Environmental and Climate Technologies,
Год журнала:
2024,
Номер
28(1)
Опубликована: Янв. 1, 2024
Abstract
In
pursuit
of
the
United
Nations
(UN)
Sustainable
Development
Goals
(SDGs),
nations
are
growing
more
conscious
importance
implementing
SDGs
and
adopting
various
tools
frameworks
to
advance
environmental
human
development.
Current
study
aims
investigate
impacts
airport
ground
operations
through
Life
Cycle
Assessment
(LCA)
was
conducted
on
three
different
Ground
Power
Units
(GPU)
namely,
diesel,
biodiesel,
electric-powered
by
a
system
boundary
cradle-to-gate,
using
SimaPro
version
9.4
software
adopted
CML
Baseline
V3.09
EU25
characterization
model.
Results
show
that
highest
impact
caused
diesel-powered
GPU,
followed
biodiesel-powered
GPU.
At
same
time,
GPU
contributed
lower
in
comparison.
The
Abiotic
Depletion
(AD)
respective
manner
(in
kg
Sb
eq,
0.196,
0.196
0.162),
global
warming
(kg
CO2
eq
1142,
1130
1044),
Ozone
Potential
(ODP)
CFC-11
0.0003,
0.0001
0.0001),
Human
Toxicity
(HTP)
1,4-DB
516.49,
510.96
549.29),
Freshwater
Aquatic
Ecotoxicity
441.56,
463.22
605.91),
Terrestrial
2.74,
2.31
2.35),
Photochemical
Oxidation
C2H4
0.609,
0.70
0.545),
Acidification
SO2
11.01,
11.23
10.11)
Eutrophication
PO4
3.432,
3.459
3.2311).
Batteries,
aluminium,
wheel
rims,
synthetic
rubber
were
main
contributors
these
impacts.
It
concluded
lead-ion
batteries
good
replacement
lithium-ion
due
their
impact.
Similarly,
switching
stationary
GPUs
rather
than
mobile,
can
contribute
lowering
as
rims
mobile
overall
operations.
Environmental Chemistry Letters,
Год журнала:
2024,
Номер
22(3), С. 1005 - 1071
Опубликована: Фев. 13, 2024
Abstract
The
excessive
reliance
on
fossil
fuels
has
resulted
in
an
energy
crisis,
environmental
pollution,
and
health
problems,
calling
for
alternative
such
as
biodiesel.
Here,
we
review
computational
chemistry
machine
learning
optimizing
biodiesel
production
from
waste.
This
article
presents
techniques,
characteristics,
transesterification,
waste
materials,
policies
encouraging
Computational
techniques
are
applied
to
catalyst
design
deactivation,
reaction
reactor
optimization,
stability
assessment,
feedstock
analysis,
process
scale-up,
mechanims,
molecular
dynamics
simulation.
Waste
comprise
cooking
oil,
animal
fat,
vegetable
algae,
fish
waste,
municipal
solid
sewage
sludge.
oil
represents
about
10%
of
global
production,
restaurants
alone
produce
over
1,000,000
m
3
annual.
Microalgae
produces
250
times
more
per
acre
than
soybeans
7–31
palm
oil.
Transesterification
food
lipids
can
with
a
100%
yield.
Sewage
sludge
significant
biomass
that
contribute
renewable
production.
Energy & Fuels,
Год журнала:
2024,
Номер
38(17), С. 16358 - 16370
Опубликована: Авг. 13, 2024
The
growing
demand
for
sustainable
energy
solutions
due
to
escalating
climate
change
challenges
has
spurred
interest
in
the
production
of
hydrogen
from
petroleum
reservoirs.
This
comparative
numerical
study
investigates
optimization
generation
depleted
light
oil
reservoirs
through
double-simultaneous
gas
injection
techniques,
namely,
CH4
+
CO2,
CO2
O2,
and
N2
using
CMG
STARS
thermal
reservoir
simulator.
focuses
on
multilayered
runs
simulations
a
period
15
years
evaluate
long-term
viability.
Furthermore,
it
explores
impact
critical
parameters
strategies
yield.
Findings
reveal
that
is
most
effective
technique,
yielding
significant
cumulative
189,225
kg,
representing
102.26%
increase
base
case.
O2
also
show
substantial
improvements
upon
optimization,
with
increasing
by
33.95
181.80%,
respectively.
Sensitivity
analysis
highlights
influence
porosity,
permeability,
temperature,
pressure,
mole
fraction
Reservoir
porosity
permeability
significantly
affect
efficiency,
particularly
strategy
showing
heightened
sensitivity.
Temperature
proves
crucial
maximizing
reaction
kinetics,
while
adjusting
pressure
further
enhances
production.
underscores
complex
interplay
between
characteristics
situ
generation.
Optimization
efforts
offer
promising
avenues
improving
efficiency
reservoirs,
contributing
solutions.
Greenhouse Gases Science and Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 25, 2025
ABSTRACT
Amino
acids
have
shown
promising
results
for
carbon
dioxide
(CO
2
)
capture
when
functionalised
on
solid
materials;
however,
the
functionalisation
often
relies
commercial
synthetic
amino
acids.
This
study
investigated
optimal
CO
adsorption
performance
of
acid–functionalised
material
synthesised
from
palm
shell–based
activated
and
natural
acids,
specifically
egg
white
(EW)
solution,
in
a
continuous
column.
The
process
conditions
column
were
optimised
using
response
surface
methodology.
Four
parameters,
namely,
gas
flow
rate,
temperature,
concentration
EW
impregnation
identified
as
significantly
affecting
performance.
Good
agreements
obtained
between
predicted
experimental
data,
with
coefficients
determination
ranging
0.9639
to
0.9784.
A
maximum
capacity
1.1793
mmol/g
was
achieved
under
conditions:
rate
200
mL/min,
an
temperature
25°C,
25
vol.%,
15
wt.%.
validation
further
confirmed
reliability
developed
model
equation
predicting
at
fixed
vol.%
concentration,
low
estimation
error.
comparable
waste
this
represent
significant
finding
potential
valorisation,
aligning
Sustainable
Development
Goal
(SDG)
12
United
Nations
Goals,
well
contributing
climate
action
outlined
SDG
13.
With
the
extensive
use
of
fossil
fuels,
global
warming
and
energy
crisis
are
becoming
more
serious.
To
reduce
greenhouse
effect
realize
a
carbon-neutral
cycle,
capture
utilization
CO
2
to
generate
renewable
fuels
promising
approaches.
In
this
chapter,
we
introduce
main
technologies
materials
used
for
capture,
highlight
current
methods
chemically
converting
into
mainly
focusing
on
catalytic
hydrogenation,
photocatalytic
conversion
electrochemical
conversion.
