Umthengisi wePotassium Alum eMzantsi Afrika

Yintoni iPotassium Alum?

I-Potassium alum (i-potassium aluminium sulfate, i-KAl(SO₄)₂·12H₂O) yi-sulfate ephindwe kabini yendalo ye-potassium kunye ne-aluminium - ngokwembali yayiyi-"alum" yokuqala esetyenziswa ekucoceni amanzi, ekudayeni ilaphu, namayeza. Yinto eqinileyo engenambala, ekristale enyibilika ngokulula emanzini ukuze inike isisombululo esine-asidi (pH ~ 4–4.5) kunye ne-hydrolysis ye-Al³⁺ kwiintlobo ze-aluminium hydroxide, ngendlela efanayo ne-aluminium sulfate yorhwebo (i-filter alum). I-Potassium alum ifana ngokweekhemikhali kwindlela yokwenza i-coagulation ne-aluminium sulfate kwimeko yonyango lwamanzi - zombini zibonelela nge-Al³⁺ njengeentlobo ze-coagulation ezisebenzayo. I-potassium ion (K⁺) sisondlo esibalulekileyo sesityalo kwaye ayinampembelelo imbi ekusetyenzisweni kwamanzi.

Ukuxinana koNyango lwaManzi

Kwindlela yokunyanga amanzi, i-potassium alum isebenza ngendlela efanayo ne-aluminium sulfate — i-Al³⁺ hydrolyses kwiintlobo ze-cationic aluminium hydroxide ezidibanisa i-colloidal turbidity, amasuntswana odongwe, kunye ne-NOM emanzini aluhlaza. I-Potassium alum isetyenziswa kwizityalo ezincinci zokunyanga amanzi, unyango lwamanzi oluphathwayo, kunye nemisebenzi yokunyanga amanzi amaninzi. Ngokwembali, i-alum crystal yayiyiminerali yokunyanga amanzi yasekhaya/yoluntu — isiqwenga se-alum crystal esixutywe kwisitya samanzi amdaka sasiya kuxinana size sihlalise amasuntswana kwimizuzu embalwa. Kwindlela yokunyanga amanzi yanamhlanje, i-aluminium sulfate elulwelo okanye eyomileyo ikhethwa kakhulu ngenxa yexabiso eliphantsi, kodwa i-potassium alum isacacisiwe kwezinye iindlela zamanzi ezisetyenziswa kudidi lokutya kunye namayeza.

Ukutya, Izinto Zokuthambisa, kunye Nezicelo Zemizi-mveliso

I-Potassium alum inembali ende ekusetyenzisweni kokutya: njenge-acidulant kunye ne-firming agent (E522), i-agent yegwele eyinxalenye ye-baking powder (isabela kunye ne-sodium bicarbonate ukuvelisa i-CO₂), kwaye njenge-pickling additive ukugcina imifuno iqinile. Kwizinto zokuthambisa kunye nokunyamekela umntu, i-potassium alum crystal isetyenziswa njenge-deodorant/astringent yendalo (ii-ion ze-aluminium zibamba iiproteni kumphezulu wesikhumba, zinciphisa ukubila) kwaye njenge-astringent emva kokucheba. Kwi-textile dyeing, i-alum isetyenziswa njenge-mordant yokubopha idayi yendalo kwi-textile fibres. Kwi-leather tanning (alum tawing), yindlela eyahlukileyo ye-chrome tanning. I-Terracore Chemicals inikezela nge-potassium alum ye-food-grade kunye ne-technical-grade kwiingxowa ezingama-25 kg kulo lonke elaseMzantsi Afrika.