Eli nqaku liphononongwe ngokweenkqubo kunye nemigaqo-nkqubo yokuhlela yeSayensi X. Abahleli bagxininise ezi mpawu zilandelayo ngelixa beqinisekisa ukuthembeka komxholo:
Utshintsho lwemozulu yingxaki enkulu efuna ukujongwa kuqala kwihlabathi liphela. Amazwe kwihlabathi liphela aphuhlisa imigaqo-nkqubo yokunciphisa imiphumo yokufudumala kwehlabathi kunye notshintsho lwemozulu. Umzekelo, iManyano yaseYurophu icebisa iseti epheleleyo yezikhokelo zokufezekisa ukungathathi cala kwemozulu ngo-2050. Ngokufanayo, iSivumelwano seGreen saseYurophu sibeka phambili ukunciphisa ukukhutshwa kwegesi ezibangela ukufudumala komhlaba.
Ukubamba ikharbon diokside (CO2) ekhutshwayo kunye nokuyiguqula ngeekhemikhali ibe ziimveliso zorhwebo eziluncedo yindlela enye yokunciphisa ukufudumala kwehlabathi kunye nokunciphisa imiphumo yako. Oososayensi okwangoku bahlola iteknoloji yokubamba nokusebenzisa ikharbon (CCU) njengendlela ethembisayo yokwandisa ukugcinwa kunye nokucutshungulwa kwekharbon diokside ngexabiso eliphantsi.
Nangona kunjalo, uphando lwe-CCU lwehlabathi lukhawulelwe kakhulu kwiikhompawundi eziguqulayo ezingama-20. Ngenxa yokwahluka kwemithombo yokukhupha i-CO2, ukufumaneka koluhlu olubanzi lweekhompawundi kubalulekile, nto leyo eya kufuna uphando olunzulu kwiinkqubo ezinokuguqula i-CO2 nokuba kumanqanaba aphantsi.
Iqela labaphandi abavela kwiYunivesithi yaseChung-Ang yaseKorea lenza uphando kwiinkqubo zeCCU ezisebenzisa inkunkuma okanye izixhobo zemvelo ezityebileyo njengezinto ezisetyenziswayo ukuqinisekisa ukuba ziyasebenza ngokwezoqoqosho.
Iqela lophando elikhokelwa nguNjingalwazi Sungho Yoon kunye noNjingalwazi oNcedisayo uChul-Jin Lee kutshanje lipapashe uphando oluxoxa ngokusetyenziswa kwe-carbon dioxide yemizi-mveliso kunye ne-dolomite, ilitye eliqhelekileyo neliqhelekileyo le-sedimentary elityebileyo kwi-calcium kunye ne-magnesium, ukuvelisa iimveliso ezimbini ezinokubakho zorhwebo: i-calcium formate. kunye ne-magnesium oxide.
“Kukho umdla okhulayo wokusebenzisa i-carbon dioxide ukuvelisa iimveliso ezixabisekileyo ezinokunceda ukunciphisa imiphumo yotshintsho lwemozulu ngelixa zivelisa iingenelo zoqoqosho. Ngokudibanisa ii-hydrogenation reactions ze-carbon dioxide kunye nee-cation exchange reactions, siye saphuhlisa indlela yokucocwa ngaxeshanye kwee-metal oxides kunye neenkqubo zokuvelisa iifomathi ezixabisekileyo,” utshilo uNjingalwazi Yin.
Kolu phando lwabo, izazinzulu zisebenzise i-catalyst (Ru/bpyTN-30-CTF) ukongeza i-hydrogen kwi-carbon dioxide, nto leyo ebangele ukuba kubekho iimveliso ezimbini ezongeziweyo: i-calcium formate kunye ne-magnesium oxide. I-calcium formate, isongezo sesamente, i-deicer, kunye nesongezo sokondla izilwanyana, ikwasetyenziswa ekuthambiseni isikhumba.
Ngokwahlukileyo koko, i-magnesium oxide isetyenziswa kakhulu kumashishini okwakha namayeza. Le nkqubo ayisebenzi nje kuphela, kodwa ikhawuleza kakhulu, ivelisa imveliso ngemizuzu emi-5 kuphela kubushushu begumbi. Ukongeza, abaphandi baqikelela ukuba le nkqubo inokunciphisa amandla okufudumala kwehlabathi ngama-20% xa kuthelekiswa neendlela zemveli zokuvelisa i-calcium formate.
Iqela likwavavanya ukuba indlela yabo ingathatha indawo yeendlela zemveliso ezikhoyo ngokufunda impembelelo yayo kwindalo esingqongileyo kunye nokuphila kakuhle kwezoqoqosho. “Ngokusekelwe kwiziphumo, singatsho ukuba indlela yethu yindlela enobuhlobo nokusingqongileyo endaweni yokuguqula i-carbon dioxide enokuthatha indawo yeendlela zemveli kwaye incede ekunciphiseni ukukhutshwa kwe-carbon dioxide kwimizi-mveliso,” ucacise watsho uNjingalwazi uYin.
Nangona ukuguqula ikharbon diokside ibe ziimveliso eziluncedo kuvakala kuthembisa, ezi nkqubo azisoloko zilula ukuzikhulisa. Uninzi lwetekhnoloji ye-CCU alukathengiswa kuba ukusebenza kwazo kwezoqoqosho kuphantsi xa kuthelekiswa neenkqubo zorhwebo eziqhelekileyo. “Kufuneka sidibanise inkqubo ye-CCU kunye nokurisayikilisha inkunkuma ukuze ikwazi ukusebenza kwindalo esingqongileyo nakwezoqoqosho. Oku kunokunceda ekufezekiseni iinjongo zokukhupha ukungcola kwikamva,” uGqr. Lee ugqibezele.
Ulwazi oluthe kratya: Hayoung Yoon et al., Ukuguqula iMagnesium kunye neCalcium Ion Dynamics kwiDolomite zibe ziimveliso eziluncedo ezongeziweyo kusetyenziswa i-CO2, iJournal of Chemical Engineering (2023). DOI: 10.1016/j.cej.2023.143684
Ukuba udibana nengxaki yokubhala, ukungachaneki, okanye ungathanda ukufaka isicelo sokuhlela umxholo kweli phepha, nceda usebenzise le fomu. Kwimibuzo ngokubanzi, nceda sebenzisa ifomu yethu yoqhagamshelwano. Ukuze ufumane ingxelo ngokubanzi, sebenzisa icandelo lezimvo zoluntu elingezantsi (landela izikhokelo).
Uluvo lwakho lubalulekile kuthi. Nangona kunjalo, ngenxa yobuninzi bemiyalezo, asinakuqinisekisa impendulo eyenzelwe wena.
Idilesi yakho ye-imeyile isetyenziselwa kuphela ukuxelela abamkeli ukuba ngubani othumele i-imeyile. Idilesi yakho okanye idilesi yommkeli ayizukusetyenziselwa nayiphi na enye injongo. Ulwazi olufakileyo luya kuvela kwi-imeyile yakho kwaye aluyi kugcinwa yiPhys.org nangayiphi na indlela.
Fumana uhlaziyo lweveki nganye kunye/okanye lwemihla ngemihla kwibhokisi yakho yemiyalezo engenayo. Ungazikhupha nanini na kwaye asisayi kwabelana ngeenkcukacha zakho nabantu besithathu.
Senza umxholo wethu ufikeleleke kuye wonke umntu. Cinga ngokuxhasa umsebenzi weSayensi X ngeakhawunti yeprimiyamu.