desulphurisation na kwal
Ragewar da sulfur daga kwal ya zama muhimmin mataki a cikin tashoshin wutar lantarki, inda ake rage yawan sulfur kafin konewa wanda ke rage gurbatawa yadda ya kamata. Misali, yana taimakawa wajen rage yawan fitar da sulfur dioxide kamar yadda wannan gas--muhimmin gurbataccen abu da ke haifar da ruwan sama mai tsanani da matsalolin lafiya kamar hare-haren asma--ke fitarwa kai tsaye cikin yanayin ƙasa inda mutane ke numfashi. Fasahar rage sulfur daga kwal tana dauke da hanyoyi daban-daban, kamar rage sulfur na gajimare mai danshi, shigar da sorbent mai bushewa, da fasahar kwandishan mai zagaye. Wadannan tsarin suna aiki ta hanyar kama sulfur dioxide a cikin nau'in slurry ko canza shi zuwa samfurin shara mai ƙarfi wanda za a iya zubar da shi lafiya. Aikace-aikacen fasahar rage sulfur suna da yawa da bambance-bambance, daga manyan tashoshin wutar lantarki zuwa injinan masana'antu inda kwal ke amfani a matsayin mai. An haɗa tare da waɗannan fasahohin, kamfanonin masana'antu na iya cika tsauraran ka'idojin muhalli da rage tasirin carbon ɗinsu.