Waliwo enkola nnyingi ez’okuteekateeka aluminiyamu hydroxide, nga Bayer Method, soda lime sintering method, ammonium bicarbonate method, etc. Mu butuufu, enkola ya alumina nayo nkola nnungi ey’okuteekateeka. enkola ey’enjawulo ey’okuddamu eri bweti:
Olw’okuba aluminiyamu oxide ye amphoteric oxide ekizibu okusaanuuka mu mazzi, ate aluminiyamu hydroxide ye amphoteric hydroxide ekaluba okusaanuuka mu mazzi. esobola okusaanuusibwa mu asidi ow’amaanyi ne base ez’amaanyi, naye si soluble mu ammonia (weak base) oba obutakola {1} okusoberwa mu kaboni asidi (ekizibu ekitaliimu) { 2, kisobola {1} soluble mu kaboni asidi (okutabula kwa asidi)
1. Saanuula aluminiyamu oxide mu asidi wa sulfuric okufuna solution ya aluminum sulfate, olwo osseeko ammonia asukkiridde mu aluminum sulfate solution okufuna aluminium hydroxide precipitate, esobola okusengejebwa, okunaaba, n’okukala.
al2o3+3H2SO4=al2(SO4) 3+3H2O .
al2(SO4) 3+6NH 3.H2O =2al(OH)3↓ +3(NH4)2SO4.
2. Saanuula aluminiyamu oxide mu sodium hydroxide okufuna sodium metaaluminate solution, n’oluvannyuma n’oyisa kaboni dayokisayidi asukkiridde mu sodium metaalumamine solution okufuna aluminium hydroxide, eyinza okutonnyezebwa, okusengejebwa, okunaaba, n’okukala.
Kinaamanyibwa nti mu nkola y’okuteekateeka, ekigendererwa ky’okugattako amazzi ga ammonia agasukkiridde ne kaboni dayokisayidi kwe kulaba nga alumina esobola okufuulibwa ddala mu aluminiyamu hydroxide okufuna ekintu ekilongoofu.
