Case Studies in Chemical and Environmental Engineering,
Journal Year:
2024,
Volume and Issue:
10, P. 100908 - 100908
Published: Aug. 23, 2024
Wastewater
from
the
biodiesel
process
contains
oil
and
methanol,
requiring
treatment
to
reduce
chemical
oxygen
demand
(COD)
biological
(BOD5).
Chemical
separation
can
generate
additional
waste,
so
innovative
methods
like
gravity
separators
are
essential.
This
research
uses
an
inlet
diverter
collector
at
distillation
column
bottom
treat
wastewater
effectively.
The
results
show
COD
BOD5
values
of
210
mg/L
80
mg/L,
respectively,
with
percentage
removal
was
±70
%
±60
%,
96.2
recovery.
Gas
chromatography
(GC)
analysis
found
2.6
methanol
minimal
impurities.
method
effectively
separates
water-methanol-oil
mixtures,
making
it
suitable
for
plants.
ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(8)
Published: Feb. 1, 2025
Abstract
Catalytic
pyrolysis
is
identified
as
a
superior
method
for
the
disposal
of
waste
plastics
providing
enhanced
efficiency
and
environmental
advantages
compared
to
conventional
techniques.
However,
high
cost
catalytic
process
limits
enhancement
economic
benefits.
This
study
investigates
utilization
cost‐effective
spent
catalysts
specifically
Y
zeolite,
ZSM‐5
silica
powder
within
fixed‐bed/fluidized‐bed
combination
reactor
setup
optimize
conversion
into
valuable
products.
The
results
show
that
remarkable
selectivity
zeolite
gasoline
production
achieving
yield
52%
with
its
pore
characteristics
inclined
towards
generation
moderate
acidity
sites
being
distinctive
features.
By
implementing
thermal
driving
strategy
research
further
increases
C
4
fraction
by
1.5
times
significantly
enhances
olefin
isomerization
representing
crucial
advancements
improve
both
quantity
quality
potential
gasoline.
These
findings
provide
essential
insights
support
effective
reuse
in
underscoring
sustainable
management
resource
recovery.
Green Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Emerging
technologies-empowered
thermochemical
plastic
valorization
is
developed
for
value-added
products
in
green
and
practical
manner,
which
are
beneficial
to
achieving
circular
economy
several
UN
sustainable
development
goals.
