Ka ikehu hou o ka wā e hiki mai ana: Ka wai kai

ʻAʻohe mea kānalua no ia mea, he mea maoli ka hoʻomehana honua, a ke ulu nei ka pilikia. ʻOiai ke koho nei kekahi e haʻalele i nā hōʻailona a me ka ʻike i hāʻawi ʻia iā lākou, ke nānā nei kekahi i ka neʻe ʻana i ka ikehu hou a maʻemaʻe. Ua loaʻa i kekahi mau mea noiʻi ma ke Kulanui o Osaka Loaʻa he ala e hana ai i ka ikehu hou e hoʻohana ai i kekahi o nā kumuwaiwai nui loa ma ka honua, ʻo ke kai.

OLELO OLELO:

ʻO ka ikehu lā kahi kumu nui o ka ikehu hou. Eia naʻe, pehea e hiki ai iā mākou ke hoʻohana i ka ikehu lā ke hūnā ka lā? ʻO kekahi pane ʻo ia ka hoʻohuli ʻana i ka ikehu lā i ikehu kemika hiki ke hoʻohana ʻia i wahie. Ma ka hana ʻana i kēia hoʻololi, hiki ke mālama ʻia a hoʻoneʻe ʻia. ʻO ka hydrogen (H2) kahi moho hiki ke hoʻololi. Hiki ke hana ʻia ma ka hoʻokaʻawale ʻana i nā molekele wai (H2O) me ka hoʻohana ʻana i kahi kaʻina i kapa ʻia ʻo "photocatalysis". ʻO ka Photocatalysis ka manawa e hāʻawi ai ka lā i ka ikehu i kekahi mea ʻē aʻe a laila hana ma ke ʻano he "catalyst". Hoʻonui ka catalyst i ka wikiwiki o ka hopena kemika. Hana ʻia ka photocatalysis a puni mākou, pā ka lā i ka chlorophyll o kahi mea kanu (he catalyst) i loko o kā lākou mau mea kanu, e hiki ai iā lākou ke hana i ka oxygen, a me ka glucose kahi kumu o ka ikehu!

Eia naʻe, e like me ua kākau nā mea noiʻi i loko o kā lākou pepa, "ʻo ka haʻahaʻa haʻahaʻa o ka hoʻololi ʻana i ka ikehu o ka lā o ka hana H2 a me ka pilikia mālama ʻana o ke kinoea H2 ua pale ka hoʻohana pono ʻana o H2 ma ke ʻano he wahie lā."

KA PALAPALA:

E hoʻokomo i ka hydrogen peroxide (H2O2). E like me ʻAmelika Hui Pū ʻIa Kūʻokoʻa memo, "Hydrogen peroxide, ke hoʻohanaʻia e hana i ka ikehu, hana wale i ka wai maʻemaʻe a me ka oxygen ma keʻano he huahana, no laila ua manaʻoʻia he ikehu maʻemaʻe e like me ka hydrogen. Eia nō naʻe, ʻaʻole like me ka hydrogen, H2O2  [hydrogen peroxide] aia ma ke ʻano wai ma ka lumi wela, no laila hiki ke mālama a lawe ʻia. ʻO ka pilikia, ʻo ke ala mua e hana ai i ka hydrogen peroxide i hoʻohana i ka photocatalysis ma ka wai maʻemaʻe. ʻO ka wai maʻemaʻe e like me ka maʻemaʻe. Me ka nui o ka wai maʻemaʻe i hoʻohana ʻia i ke kaʻina hana, ʻaʻole ia he ala hiki ke hana i ka ikehu hoʻomau.

Eia kahi e komo ai ka wai kai. Ma muli o ke ʻano o ka wai kai, ua hoʻohana nā mea noiʻi i ka photocatalysis. ʻO ka hopena, ʻo ia ka nui o ka hydrogen peroxide i lawa ka kiʻekiʻe e holo ai i kahi pahu wahie hydrogen peroxide (e like me kahi pahu pahu wahie, ʻo ia wale nō ka mea e pono ai ke kahe mau o ka wahie e holo ai.)

ʻO ke ʻano o ka hana ʻana i ka hydrogen peroxide no ka wahie he papahana ulu me kahi lumi e ulu ai. Aia nō ka nīnau o ke kumu kūʻai-efficiency, a me ka hoʻohana 'ana ia mea ma luna o ka nui-unahiʻole, ma mua o ka wahie wale. ʻO kekahi o nā mea noiʻi i komo, ʻo Shunichi Fukuzumi, i ʻike ʻia ma kahi Haawina "I ka wā e hiki mai ana, hoʻolālā mākou e hana i ka hoʻomohala ʻana i kahi hana no ka hana haʻahaʻa haʻahaʻa a nui o ka H2O2 mai ka wai kai," wahi a Fukuzumi, "Hiki paha ke pani i ka hana kumu kūʻai nui o H2O2 mai H2 mai ke kinoea maoli) a me O2.