Umhlinzeki we-Sodium Metabisulfite eNingizimu Afrika

Iyini i-Sodium Metabisulfite?

I-Sodium metabisulfite (Na₂S₂O₅), eyaziwa nangokuthi i-sodium pyrosulfite, iyimpuphu emhlophe ekristalu eyi-anhydrous ye-sodium bisulfite, ekhipha i-sulfur dioxide lapho kukhona amanzi noma i-asidi. Ngokuqukethwe kwe-SO₂ okungu-≥64%, iyisithwali se-SO₂ esigxile kakhulu nesizinzile esisetshenziswa njengesivikelo, i-antioxidant, i-bleaching agent, kanye ne-reducing agent ekudleni, eziphuzweni, ekwelapheni amanzi, emithi, kanye nasezimbonini zezimayini. Ibhaliswe njengesithasiselo sokudla i-E223 futhi iphakathi kwamakhemikhali e-sulfite asetshenziswa kakhulu emhlabeni jikelele.

Imboni Yokudla, Iziphuzo Newayini

Ekucubungulweni kokudla, i-sodium metabisulfite igcina izithelo ezomisiwe, imifino, kanye namajusi ekuboleni nasekuboleni kwamagciwane. Ekuphekeni, ifakwa ku-wort ukuvimbela ukubola. Ekwenzeni iwayini, iyancibilikiswa ukuze ikhiqize isisombululo se-sulfiti sokuhlanzeka kwemiphongolo kanye nokuzinza kwewayini phakathi kokubilisa. Ekucubungulweni kokudla kwasolwandle, ivimbela amabala amnyama (i-melanosis) kuma-prawns kanye nama-crustacean ngesikhathi sokugcina nokusatshalaliswa. Imikhawulo yemithetho kokuqukethwe kwe-SO₂ iyahlukahluka ngesigaba sokudla kanye nendawo; i-Terracore inikeza izitifiketi zokuhlaziywa ukusiza ukuthobela imithetho.

Ukwelashwa Kwamanzi Nokumbiwa Kwezimayini

I-Sodium metabisulfite isetshenziselwa ukususa i-chlorine emanzini okuphuza kanye nokucubungula ukungcola, isabela ngokushesha ne-chlorine esele futhi ngaphandle kokufaka imikhiqizo eyingozi. Ezimayini, iyisidambisi esibalulekile sokuntanta esisetshenziswa ekuntantaneni okukhethiwe kwensimbi eyigugu kanye ne-base metal sulfide ores, lapho ingezwa khona kumjikelezo wokuntanta ukuze icindezele i-pyrite ne-arsenopyrite ngenkathi intanta amaminerali aphethe igolide. Iphinde isetshenziswe ekususeni i-cyanide emisipheni yemigodi yegolide (ukunciphisa i-CN⁻ enqubweni ye-Inco SO₂/Air).

I-ejenti Yokunciphisa Imithi Nezimboni

I-sodium metabisulfite esezingeni lemithi isetshenziswa njenge-antioxidant kanye ne-preservative ekwakhiweni okujovwayo, amalungiselelo angaphandle, kanye noketshezi oluphuzwayo ukuvimbela ukuwohloka kwe-oxidative kwezithako ezisebenzayo. Kumakhemikhali ezimboni kunciphisa ukugeleza kwemfucuza ye-chromate kusuka ku-electroplating kuya ku-trivalent chromium (Cr³⁺) ukuze kutholakale imvula ephephile futhi kulahlwe. Iphinde isetshenziswe ekuthwebuleni izithombe njenge-preservative, ekuvuvukeni kwerabha, ekufakweni kwendwangu okunyatheliswayo, kanye nasekukhanyeni kwe-paper pulp.