Umhlinzeki we-Potassium Alum eNingizimu Afrika

Iyini i-Potassium Alum?

I-Potassium alum (i-potassium aluminium sulfate, i-KAl(SO₄)₂·12H₂O) iyi-sulfate ephindwe kabili etholakala ngokwemvelo ye-potassium ne-aluminium — ngokomlando yayiyi-“alum” yokuqala esetshenziswa ekuhlanzeni amanzi, ukudaya izindwangu, kanye nemithi. Iyi-crystalline solid engenambala encibilika kalula emanzini ukuze inikeze isisombululo esi-acidic (pH ~ 4–4.5) nge-hydrolysis ye-Al³⁺ kuzinhlobo ze-aluminium hydroxide, ngendlela efanayo ne-aluminium sulfate yokuhweba (i-filter alum). I-Potassium alum ifana ngamakhemikhali ekuziphatheni kwe-coagulation ne-aluminium sulfate kumongo wokwelashwa kwamanzi — zombili zinikeza i-Al³⁺ njengezinhlobo ze-coagulation ezisebenzayo. I-potassium ion (K⁺) iyisakhi esibalulekile sesitshalo futhi ayinawo umphumela omubi ekusetshenzisweni kokwelashwa kwamanzi.

Ukuhlanganiswa Kokwelashwa Kwamanzi

Ekuphathweni kwamanzi, i-potassium alum isebenza ngendlela efanayo ne-aluminium sulfate — i-Al³⁺ hydrolyses ezinhlotsheni ze-cationic aluminium hydroxide ezihlanganisa i-colloidal turbidity, izinhlayiya zobumba, kanye ne-NOM emanzini angavuthiwe. I-Potassium alum isetshenziswa ezitshalweni zokwelashwa kwamanzi ezincane, ekuphathweni kwamanzi okuphathekayo, kanye nasemisebenzini yokwelashwa kwamanzi amaningi. Ngokomlando, i-alum crystal yayiyiminerali yokwelashwa kwamanzi yasekhaya/yomphakathi — ucezu lwe-alum crystal oluxutshwe esitsheni samanzi angcolile lwaluzohlanganisa futhi luhlalise izinhlayiya zingakapheli imizuzu. Ekuphathweni kwamanzi kwanamuhla, i-aluminium sulfate ewuketshezi noma eyomile ikhethwa kakhulu ngenxa yezindleko eziphansi, kodwa i-potassium alum isalokhu ichazwe kwezinye izinhlelo zokusebenza zamanzi zezinga lokudla kanye nezokwelapha.

Ukudla, Ubuhle, kanye Nezicelo Zezimboni

I-Potassium alum inomlando omude ekusetshenzisweni kokudla: njenge-acidulant yezinga lokudla kanye ne-firming agent (E522), i-ejenti evubelayo etholakala ku-baking powder (isabela ne-sodium bicarbonate ukuze ikhiqize i-CO₂), kanye ne-pickling additive ukuze igcine imifino iqinile. Ezimonyweni nasekunakekelweni komuntu siqu, i-potassium alum crystal isetshenziswa njenge-deodorant/astringent yemvelo (ama-ion e-aluminium ancipha amaprotheni ebusweni besikhumba, anciphisa ukujuluka) kanye ne-aftershave astringent. Ekudayini izindwangu, i-alum isetshenziswa njenge-mordant yokubopha udayi wemvelo kuma-textile fibre. Ekushiseni isikhumba (i-alum tawing), kuyindlela ehlukile yokushisisa i-chrome. I-Terracore Chemicals inikeza i-potassium alum yezinga lokudla kanye nezinga lobuchwepheshe ezikhwameni ezingama-25 kg kulo lonke elaseNingizimu Afrika.