I-atikili le ibuyekezwe ngokuya kweenkambiso nemigomo yokuhlela ye-Science X. Abahleli bagandelele iimfanelo ezilandelako ngesikhathi baqinisekisa ukuthembeka kokuqukethwe:
Ukutjhuguluka kobujamo bezulu yindaba eqakathekileko efuna ukuqalwa phambili ephasini loke. Amazwe ephasini loke enza imigomo yokwehlisa imiphumela yokufuthumala kwephasi nokutjhuguluka kobujamo bezulu. Ukwenza isibonelo, i-European Union iphakamisa isethi epheleleko yemihlahlandlela yokufikelela ukungathathi hlangothi kwezulu ngo-2050. Ngokufanako, i-European Green Deal iqakathekisa ukwehlisa ukukhishwa kwegesi ye-greenhouse.
Ukubamba i-carbon dioxide (i-CO2) ekhutjhwako bese uyitjhugulula ngamakhemikhali ibe mikhiqizo ewusizo yezokurhweba ngenye yeendlela zokunciphisa ukufuthumala kwephasi nokunciphisa imiphumela yayo. Abososayensi njengamanje bahlola ithekhnoloji yokubamba nokusetjenziswa kwekhabhoni (i-CCU) njengendlela ethembisako yokwandisa ukugcinwa nokusetjenziswa kwekhabhoni dioksayidi ngeendleko eziphasi.
Kodwana, irhubhululo le-CCU lephasi loke lilinganiselwe khulu emakhompawundini atjhugululako angaba ma-20. Ngokuya ngokuhlukahluka kwemithombo yokukhutjhwa kwe-CO2, ukutholakala kwamakhompawundi ahlukahlukeneko kuqakathekile, okuzokutlhoga irhubhululo elijulileko ngeenkambo ezingatjhugulula i-CO2 ngitjho nasezingeni eliphasi.
Isiqhema sabarhubhululi abavela e-Korea's Chung-Ang University senza irhubhululo ngeenkambo ze-CCU ezisebenzisa iimvuthuluka nofana imithombo yemvelo ecebileko njengezinto ezisetjenziswako ukuqinisekisa bona zisebenza ngokomnotho.
Isiqhema serhubhululo esidoswa phambili nguPhrofesa Sungho Yoon noPhrofesa osebenzisana naye uChul-Jin Lee muva nje bagadangise irhubhululo elikhuluma ngokusetjenziswa kwe-carbon dioxide yezebubulo ne-dolomite, idwala elivamileko nelivamileko elinothile nge-calcium ne-magnesium, ukukhiqiza imikhiqizo emibili engathengiswa: i-calcium formate. kanye ne-magnesium oxide.
"Kunethando elikhulako lokusebenzisa i-carbon dioxide ukukhiqiza imikhiqizo eqakathekileko engasiza ukunciphisa imiphumela yokutjhuguluka kobujamo bezulu ngesikhathi kukhiqiza iinzuzo zezomnotho. Ngokuhlanganisa ukusabela kwe-carbon dioxide hydrogenation kanye nokusabela kokushintshaniswa kwe-cation, sithuthukise indlela yokuhlanza ngasikhathi sinye ama-metal oxides kanye neenkambo zokukhiqiza amafomethi aqakathekileko," kuphawula uProfesa Yin.
Esifundweni sabo, abososayensi basebenzisa i-catalyst (Ru/bpyTN-30-CTF) ukufaka i-hydrogen ku-carbon dioxide, okurholela emikhiqizweni emibili enenani elingezelelweko: i-calcium formate kanye ne-magnesium oxide. I-calcium formate, isengezo sesamente, i-deicer, kanye nesengezo sokudla kweenlwana, nayo isetjenziselwa ukutjhugulula isikhumba.
Ngokuphikisako, i-magnesium oxide isetjenziswa khulu emabubulweni wokwakha newemithi. Ikambiso le ayikghonakali kwaphela, kodwana irhaba khulu, ikhiqiza umkhiqizo ngemizuzu emi-5 kwaphela emazingeni womtjhiso wegumbi. Ukungezelela, abarhubhululi balinganisela bona ikambiso le ingehlisa ukufuthumala kwephasi ngama-20% nayiqathaniswa neendlela zesiko zokukhiqiza i-calcium formate.
Isiqhema sibuye sihlolisise bona indlela yabo ingathatha indawo yeendlela zokukhiqiza ezikhona ngokufunda umthelela wayo ebhodulukweni nokuphumelela kwezomnotho. "Ngokuya ngemiphumela, singatjho bona indlela yethu yindlela engalimazi ibhoduluko yokutjhugulula i-carbon dioxide engathatha indawo yeendlela ezijayelekileko begodu isize ukwehlisa ukukhutjhwa kwe-carbon dioxide emabubulweni," kuchaza uProfesa Yin.
Nanyana ukutjhugulula i-carbon dioxide ibe mikhiqizo ewusizo kuzwakala kuthembisa, iinkambo lezi akulula ngaso soke isikhathi ukuzikhulisa. Inengi lamathekhnoloji we-CCU alikathengiswa ngombana ukusebenza kwawo kwezomnotho kuphasi nayiqathaniswa neenkambo ezijayelekileko zokuthengisa. "Kutlhogeka bona sihlanganise ikambiso ye-CCU nokubuyiselwa kwemfucuza ukwenzela bona ibe yinto ephumelelako emvelweni nezomnotho. Lokhu kungasiza ukufikelela imigomo yokukhipha i-net-zero esikhathini esizako," kuphetha uDorhodera Lee.
Ilwazi elinabileko: U-Hayoung Yoon et al., Ukutjhugulula i-Magnesium ne-Calcium Ion Dynamics ku-Dolomite ibe yimikhiqizo enegugu elingezelelweko ngokusebenzisa i-CO2, iJenali ye-Chemical Engineering (2023). DOI: 10.1016/j.cej.2023.143684
Nangabe uhlangabezana nephutha lokuthayipha, ukunganembi, nofana ungathanda ukuthumela isibawo sokuhlela okuqukethwe ekhasini leli, sibawa usebenzise iforomo leli. Ngemibuzo ejwayelekileko, sibawa usebenzise iforomo lethu lokuthintana. Ukuthola iimpendulo ezijayelekileko, sebenzisa isigaba sokuphawula komphakathi ngezansi (landela imihlahlandlela).
Umbono wakho uqakathekile kithi. Kodwana, ngebanga lomthamo omkhulu wemilayezo, angeze saqinisekisa ipendulo eyenziwe ngomuntu mathupha.
Ikheli lakho le-imeyili lisetjenziselwa ukutjela abamukeli bona ngubani othume i-imeyili. Ikheli lakho namkha ikheli lomuntu owamukelako angeze lasetjenziselwa enye into. Ilwazi olifakako lizokuvela ku-imeyili yakho begodu angeze ligcinwe yi-Phys.org nganoma ngiyiphi indlela.
Yamukela iindaba zaqobe veke kanye/nofana zaqobe langa ebhokisini lakho lokungenayo. Ungazikhupha nganoma ngisiphi isikhathi begodu angeze sabelane ngemininingwana yakho nabanye abantu.
Senza okuqukethwe kwethu kufikeleleke kiwo woke umuntu. Cabanga ngokusekela umnqopho we-Sayensi X nge-akhawundi ephezulu.