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Prometheus
which captures and utilizes carbon dioxide. Simply
ⓒIDtechEX
put, it is a technology that collects, stores, and utilizes
carbondioxideemittedintotheatmosphere.IntheCCUS
process, carbon is recycled through various conversions
suchaschemicalconversionandmineralization.Itisalso
usedasarawmaterialforeco-friendlybuildingmaterials
by converting carbon into calcium carbonate using
▲Capturedaircanbeutilizedorstored.
mineralizationtechnology.Theremainingcarbondioxide
only capture carbon in closed air with concentrations
can be safely stored underground or under the sea to
of 10 to 15 percent, emitted from emission sources such
prevent it from being released back into the atmosphere.
as factories and thermal power plants. However, DAC
It can be safely stored by collecting undersea natural gas
can capture carbon even in an open atmosphere with a
andstoringliquefiedorsolidifiedcarbonintheremaining
relatively low carbon concentration of 0.04 percent. In
space. Therefore, DAC has the advantage of not only
other words, while existing carbon capture technology
capturingcarbon,butalsoofstoringandutilizingitwhen
has a geographical limitation requiring installation only
combinedwithCCUS.
in places with high carbon concentrations, DAC can be
installed anywhere carbon exists regardless of carbon
concentration. In addition, existing ecological carbon
WhatarethemethodsoftheDACtechnologyand
removal methods have been greatly limited in removing
theprinciplesofeachmethod?
existingamountsofcarbon.AccordingtoProfessorPark,
in the ecological cycle, humans and animals emit carbon
Liquid
through exhalation and flatulence; and trees and oceans
absorb it to maintain an appropriate ratio of carbon
Credits
and oxygen in the air. However, at present, humans are
ⓒCarbon
emittingexcessivecarbonartificiallytoalevelthatforests
and oceans cannot handle. There is a great significance
and difference in that DAC overcomes the limitations of
these ecological carbon removal methods. In addition,
existing ecological carbon removal methods such as
afforestation and reforestation, which create forests by
artificialmethodsofplantingtreesorsowingseeds,create
▲The core principle of the liquid method is to utilize the characteristic
the risk of carbon dioxide leakage; but DAC has a low
ofcarbondioxide.
risk of carbon dioxide leakage. This is because carbon
The method of collecting carbon with DAC is divided
collectedbyDACisstoredinliquidormineralform.On
into liquid, solid, and membrane methods according to
the other hand, the ecological carbon removal method
the characteristics of the absorbent. First, the liquid is
can be said to have a risk of carbon emissions due to
also called the mono ethanol amine* method. According
environmentalfactorssuchasfire.
to Oh Chae-woon, a principal researcher at the National
What happens to the carbon that is gathered through
InstituteofGreenTechnology,thecoreprincipleofliquid
DAC? It is difficult to calculate the economic value with
methodistoutilizethecharacteristicofcarbondioxide;it
existing technologies, but DAC is not just stored, so new
becomesacidicwhenitdissolves.First,whenanabsorbent
economicproductscanbecreated.ItisCCUSthatmakes
made of a chemical such as an amine is dissolved in
this possible. CCUS is a technology closely related to
water, the water becomes basic. When air containing
DAC. CCUS stands for combination of two technologies:
carbondioxideisinjectedintothisbasicaqueoussolution,
CarbonCaptureStorage(CCS),whichcapturesandstores
carbondioxide(acidic)andabsorbent(alkalinity,basicity)
carbon dioxide; and Carbon Capture Utilization (CCU),
react in neutralization,* resulting in adsorption. At this
21
MAY 2023
which captures and utilizes carbon dioxide. Simply
ⓒIDtechEX
put, it is a technology that collects, stores, and utilizes
carbondioxideemittedintotheatmosphere.IntheCCUS
process, carbon is recycled through various conversions
suchaschemicalconversionandmineralization.Itisalso
usedasarawmaterialforeco-friendlybuildingmaterials
by converting carbon into calcium carbonate using
▲Capturedaircanbeutilizedorstored.
mineralizationtechnology.Theremainingcarbondioxide
only capture carbon in closed air with concentrations
can be safely stored underground or under the sea to
of 10 to 15 percent, emitted from emission sources such
prevent it from being released back into the atmosphere.
as factories and thermal power plants. However, DAC
It can be safely stored by collecting undersea natural gas
can capture carbon even in an open atmosphere with a
andstoringliquefiedorsolidifiedcarbonintheremaining
relatively low carbon concentration of 0.04 percent. In
space. Therefore, DAC has the advantage of not only
other words, while existing carbon capture technology
capturingcarbon,butalsoofstoringandutilizingitwhen
has a geographical limitation requiring installation only
combinedwithCCUS.
in places with high carbon concentrations, DAC can be
installed anywhere carbon exists regardless of carbon
concentration. In addition, existing ecological carbon
WhatarethemethodsoftheDACtechnologyand
removal methods have been greatly limited in removing
theprinciplesofeachmethod?
existingamountsofcarbon.AccordingtoProfessorPark,
in the ecological cycle, humans and animals emit carbon
Liquid
through exhalation and flatulence; and trees and oceans
absorb it to maintain an appropriate ratio of carbon
Credits
and oxygen in the air. However, at present, humans are
ⓒCarbon
emittingexcessivecarbonartificiallytoalevelthatforests
and oceans cannot handle. There is a great significance
and difference in that DAC overcomes the limitations of
these ecological carbon removal methods. In addition,
existing ecological carbon removal methods such as
afforestation and reforestation, which create forests by
artificialmethodsofplantingtreesorsowingseeds,create
▲The core principle of the liquid method is to utilize the characteristic
the risk of carbon dioxide leakage; but DAC has a low
ofcarbondioxide.
risk of carbon dioxide leakage. This is because carbon
The method of collecting carbon with DAC is divided
collectedbyDACisstoredinliquidormineralform.On
into liquid, solid, and membrane methods according to
the other hand, the ecological carbon removal method
the characteristics of the absorbent. First, the liquid is
can be said to have a risk of carbon emissions due to
also called the mono ethanol amine* method. According
environmentalfactorssuchasfire.
to Oh Chae-woon, a principal researcher at the National
What happens to the carbon that is gathered through
InstituteofGreenTechnology,thecoreprincipleofliquid
DAC? It is difficult to calculate the economic value with
methodistoutilizethecharacteristicofcarbondioxide;it
existing technologies, but DAC is not just stored, so new
becomesacidicwhenitdissolves.First,whenanabsorbent
economicproductscanbecreated.ItisCCUSthatmakes
made of a chemical such as an amine is dissolved in
this possible. CCUS is a technology closely related to
water, the water becomes basic. When air containing
DAC. CCUS stands for combination of two technologies:
carbondioxideisinjectedintothisbasicaqueoussolution,
CarbonCaptureStorage(CCS),whichcapturesandstores
carbondioxide(acidic)andabsorbent(alkalinity,basicity)
carbon dioxide; and Carbon Capture Utilization (CCU),
react in neutralization,* resulting in adsorption. At this
21
MAY 2023
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