Ana amfani da fasahar kama carbon dioxide don cire carbon dioxide daga rafukan iskar gas ko raba shi azaman samfurin gas. Ɗauka shine mataki na farko a fasahar kamawa da adana carbon (CCS). Carbon dioxide yana buƙatar kasancewa cikin tsafta mai ƙarfi yayin sufuri da adanawa, amma a mafi yawan lokuta, ƙaddamar da iskar carbon dioxide a cikin iskar gas ɗin masana'antu bai cika wannan buƙatu ba. Don haka, dole ne a raba carbon dioxide daga iskar gas; wannan tsari shi ake kira carbon dioxide kama. Ana iya raba fasahohin kama carbon dioxide zuwa nau'o'i da yawa, ciki har da shan sinadarai, sha na jiki, adsorption na jiki, rabuwar membrane, da rabuwar cryogenic. Zaɓin hanyoyin kamawa da kayan aiki ya dogara da ainihin halaye da sigogin tushen iskar carbon dioxide.
An yi amfani da hanyoyin kama carbon a cikin masana'antar mai, sinadarai, da masana'antar wutar lantarki shekaru da yawa. Yin amfani da fasaha na yanzu don ɗaukar duka ko uku {1} rubu'in carbon dioxide a cikin wutar lantarki na yau da kullun yana buƙatar kayan aiki da yawa umarni masu girma fiye da kayan aiki na yau da kullun{2}}maɗaukaki{3} farashi, mai girma-makamashi{5}zaɓi mai cinyewa.