Cov kws tshawb fawb ntawm Chung-Ang University hauv Kaus Lim Qab Teb tau los nrog lub tswv yim ntawm kev siv cov pa roj carbon dioxide thiab dolomite hauv kev lag luam, uas yog cov pob zeb sedimentary uas muaj calcium thiab magnesium ntau thiab dav dav, los tsim ob yam khoom lag luam: calcium formate thiab magnesium oxide.
Hauv tsab ntawv tshaj tawm hauv Journal of Chemical Engineering, cov kws tshawb fawb piav qhia tias lawv cov thev naus laus zis ntes thiab siv cov pa roj carbon (CCU) yog raws li cov txheej txheem uas sib xyaw cov tshuaj carbon dioxide hydrogenation thiab cov tshuaj pauv cation kom ua kom cov hlau oxides huv si thiab tsim cov qauv tsim khoom muaj nqis, muaj nqis.
Tshwj xeeb, lawv tau siv cov tshuaj catalyst (Ru/bpyTN-30-CTF) los ntxiv hydrogen rau hauv carbon dioxide, tsim ob yam khoom muaj nqis ntxiv. Kev tanning tawv kuj siv cov calcium formate, cov tshuaj ntxiv cement, deicers thiab cov tshuaj ntxiv rau tsiaj txhu. Magnesium oxide, ntawm qhov tod tes, yog siv dav hauv kev tsim kho thiab kev lag luam tshuaj.
Cov kws tshawb fawb tseem ceeb Seongho Yoo thiab Chul-Jin Lee hais tias cov txheej txheem no tsis yog tsuas yog ua tau xwb, tab sis kuj ua tau sai heev, tsim cov khoom hauv tsib feeb xwb ntawm qhov kub thiab txias. Tsis tas li ntawd, nws pab neeg kwv yees tias cov txheej txheem no tuaj yeem txo qhov muaj peev xwm ua kom lub ntiaj teb sov li ntawm 20% piv rau cov txheej txheem ib txwm muaj ntawm kev tsim cov calcium formate.
Pawg neeg kuj tau soj ntsuam seb lawv txoj kev puas tuaj yeem hloov cov txheej txheem tsim khoom uas twb muaj lawm los ntawm kev tshuaj xyuas nws qhov cuam tshuam rau ib puag ncig thiab kev lag luam.
"Raws li cov txiaj ntsig, peb tuaj yeem hais tias peb txoj kev yog lwm txoj hauv kev zoo rau ib puag ncig piv rau kev hloov pauv carbon dioxide uas tuaj yeem hloov cov txheej txheem ib txwm muaj thiab pab txo cov pa roj carbon dioxide hauv kev lag luam," Yun hais.
Tus kws tshawb fawb tau hais tias thaum hloov cov pa roj carbon dioxide mus ua cov khoom muaj txiaj ntsig zoo li muaj kev cia siab, cov txheej txheem no tsis yog ib txwm yooj yim rau kev nthuav dav. Feem ntau cov thev naus laus zis CCU tseem tsis tau muab coj los ua lag luam vim tias lawv qhov kev ua tau zoo hauv kev lag luam qis piv rau cov txheej txheem lag luam tseem ceeb.
"Peb yuav tsum muab cov txheej txheem CCU nrog rau kev siv cov khib nyiab rov qab ua ke kom nws ua tau zoo rau ib puag ncig thiab kev lag luam. Qhov no tuaj yeem pab ua tiav cov hom phiaj tso pa phem xoom yav tom ntej," Lee hais.