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Prometheus
WhatisDAC?
Direct Air Capture (DAC) is a technology by means of which large amounts of carbon dioxide
can be effectively captured where it is generated in places with high waste emissions such
as cement plants and biomass power plants. The concept of carbon capture first emerged in
academia in 1999when Klaus Lackner, a chemical engineer at Arizona State University in the
U.S., suggested that direct collection of carbon dioxide from the air would be most effective to
solve climate change. After that, in 2017, Swiss climate tech startup, Climeworks, succeeded in
developingindustrialDACdevicesforthefirsttime.Sincethen,DAChasbeenactivelyresearched
and invested in by various research institutes and companies. Maersk, the world’s No. 1 shipping
company based in Denmark, has invested in Prometheus Fuels, an eco-friendly energy startup
thatusestheDACtechnologytoproduceE-Fuel,acarbon-neutralfuel.
because
News
external
DAC:TheRisingStarofCarbonNeutrality
ⓒYonhap
energy is
required
HowtheDACTechnologyContributestoCarbon
during this
Neutrality
Although DAC is still in its early stages of introduction
c a r b o n
worldwide, it is drawing attention as a promising
d i ox i d e
technologytoachievecarbonneutralityby2050,thegoal
desorption
of the Paris Agreement.* DAC is a chemical approach
process.
▲DACcapturescarbondioxidefromtheair.
amongcarbondioxideremovalapproaches.Tounderstand
Removing
DAC,youfirstneedtoknowwhatcarbondioxideremoval
carbon and absorbent requires heating or pressure, and
is. The carbon dioxide removal approach is a method
electrical energy is required for this. To this end, when
whereby greenhouse gases are directly removed from
a thermal power plant produces electrical energy, an
the atmosphere and stored in land, underground, marine
environmental problem arises in which more carbon is
storage, or products. Therefore, DAC is a method of
generated. However, this energy can be replaced with
directly removing, storing, or utilizing carbon dioxide
natural energy such as solar and wind power, drawing
in the atmosphere through a chemical reaction with an
attention and investment from academia as a potential
absorbent. The key to the DAC process is absorption.
carbon dioxide removal technology. In this respect, DAC
Absorbers are substances that combine chemically
develops organically with the research of other eco-
or physically with carbon dioxide to capture it in the
friendlyenergytechnologies.
air. In general, the combination reaction between the
absorbent and carbon dioxide occurs spontaneously as
*Paris Agreement: According to the Hankyung Economic Terminology
Dictionary, this agreement was adopted by 195 parties at the 21st session
an exothermic reaction. After that, the absorbed carbon
of the Conference of the Parties (COP21) in Paris on December 12, 2015.
The agreement was signed under the leadership of the 44th U.S. President
dioxide must be separated from the absorbent, and the
BarackObama.Itcontainsastep-by-stepreductionplaningreenhousegas
reactionoccursonlywhenheatorotherenergyisapplied
emissionstopreventtheglobalaveragetemperaturefromrisingmorethan2
Celsiuscomparedtothepre-industriallevel.
as an endothermic reaction. This is called desorption.
In other words, DAC absorbs carbon dioxide in the air
WhyDACischallenging
Why is DAC attracting attention despite other existing
through combing with an absorbent, applies other energy
carbon removal technologies? According to Park Ho-
to extract carbon dioxide from the absorbent, and then
beom, a professor of energy engineering at Hanyang
storesorutilizesit.
University, existing carbon removal technology could
However, cost and environmental problems may arise
20
www.theargus.org
WhatisDAC?
Direct Air Capture (DAC) is a technology by means of which large amounts of carbon dioxide
can be effectively captured where it is generated in places with high waste emissions such
as cement plants and biomass power plants. The concept of carbon capture first emerged in
academia in 1999when Klaus Lackner, a chemical engineer at Arizona State University in the
U.S., suggested that direct collection of carbon dioxide from the air would be most effective to
solve climate change. After that, in 2017, Swiss climate tech startup, Climeworks, succeeded in
developingindustrialDACdevicesforthefirsttime.Sincethen,DAChasbeenactivelyresearched
and invested in by various research institutes and companies. Maersk, the world’s No. 1 shipping
company based in Denmark, has invested in Prometheus Fuels, an eco-friendly energy startup
thatusestheDACtechnologytoproduceE-Fuel,acarbon-neutralfuel.
because
News
external
DAC:TheRisingStarofCarbonNeutrality
ⓒYonhap
energy is
required
HowtheDACTechnologyContributestoCarbon
during this
Neutrality
Although DAC is still in its early stages of introduction
c a r b o n
worldwide, it is drawing attention as a promising
d i ox i d e
technologytoachievecarbonneutralityby2050,thegoal
desorption
of the Paris Agreement.* DAC is a chemical approach
process.
▲DACcapturescarbondioxidefromtheair.
amongcarbondioxideremovalapproaches.Tounderstand
Removing
DAC,youfirstneedtoknowwhatcarbondioxideremoval
carbon and absorbent requires heating or pressure, and
is. The carbon dioxide removal approach is a method
electrical energy is required for this. To this end, when
whereby greenhouse gases are directly removed from
a thermal power plant produces electrical energy, an
the atmosphere and stored in land, underground, marine
environmental problem arises in which more carbon is
storage, or products. Therefore, DAC is a method of
generated. However, this energy can be replaced with
directly removing, storing, or utilizing carbon dioxide
natural energy such as solar and wind power, drawing
in the atmosphere through a chemical reaction with an
attention and investment from academia as a potential
absorbent. The key to the DAC process is absorption.
carbon dioxide removal technology. In this respect, DAC
Absorbers are substances that combine chemically
develops organically with the research of other eco-
or physically with carbon dioxide to capture it in the
friendlyenergytechnologies.
air. In general, the combination reaction between the
absorbent and carbon dioxide occurs spontaneously as
*Paris Agreement: According to the Hankyung Economic Terminology
Dictionary, this agreement was adopted by 195 parties at the 21st session
an exothermic reaction. After that, the absorbed carbon
of the Conference of the Parties (COP21) in Paris on December 12, 2015.
The agreement was signed under the leadership of the 44th U.S. President
dioxide must be separated from the absorbent, and the
BarackObama.Itcontainsastep-by-stepreductionplaningreenhousegas
reactionoccursonlywhenheatorotherenergyisapplied
emissionstopreventtheglobalaveragetemperaturefromrisingmorethan2
Celsiuscomparedtothepre-industriallevel.
as an endothermic reaction. This is called desorption.
In other words, DAC absorbs carbon dioxide in the air
WhyDACischallenging
Why is DAC attracting attention despite other existing
through combing with an absorbent, applies other energy
carbon removal technologies? According to Park Ho-
to extract carbon dioxide from the absorbent, and then
beom, a professor of energy engineering at Hanyang
storesorutilizesit.
University, existing carbon removal technology could
However, cost and environmental problems may arise
20
www.theargus.org
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