluent.
Conclusively,
findings
strongly
advocate
a
sustainable
graphene-based
adsorbent
separation
Materials,
Год журнала:
2025,
Номер
18(3), С. 699 - 699
Опубликована: Фев. 5, 2025
As
new
technologies
are
developed,
the
demand
for
rare
earth
elements
(REEs)
has
increased,
despite
limited
awareness
of
their
significant
impact
on
people
and
environment.
In
this
study,
waste
fly
ash
was
used
as
a
precursor
to
synthesize
inorganic
aluminosilicate
polymers
by
adding
an
activator
alumina
silica
compounds
ash.
Due
structure
adsorption
potential,
application
removal
selected
REEs
(Gd3+,
Y3+,
Sc3+)
from
water
been
investigated.
A
decrease
in
intensity
quartz
peak
at
2θ
26.6°
XRD
spectrum
disappearance
albite
mullite
peaks
due
dissolution
during
alkaline
activation
both
modified
samples
were
observed.
The
appearance
29.3°
39.3°
corresponding
calcite
sample
indicates
presence
wood
shifting
band
DRIFT
1030
cm−1
spectra
corresponds
vibrations
Al-O
Si-O
bonds
formation
polymeric
network
(Si-O-Si
or
Si-O-Al).
According
pHPZC
values,
thermodynamic
kinetic
parameters,
chemical
composition,
presumed
mechanism
REE
is
chemisorption
ion
exchange.
highest
efficiencies
(up
95%)
all
examined
single
mixed
solutions
obtained
alkali-activated
mixture
results
research
expanding
knowledge
about
environment,
reduction
modification,
potential
subsequent
use
construction
additives.
