Indonesian Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
24(6), P. 1650 - 1650
Published: Dec. 1, 2024
The
CO2
mineralization
pathway
is
considered
a
promising
option
for
carbon
capture
usage
and
storage
because
the
captured
can
be
permanently
stored,
secondly
industrial
waste
(i.e.,
petrochemical
refinery,
lime,
cement
kiln
dust)
recycled
into
value-added
carbonate
materials
by
controlling
crystal
polymorphs
properties
of
mineral
carbonate.
This
study
investigated
utilized
synthesis
precipitated
calcium
(PCC)
via
low
temperatures
at
30
°C
55
with
addition
50
75
g/L
ammonium
chloride
(NH4Cl).
pilot
scale
PCC
production
was
established
to
simultaneously
produce
energy
demand
reporting
feasibility
economic
analysis
develop
carbonation
that
transform
limestones
CO2,
which
from
refinery
process
economically
valuable
PCC.
It
found
aragonite
phase
generated
room
temperature
adjusting
flow
rate.
In
addition,
use
NH4Cl,
transformed
((NH4)2CO3)
during
calcination
process,
maintain
stable
varying
NH4Cl
concentration.
ACS Agricultural Science & Technology,
Journal Year:
2023,
Volume and Issue:
3(12), P. 1154 - 1168
Published: Dec. 7, 2023
The
high
polysaccharide
content
of
Ravenna
grass
(Saccharum
ravennae)
made
it
a
viable
choice
for
the
generation
biofuel.
However,
sugar
conversion
must
be
optimized
its
economic
sustainability.
pretreatment
biomass
(RGB)
was
performed
with
2%
H2SO4(AC),
NaOH
(AL),
and
subsequent
H2SO4–NaOH
(AC–AL)
hydrothermal
methods.
Enzymatic
hydrolysis
all
pretreated
samples,
along
raw
biomass,
conducted
using
cellulase
from
Trichoderma
reesei
without
ionic
(SDS,
CTAB)
nonionic
(Tween
20)
surfactants
(10
mg/mL).
AC–AL-treated
RGB
hydrolyzed
use
surfactants,
yielding
maximum
yield
624
mg/g.
Regardless
techniques
used,
adding
sodium
dodecyl
sulfate
(SDS)
to
enzymatic
significantly
decreased
yield.
inclusion
cetyltrimethylammonium
bromide
(CTAB)
in
hydrolysate
also
reduced
but
only
marginally.
Tween
20
restricts
enzyme
adsorption
lignin
fractions,
increasing
total
production
samples.
cellulose
xylan
digestibility
AL-treated
improved
by
16.72
34.33%,
respectively.
A
816
mg/g
obtained
20.
addition
produced
0.249
0.318
g
ethanol
per
1
AL-
Saccharomyces
cerevisiae
as
fermenting
organism,
enhanced
usability
second-generation
biofuel
substrate
commercial
uses
can
an
alternative
cane
bagasse.
