Beni-Suef University Journal of Basic and Applied Sciences,
Journal Year:
2024,
Volume and Issue:
13(1)
Published: July 2, 2024
Abstract
Background
Presently,
the
proper
disposal
of
E-waste
is
a
major
challenge
for
all
nations.
Portland
cement
and
aggregates
continue
to
play
role
in
construction
industry's
operations.
Meanwhile,
natural
resources
like
gravel
(aggregates)
are
becoming
scarce.
Thus,
now
offering
building
industry
chance
replace
traditional
aggregates.
The
main
goal
current
study
determine
highest
amount
that
may
be
replaced
with
10-mm
coarse
nano-silica
associated
ternary
blend
M-60
grade
high-strength
concrete
while
still
maintaining
designed
concrete's
mechanical,
durability,
microstructural
workability
characteristics.
Results
When
compared
normal
concrete,
15%
replacement
maintained
design-required
compressive,
flexural
tensile
strength
properties.
plastic
component
percentage
considerably
high
(15–30%),
there
significant
decremental
performance
regarding
mechanical
properties
rate
found
range
13–23%.
Even
microstructure
characteristics
validate
concrete.
Nevertheless,
durability
incorporated
were
promising.
Conclusions
overall
outcome
recommends
as
optimal
conventional
it
recommended
adopt
real-time
practices.
Applied Water Science,
Journal Year:
2025,
Volume and Issue:
15(4)
Published: March 13, 2025
Abstract
This
study
explores
the
potential
of
utilizing
weathered
basalt
waste,
discarded
from
stone
quarrying,
as
a
resource
for
producing
efficient
adsorbents
to
remove
Fe
(III)
and
Zn
(II)
aqueous
real
wastewater.
Raw
(RWB),
its
calcined
derivatives
at
750
°C
3
h
(CWB-750)
950
1
with
activated
carbon
impregnation
(CWB/AC-950),
were
prepared
characterized.
Characterization
using
XRD,
FTIR,
SEM,
surface
area
analyzer
revealed
that
calcination
improved
porosity
some
privilege
CWB/AC-950.
CWB/AC-950
remarkable
removal
efficiency
pH
value
5,
achieving
98.30%,
closely
matching
RWB
(98.00%),
outperforming
CWB-750
(96.20%).
In
contrast,
exhibited
highest
capacity
6,
an
55%,
surpassing
both
CWB/AC-950,
which
achieved
approximately
36%.
For
contaminants,
Pseudo-2nd-order
equation
(
R
2
>
0.98)
provided
superior
fit,
showcasing
favorable
sorption
process
by
all
addressed
materials.
The
Fe(III)
data
investigated
materials
better
described
Freundlich
(FL)
model
compared
Langmuir
(LM)
model.
Similarly,
Zn(II)
(CWB-750
CWB/AC-950)
well-explained
FL
These
findings
are
supported
very
high
determination
coefficients
0.96)
significantly
lower
average
relative
error
(ARE)
values
(8.66
13.69)
those
obtained
LM
(55.99
189.25,
orderly).
RWB,
despite
(>
models,
neither
adequately
captured
behavior,
evidenced
exceptionally
ARE
(52.67
161.19
FL,
respectively).
remediation
mechanism
was
not
exclusively
governed
inter-particle
diffusion.
Eventually,
these
highlight
sustainable
repurposing
waste
water
applications.
