Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(23), P. 1910 - 1910
Published: Nov. 28, 2024
Escalating
global
carbon
dioxide
(CO2)
emissions
have
significantly
exacerbated
the
climate
impact,
necessitating
imperative
advancements
in
CO2-capture
technology.
Liquid
absorbents
received
considerable
attention
capture
for
engineering
applications,
due
to
their
high
flexibility,
reliability,
and
recyclability.
Nonetheless,
existing
technologies
of
liquid
CO2
suffer
from
various
issues
that
cannot
be
ignored,
such
as
corrosion,
elevated
costs,
pronounced
secondary
pollution.
More
efforts
are
required
realize
process
optimization
novel
absorbent
innovation.
This
review
presents
nanofluids
other
ionic
liquids,
amino
acids,
phase-change
absorbents.
The
preparation,
mechanisms
action,
influencing
factors
nanofluid
discussed
detail
provide
researchers
with
a
comprehensive
understanding
potential
applications.
Further,
challenges
(including
energy
loss,
environmental
human
health,
barriers
application
performance,
etc.)
encountered
by
these
innovative
techniques
also
commented
on.
facilitates
side-by-side
comparisons
researchers.
The
impact
of
trace
SO2
in
industrial
flue
gas
on
the
amine-based
chemical
absorption
CO2
process
is
a
significant
concern.
This
work
investigates
by
four
representative
amine
absorbents
containing
primary
group
ethanolamine
(MEA),
secondary
2-(ethylamino)ethanol
(EMEA),
tertiary
N,N-diethylethanolamine
(DEEA),
and
sterically
hindered
2-amino-2-methyl-1-propanol
(AMP),
focusing
their
absorption/desorption
capacity,
cyclic
performance,
CO2/SO2
selectivity,
resistance
capability.
Experimental
results
revealed
that
absorbent
MEA
with
has
highest
capability,
while
EMEA
exhibits
lowest.
In
addition,
selectivity
investigations
indicated
superior
for
than
others.
Moreover,
NMR
analysis
more
significantly
inhibited
bicarbonate
formation
compared
to
carbamate
formation,
suggesting
prone
after
have
greater
resistant
Altogether,
this
provides
valuable
insight
into
utilization
capture
presence
SO2.
