Abarhubhululi beYunivesithi ye-Chung-Ang e-South Korea bafunda iindlela zokubamba nokusebenzisa ikhabhoni basebenzisa iimvuthuluka nofana imithombo yemvelo ecebileko njengesisetjenziswa sokudla. Lokhu kuqinisekisa ukusebenza kwezomnotho kwethekhnoloji.
Esifundweni esitjha, isiqhema esidoswa phambili nguPhrofesa u-Sungho Yoon noPhrofesa osebenzisana naye u-Chul-Jin Lee bahlola ukusetjenziswa kwe-carbon dioxide yezebubulo ne-dolomite ukukhiqiza imikhiqizo emibili ezokuthengisa: i-calcium formate ne-magnesium oxide.
Irhubhululo elithi, "Ukutjhugululwa okunamandla kwama-ayoni we-magnesium ne-calcium ukusuka ku-dolomite ukuya emikhiqizweni ewusizo enenani elingezelelweko ngokusebenzisa i-carbon dioxide," kwavezwa ku-Jenali ye-Chemical Engineering.
Ukutjhuguluka kobujamo bezulu yindaba ekulu ekufuze iqalwe phambili. Njengomphumela, amazwe ephasini loke enza imigomo yokwehlisa umthelela wayo.
Ukwenza isibonelo, i-European Union iphakamisa isethi epheleleko yemihlahlandlela yokufikelela ukungathathi hlangothi kwezulu ngo-2050. I-European Green Deal nayo igcizelela ukuqakatheka kokunciphisa ukukhishwa kwegesi ye-greenhouse.
Njengomphumela, abososayensi bahlola ubuchwepheshe bokubamba nokusebenzisa ikhabhoni njengeendlela ezithembisako zokwandisa ukugcinwa kwe-CO2 nokuguqulwa kwayo ngeendleko eziphasi.
Kodwana, irhubhululo lephasi loke lokubanjwa nokusetjenziswa kwekhabhoni lilinganiselwe emakhompawundini angaba ma-20 wokutjhugulula.
Ngokuya ngokuhlukahluka kwemithombo yokukhutjhwa kwe-CO2, ukuba neenhlobo ezinengi zamakhompawundi kuqakathekile.
Lokhu kutjengisa ukuqakatheka kokufunda okujulileko kweenkambo zokutjhugulula i-carbon dioxide enezinga eliphasi.
Esifundweni esitjha, isiqhema sasebenzisa i-catalyst (Ru/bpyTN-30-CTF) ukufaka i-hydrogen ku-carbon dioxide. Umphumela waba mikhiqizo emibili enenani elingezelelweko: i-calcium formate kanye ne-magnesium oxide.
I-calcium formate isetjenziswa njengesengezo sesamente, i-deicer, kanye nesengezo sokudla kweenlwana, kanye nezinye izinto ezifana nokutjhugulula isikhumba.
Ikambiso isiqhema eyathuthukisako ayisebenzi kwaphela, kodwana irhaba khulu, ikhiqiza umkhiqizo ngemizuzu emihlanu kwaphela emazingeni womtjhiso wegumbi.
Hlangana nezinye izinto, abarhubhululi balinganisela bona ikambiso le ingehlisa ukufuthumala kwephasi ngama-20% nayiqathaniswa neendlela zesiko zokukhiqiza i-calcium formate.
“Kunethando elikhulako lokusebenzisa i-carbon dioxide ukukhiqiza imikhiqizo eqakathekileko engasiza ukunciphisa imiphumela yokutjhuguluka kobujamo bezulu ngesikhathi kukhiqiza iinzuzo zezomnotho.
UProfesa Yoon wathi: "Ngokuhlanganisa ukusabela kwe-carbon dioxide hydrogenation kanye nokusabela kokushintshaniswa kwe-cation, kuthuthukiswe ikambiso yokuhlanza ama-metal oxides ngasikhathi sinye begodu kukhiqizwe i-formate eqakathekileko."
Abarhubhululi bahlola bona indlela yabo ingathatha indawo yeendlela zokukhiqiza zamanje. Ukwenza lokhu, bafunda umthelela webhoduluko nokuphumelela kwezomnotho kweendlela zokutjhugulula i-CO2 esimemeko.
"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 amathemba wokutjhugulula i-carbon dioxide ibe mikhiqizo ngokusimamako athembisa, iinkambo lezi akulula ngaso soke isikhathi ukuzikhulisa.
Inengi lamathekhnoloji we-CCU akakathengiswa ngombana ukusebenza kwawo kwezomnotho kuphasi nayiqathaniswa neenkambo zezamabhizinisi ezijayelekileko.
"Sitlhoga ukuhlanganisa ikambiso ye-CCU nokubuyiselwa kwemfucuza ukwenza bona ibe lisizo emvelweni nezomnotho. Lokhu kungasiza ukufikelela amaqophelo wokukhutjhwa kwekhaboni esikhathini esizako," kuphetha uDorhodera Lee.
Inethiwekhi yeendaba ezitjha ikulethela iindaba zakamuva zokwenza irhubhululo nezezinto ezitjha kwezesayensi, ibhoduluko, amandla, izinto ezisetjenziswako eziqakathekileko, ithekhnoloji kanye neenkoloyi ezisebenzisa umtjhini.
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