Fluoride-ka biyuhu waa seef laba af leh. Dalka Mareykanka, fluoride-ka waxaa lagu daray durdurrada biyaha badankood si looga hortago suuska ilkaha. (Waxaan xusi karaa in fluoride-ku si dabiici ah uga jiro ilo badan oo biyo la cabbo ah oo adduunka oo dhan ah). Si kastaba ha ahaatee, fluoride-ku wuxuu waxyeello u geysan karaa lafaha qiyaaso badan wuxuuna xitaa noqon karaa mid dilaa ah haddii aad qaadato tiro badan.
Alumina-da firfircoon ee biyaha ka baxda waxay door muhiim ah ka ciyaartaa yareynta heerarka fluoride-ka ee biyaha. Marka sidaas la sameeyo, alumina-da firfircoon waxay biyaha ku reebtaa fluoride ku filan si dadku u helaan faa'iidooyinkeeda caafimaad ee suurtagalka ah, isla markaana waxay hubinaysaa in xaddi fluoride ah oo waxyeello u geysta caafimaadka uusan ku sii jirin biyaha la cabbo.
Sannadkii 1994-kii, Hay'adda Caafimaadka Adduunka waxay ku talisay in heerarka fluoride-ka ee biyaha laga helo laga bilaabo 0.5-1mg/L. Heerarka fluoride-ka ee ka sarreeya 1mg waa in la sameeyaa defluoride, taas oo lagu samayn karo saddex siyaabood oo kala duwan: kiimikooyin iyo roobab, iyadoo la adeegsanayo teknoolojiyada ku salaysan xuubka, ama iyadoo la adeegsanayo is-weydaarsiga ion-ka iyo nuugista.
Inta badan hababkan waxaa loo isticmaalaa isku-darka. Tusaale ahaan, marka heerarka fluoride ay ka sarreeyaan 15ppm, waxaa la isticmaalaa lime kaas oo hoos yimaada kiimikooyinka, qaybta roobkana waa in la isticmaalaa sababtoo ah waxay la tacaali karaan heerarka sare ee fluoride. Marka heerkaas la yareeyo iyadoo la isticmaalayo lime, alumina-da firfircoon, oo hoos timaada qaybta nuugista, waa in loo isticmaalaa in lagu yareeyo heerka fluoride ilaa 1ppm maadaama alumina-da firfircoon ay nadiifin karto biyaha ilaa 99%.
Sidee ayuu u sameeyaa Alumina Firfircoonka shaqee sidii looga saari lahaa fluoride biyaha?
Alumina-da firfircoon waxay nuugtaa fluoride sababtoo ah fluoride waxaa soo jiita alumina. Waxay rabtaa inay sameyso fluoride aluminium ah oo ay sameyso marka ay la kulanto alumina-da firfircoon. Alumina fluoride waxay ku sii dhegi doontaa kuuladaha alumina ilaa inta heerka pH ee biyuhu uu ka hooseeyo 6. Haddii pH-ga biyuhu uu ka hooseeyo 6, waxtarka alumina-da firfircoon wuxuu bilaabmaa inuu yaraado. Waxay sidoo kale u oggolaan kartaa aluminium inuu galo biyahaaga, inkastoo aluminiumku uusan caadi ahaan ku milmin biyaha.
Fiiro gaar ah: Osmosis-ka dib-u-noqoshada waxaa loo isticmaalaa in aluminiumka laga saaro biyaha, sidoo kale waxaa loo isticmaalaa in lagu nadiifiyo qaar ka mid ah walxaha. Aluminiumku badanaa ma galo biyaha sababtoo ah biyuhu way ku adag tahay inay milmaan.
Waxaa lagugula talinayaa inaad alumina firfircoon ku daaweyso aluminium sulfate ka hor intaadan isticmaalin si aad u horumariso socodka nuugista ugu horreysa. Ka dib daaweynta ka hor, waxaa muhiim ah in la xasuusto in falcelinta nuugista ee alumina firfircoon ay ku xiran tahay heerka socodka. In kasta oo firfircoonidu ay la tacaali karto heerarka socodka sare oo ay weli shaqeyso, awoodda nuugista ayaa hoos u dhacday taasina waxay horseedi kartaa in la sameeyo wareegyo dheeraad ah. Labanlaab heerka socodka ayaa u oggolaaday 33% fluoride dheeraad ah sariiraha alumina firfircoon, taasoo yareyneysa waxtarka alumina firfircoon ee nuugista fluoride.
Waxaa jira suurtogalnimo ah in aayoon kale ay farageliyaan habka nuugista marka ay la shaqeynayaan alumina firfircoon, tani waxay sabab u tahay biyaha ku jira Mareykanka oo ay ku jiraan aayoon kale. Aayoonyadan badanaa waa sodium chloride, sodium sulfate, iyo sodium bicarbonate. Sodium chloride iyo sodium sulfate ma farageliyaan habka nuugista, laakiin sodium bicarbonate waxay yareyn kartaa awoodda alumina firfircoon inta u dhaxaysa 33% iyo 70%.
Alumina-da firfircoon sida inta badan kuwa qalalan ayaa dib loo soo noolayn karaa. Sodium hydroxide, aluminium sulfate, ama sulfuric acid ayaa lagu shubaa xal liye ah oo leh alumina-da firfircoon, taasoo u oggolaanaysa nuugaha in dib loo soo nooleeyo. Marka dib loo soo nooleeyo alumina-da firfircoon waxay sii wadi kartaa in dib loo isticmaalo, marka si habboon loo isticmaalo alumina-da firfircoon waxay socon kartaa sannado.
Alumina-da firfircoon ayaa lagama maarmaan u ah in laga saaro fluoride-ka biyaha ilaa 99% iyo in biyaha laga dhigo kuwo ammaan ah oo dadku ay cabi karaan.
Waqtiga boostada: Agoosto-05-2019