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Caduceus
The manganese
In Korea, KOIST worked to develop the world’s first
Review
nodules in the deep
spectroscopic technology that could effectively lift
Ocean
seabedcomeuptothe
manganese nodules onto ships in 2016. The manganese
ⓒWorld
seathroughtheprocess
nodules collected by the mineral extraction robot
of mining. Mining
“Minaro” from the deep seabed are gathered in an
involvestheprocessof
intermediate storage buffer system installed at a depth
condensation, through
of 500 meters. Then the nodules are pulled up through
which manganese
a pipe-shaped “spectroscopic riser” and are transported
nodules collect on the
to the ship. After that, a series of processes are at work,
seabed, and lifting,
involving separating the nodules from the seawater,
which raises the
discharging the seawater, and obtaining the final metals.
collectednodulesfrom
The metals selected through this process are used to
the seabed to the sea.
make lithium-ion batteries, which are core components
Of course, there are
of smartphones and electric vehicles. As the demand
also spectroscopic
for electric vehicles increases and the price of key
▲Manganese nodules have a unique
stagesthatbreakdown
minerals of lithium batteries soars, the economic value
structure in which the byproducts
of living things such as shark teeth
nodule particles to a
of manganese nodules shines even brighter. The endless
and whale bones form the core and
certain size or sort
potentialofthemanganesenodulesisbringingnewhope
manganeseandironoxidessurround
it.
out sediments before
to Korea, which suffers from 80 percent dependency of
transporting them from a condenser to a spectroscope.
metalimports.
“Acountrynotonlyhassovereigntyoveritsterritoryandterritorialwatersbutalsohasrightstotheplantsand
animals born and raised there,” says Professor Khim. In order to claim ownership of the ecosystem within
a country’s territory, objective research data is needed to prove that “some living or non-living thing ‘exists’
there.” In other words, in order to exercise ecological sovereignty over Dokdo, people must first understand
its ecosystem through academic research. However, unfortunately, the true value of Dokdo, as described by
researchers, is often obscured by the political controversy surrounding it. Public attention is essential for
ecologicalsovereigntytoreachitsfullpotential,asitcanserveasadrivingforceforthedevelopmentofvarious
studiesaimedatdiscoveringfurtherassetsofDokdo.TheArguslooksforwardtothedaywhenDokdocanbe
proudlynamedonthelistofworldnaturalheritagesitesthankstotheworld’sinterestinDokdo’spurevalue.
suyeon309@hufs.ac.kr,hyorin58@hufs.ac.kr
12
www.theargus.org

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