Nkhaniyi yawunikidwanso mogwirizana ndi njira ndi mfundo za Science X zolembera nkhani. Olemba nkhani agogomezera makhalidwe otsatirawa pamene akutsimikizira kuti nkhaniyo ndi yoona:
Kusintha kwa nyengo ndi nkhani yaikulu yomwe ikufunika kuganiziridwa padziko lonse lapansi. Mayiko padziko lonse lapansi akupanga mfundo zochepetsera zotsatira za kutentha kwa dziko lapansi komanso kusintha kwa nyengo. Mwachitsanzo, European Union ikupereka malangizo okwanira kuti pakhale kusalowerera ndale pofika chaka cha 2050. Momwemonso, European Green Deal ikufuna kuchepetsa mpweya woipa womwe umatulutsa kutentha kwa dziko.
Kugwira mpweya woipa (CO2) wotulutsidwa ndi kusinthidwa ndi mankhwala kukhala zinthu zothandiza zamalonda ndi njira imodzi yochepetsera kutentha kwa dziko lapansi ndikuchepetsa zotsatira zake. Asayansi pakadali pano akufufuza ukadaulo wokhudza kugwiritsa ntchito mpweya woipa (CCU) ngati njira yabwino yowonjezerera kusungira ndi kukonza mpweya woipa pamtengo wotsika.
Komabe, kafukufuku wapadziko lonse wa CCU makamaka umangokhala ndi mankhwala osintha pafupifupi 20. Popeza pali mitundu yosiyanasiyana ya magwero a mpweya wa CO2, kupezeka kwa mankhwala osiyanasiyana ndikofunikira kwambiri, zomwe zidzafuna kafukufuku wozama kwambiri pa njira zomwe zingasinthe CO2 ngakhale pamlingo wochepa.
Gulu la ofufuza ochokera ku yunivesite ya Chung-Ang ku Korea likuchita kafukufuku pa njira za CCU zomwe zimagwiritsa ntchito zinyalala kapena zinthu zachilengedwe zambiri ngati zopangira kuti zitsimikizire kuti zingagwiritsidwe ntchito pazachuma.
Gulu lofufuza lotsogozedwa ndi Pulofesa Sungho Yoon ndi Pulofesa Wothandiza Chul-Jin Lee posachedwapa lafalitsa kafukufuku wokhudza kugwiritsa ntchito carbon dioxide ndi dolomite, mwala wamba komanso wamba wokhala ndi calcium ndi magnesium, kuti apange zinthu ziwiri zomwe zingagulitsidwe: calcium formate. ndi magnesium oxide.
"Pali chidwi chowonjezeka chogwiritsa ntchito carbon dioxide popanga zinthu zamtengo wapatali zomwe zingathandize kuchepetsa zotsatira za kusintha kwa nyengo pomwe zikupanga phindu la zachuma. Mwa kuphatikiza hydrogenation reactions ya carbon dioxide ndi cation exchange reactions, tapanga njira yoyeretsera nthawi imodzi ma oxide achitsulo ndi njira zopangira mawonekedwe amtengo wapatali," adatero Pulofesa Yin.
Mu kafukufuku wawo, asayansiwa adagwiritsa ntchito chothandizira (Ru/bpyTN-30-CTF) kuti awonjezere haidrojeni ku carbon dioxide, zomwe zidapangitsa kuti pakhale zinthu ziwiri zowonjezera phindu: calcium formate ndi magnesium oxide. Calcium formate, chowonjezera cha simenti, deicer, ndi chakudya cha ziweto, chimagwiritsidwanso ntchito popaka utoto pachikopa.
Mosiyana ndi zimenezi, magnesium oxide imagwiritsidwa ntchito kwambiri m'makampani omanga ndi opanga mankhwala. Njira imeneyi si yotheka kokha, komanso yachangu kwambiri, kupanga mankhwalawa mu mphindi 5 zokha kutentha kwa chipinda. Kuphatikiza apo, ofufuza akuyerekeza kuti njira imeneyi ingachepetse kutentha kwa dziko ndi 20% poyerekeza ndi njira zachikhalidwe zopangira calcium formate.
Gululi likufufuzanso ngati njira yawo ingalowe m'malo mwa njira zomwe zilipo kale popanga zinthu mwa kuphunzira momwe zimakhudzira chilengedwe komanso momwe chuma chikuyendera. "Kutengera zotsatira zake, tinganene kuti njira yathu ndi njira ina yabwino yosungira chilengedwe m'malo mwa kusintha kwa carbon dioxide yomwe ingalowe m'malo mwa njira zachikhalidwe ndikuthandizira kuchepetsa kutulutsa kwa carbon dioxide m'mafakitale," anafotokoza Pulofesa Yin.
Ngakhale kusintha carbon dioxide kukhala zinthu zothandiza kumamveka ngati kopindulitsa, njirazi nthawi zambiri sizimakhala zosavuta kuzikulitsa. Zipangizo zambiri za CCU sizinagulitsidwebe chifukwa kuthekera kwawo pazachuma kuli kochepa poyerekeza ndi njira zodziwika bwino zamalonda. "Tiyenera kuphatikiza njira ya CCU ndi kubwezeretsanso zinyalala kuti zikhale zopindulitsa pazachilengedwe komanso zachuma. Izi zingathandize kukwaniritsa zolinga za mpweya wopanda mpweya mtsogolo," adatero Dr. Lee.
Zambiri: Hayoung Yoon et al., Kusintha Magnesium ndi Calcium Ion Dynamics mu Dolomite kukhala Zinthu Zothandiza Zowonjezeredwa Pogwiritsa Ntchito CO2, Journal of Chemical Engineering (2023). DOI: 10.1016/j.cej.2023.143684
Ngati mwakumana ndi vuto la kulemba, kulakwitsa, kapena mukufuna kutumiza pempho loti musinthe zomwe zili patsamba lino, chonde gwiritsani ntchito fomu iyi. Pa mafunso ambiri, chonde gwiritsani ntchito fomu yathu yolumikizirana. Kuti mupeze mayankho ambiri, gwiritsani ntchito gawo la ndemanga za anthu onse pansipa (tsatirani malangizo).
Maganizo anu ndi ofunikira kwa ife. Komabe, chifukwa cha kuchuluka kwa mauthenga, sitingatsimikizire kuti uthenga wanu udzayankhidwa mwamakonda athu.
Imelo yanu imagwiritsidwa ntchito pongodziwitsa olandira omwe adatumiza imeloyo. Adilesi yanu kapena adilesi ya wolandirayo sizigwiritsidwa ntchito pazifukwa zina zilizonse. Chidziwitso chomwe mwalemba chidzawonekera mu imelo yanu ndipo sichidzasungidwa ndi Phys.org mwanjira iliyonse.
Landirani zosintha za mlungu uliwonse ndi/kapena za tsiku ndi tsiku mu imelo yanu. Mutha kuletsa kulembetsa nthawi iliyonse ndipo sitidzagawana zambiri zanu ndi anthu ena.
Timapangitsa kuti nkhani zathu zipezeke kwa aliyense. Ganizirani zothandizira cholinga cha Science X ndi akaunti yapamwamba.