Science & Technology Indonesia,
Journal Year:
2023,
Volume and Issue:
8(4), P. 666 - 674
Published: Oct. 1, 2023
Sengon
wood
sawdust
(SWS)
is
a
solid
waste
of
the
industry
with
potential
as
source
cellulose
and
can
increase
its
economic
value.
However,
in
plants
tightly
bound
to
lignin
which
called
lignocellulose
therefore
needs
be
delignified
before
utilization.
In
this
study,
we
determined
optimum
conditions
for
delignification
from
sengon
(SWSC).
Optimization
variables
were
parameter
obtained
hemicellulose,
cellulose,
content.
The
optimization
SWSC
was
then
carried
out
using
factorial
design
by
analyzing
effect
sodium
hydroxide
(NaOH)
concentration
(2%
-
10%)
ratio
(SWS
:
NaOH
solution)
(1:10
–
1:80)
on
Optimal
at
2%
(1:19.20)
concentrations
8.01%
52.49%
22.2%
lignin.
One
sample
T-test
analysis
predictive
research
values
showed
insignificant
results
(P>0.05)
means
that
equation
proved
valid
determine
sawdust.
FT-IR
analysis,
SEM
imaging,
particle
size
distribution
(PSA
profile)
produced
under
these
has
similar
characteristics
standard
Avicel®
PH
102.
Chemistry - An Asian Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 27, 2024
Abstract
The
reuse
of
waste
biomass
resources
had
become
a
hot
topic
in
the
sustainable
development
human
society.
Biomass
was
an
ideal
precursor
for
preparing
porous
carbon.
However,
due
to
complexity
composition
and
microstructure,
quality
reproducibility
carbon
poor.
Therefore,
it
great
significance
develop
reliable
method
from
biomass.
In
this
paper,
activated
hydrothermal
prepared
by
combination
carbonization
treatment
KHCO
3
mild
activation.
could
complete
morphology
adjustment
iron
doping
one
step,
activation
activate
while
maintaining
spherical
morphology.
Fe‐modified
with
ball/nanosheet
structure
bagasse
exhibited
high
surface
area
(2169.8
m
2
/g),
which
facilitated
ion/electrolyte
diffusion
increased
accessibility
between
electrolyte
ions.
derived
good
specific
capacitance
(315.2
F/g
at
1
A/g)
cycle
stability,
loss
only
5.8
%
after
5000
charge‐discharge
cycles,
Na
SO
4
‐based
device
showed
maximum
energy
density
13.02
Wh/kg.
This
study
that
provided
effective
way
conversion
into
high‐performance
electrode
materials.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(21), P. 9204 - 9204
Published: Oct. 23, 2024
Novel
sorbents
were
produced
using
sustainable
and
eco-friendly
methods,
aimed
at
minimizing
environmental
impact
while
utilizing
industrial
by-products
natural
minerals.
Olive
stones
molasses
derived
from
olive
mill
sugar
industries,
respectively,
an
abundant,
low-cost
mineral,
clinoptilolite,
combined
in
the
following
proportions:
80/20
clinoptilolite/stone,
80/10/10
clinoptilolite/stone/molasses,
50/50
stone/molasses,
w/w.
Then,
physical
carbonization
(CL80OL20C,
CL80OL10M10C,
OL50M50C)
or
chemical
activation
(CL80OL20A,
CL80OL10M10A,
OL50M50A)
took
place.
The
adsorbents
characterized
through
Raman,
FT-IR,
BET
SEM-EDS
analysis.
CL80OL20A
material
presents
highest
ratio
of
C/O
EDS
analysis
lowest
ID/IG
Raman
spectroscopy.
increase
specific
surface
area
is
as
follows:
OL50M50C
<
OL50M50A
CL80OL10M10C
CL80OL20C
CL80OL10M10A.
Three
applications
conducted:
two
with
dyes
(methylene
blue
methyl
red)
aqueous
means
one
wastewaters
for
removal
total
phenols
their
addition
to
rice,
increasing
phenolic
content
producing
novel
foods.
well-fitted
application
pseudo-second
order
kinetic
model
experimental
data
has
shown
that
chemisorption
prevailing
mechanism.
adsorbed
amount
recovered
rice
ranges
0.14
0.93
mg/g.
Consequently,
can
be
used
filters
either
adsorb
dangerous
organic
compounds
recover
bioactive
wastewater,
preventing
disposal
environment,
which
could
otherwise
lead
severe
negative
effects
on
ecosystems.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(23), P. 10305 - 10305
Published: Nov. 25, 2024
Every
year,
large
amounts
of
shrimp
waste
are
disposed
in
the
environment,
causing
serious
environmental
problems.
The
prospect
recycling
helps
to
reduce
and
protect
environment.
In
this
study,
three
different
species
were
used,
including
Pleoticus
muellieri,
Litopeneus
vanamei,
Parapenaeus
longirostris,
separated
into
shells
(PLMUS,
LIVAS,
PALOS)
tails
(PLMUT,
LIVAT,
PALOT),
transformed
novel
carbonaceous
materials.
Their
adsorption
properties
investigated
using
chemical
compounds
(MB,
MR,
phenol,
astaxanthin)
aqueous
means.
materials
characterized
through
FTIR,
BET,
SEM–EDS
analyses.
According
results,
adsorbents
presented
high
percentage
MB
astaxanthin
(>90%),
low
phenol
owing
bonds
that
formed
between
functional
groups
organic
substances
corresponding
on
surface
results
FTIR
analysis
show
presence
C=C
from
aromatic
rings
adsorbed
MR
at
1636
cm−1,
O-H
phenols
3330
or
C=O
1730
cm−1
after
astaxanthin.
BET
analysis,
increase
specific
area
follows
order:
LIVAS
>
PLMUS
PALOT
PALOS
PLMUT
LIVAT.
compact
structures
with
main
elements
C
(37–56%),
O
(25–35%),
Ca
(12–23%)
for
all
Kinetic
showed
experimental
data
can
be
best
described
by
pseudo-second
order
model,
indicating
chemisorption
is
prevailing
mechanism.
Consequently,
such
methods
promote
sustainable
management
zero-waste
fish
farming
practices,
fostering
production
high-added
value
not
only
decontamination
purposes
but
also
isolation
bioactive
substances.
