Abacwaningi eNyuvesi yaseChung-Ang eNingizimu Korea bafike nomqondo wokusebenzisa i-carbon dioxide yezimboni kanye ne-dolomite, idwala elivamile nelisakazekile elicebile nge-calcium ne-magnesium, ukukhiqiza imikhiqizo emibili ethengiswayo: i-calcium formate kanye ne-magnesium oxide.
Ephepheni elishicilelwe kuyi-Journal of Chemical Engineering, ososayensi bachaza ukuthi ubuchwepheshe babo bokubamba nokusebenzisa i-carbon (CCU) busekelwe enkambisweni ehlanganisa ukusabela kwe-carbon dioxide hydrogenation kanye nokusabela kwe-cation exchange ukuze kuhlanzwe ama-metal oxides ngasikhathi sinye futhi kukhiqizwe ukukhiqizwa kwe-formate enenani eliphezulu, enenani eliphezulu.
Ngokukhethekile, basebenzise i-catalyst (Ru/bpyTN-30-CTF) ukwengeza i-hydrogen ku-carbon dioxide, okukhiqiza imikhiqizo emibili enenani elongeziwe. Ukushiswa kwesikhumba kusebenzisa ne-calcium formate, izithasiselo zesimende, ama-deicers kanye nezithasiselo zokudla kwezilwane. I-magnesium oxide, ngakolunye uhlangothi, isetshenziswa kabanzi embonini yokwakha kanye neyokwelapha.
Abacwaningi abaphambili uSeongho Yoo noChul-Jin Lee bathi le nqubo ayigcini nje ngokuba nokwenzeka, kodwa futhi ishesha kakhulu, ikhiqiza umkhiqizo ngemizuzu emihlanu kuphela ekushiseni kwegumbi. Ngaphezu kwalokho, ithimba lakhe lilinganisela ukuthi le nqubo inganciphisa amandla okufudumala komhlaba ngo-20% uma kuqhathaniswa nezindlela zendabuko zokukhiqiza i-calcium formate.
Ithimba liphinde lahlola ukuthi indlela yabo ingathatha indawo yezindlela zokukhiqiza ezikhona ngokuhlola umthelela wayo kwezemvelo kanye nokusebenza kahle kwezomnotho.
“Ngokusekelwe emiphumeleni, singasho ukuthi indlela yethu iyindlela engcono kakhulu yokuguqula i-carbon dioxide engathatha indawo yezindlela zendabuko futhi isize ekunciphiseni ukukhishwa kwe-carbon dioxide yezimboni,” kusho uYun.
Usosayensi waphawula ukuthi nakuba ukuguqula i-carbon dioxide ibe imikhiqizo ewusizo kuzwakala kuthembisa, lezi zinqubo akulula ngaso sonke isikhathi ukuzikhulisa. Ubuchwepheshe obuningi be-CCU abukakathengiswa ngoba ukusebenza kwabo kwezomnotho kuphansi uma kuqhathaniswa nezinqubo ezivamile zezentengiselwano.
"Sidinga ukuhlanganisa inqubo ye-CCU nokusetshenziswa kabusha kwemfucuza ukuze ikwazi ukusebenza kahle emvelweni nakwezomnotho. Lokhu kungasiza ekufinyeleleni imigomo yokukhipha ukungcola okungenayo igesi esikhathini esizayo," kusho uLee.