Izixhobo zokucoca amanzi amdaka e-Electro-Fenton zisekelwe ikakhulu kwimigaqo ye-Fenton catalytic oxidation, emele inkqubo ye-oxidation ephezulu esetyenziselwa ukuthotywa kunye nokunyangwa kwamanzi amdaka aphezulu, anetyhefu, kunye ne-organic.
Indlela ye-Fenton reagent yaqanjwa sisazinzulu saseFransi u-Fenton ngo-1894. Undoqo we-Fenton reagent reaction sisesona siphumo se-catalytic ye-hydroxyl radicals (•OH) ukusuka kwi-H2O2 kubukho be-Fe2+. Uphando kwitekhnoloji ye-electro-Fenton yaqala ngeminyaka yoo-1980 njengendlela yokoyisa imida yeendlela zeFenton zemveli kunye nokuphucula ukusebenza kakuhle kokucocwa kwamanzi. Iteknoloji ye-Electro-Fenton ibandakanya ukuveliswa okuqhubekayo kwe-Fe2 + kunye ne-H2O2 ngeendlela ze-electrochemical, zombini zisabela ngokukhawuleza ukuvelisa i-hydroxyl radicals esebenzayo kakhulu, ekhokelela ekuthotyweni kwezinto eziphilayo.
Ngokusisiseko, ivelisa ngokuthe ngqo ii-reagents ze-Fenton ngexesha lenkqubo ye-electrolysis. Umgaqo-siseko we-electro-Fenton reaction kukutshatyalaliswa kwe-oksijini phezu kwendawo efanelekileyo ye-cathode, ekhokelela kwisizukulwana se-electrochemical ye-hydrogen peroxide (H2O2). I-H2O2 eveliswayo inokusabela emva koko nge-Fe2 + i-catalyst kwisisombululo sokuvelisa i-agent enamandla ye-oxidizing, i-hydroxyl radicals (• OH), ngokusebenzisa i-Fenton reaction. Ukuveliswa kwe-OH ngenkqubo ye-electro-Fenton iqinisekisiwe ngovavanyo lweekhemikhali zeprobe kunye neendlela ze-spectroscopic, ezifana ne-spin trapping. Kwizicelo ezisebenzayo, i-non-elective strong oxidation potential of •OH isetyenziselwa ukususa ngokufanelekileyo i-recalcitrant organic compounds.
O2 + 2H+ + 2e → H2O2;
H2O2 + Fe2+ → [Fe(OH)2]2+ → Fe3+ + •OH + OH-.
Itekhnoloji ye-Electro-Fenton isetyenziswa ikakhulu kunyango lwangaphambili lwe-leachate evela kwitiphu, ulwelo olugxininisiweyo, kunye namanzi amdaka avela kwimizi-mveliso asuka kumashishini afana neekhemikhali, amayeza, isibulali-zinambuzane, ukudaya, amalaphu, kunye ne-electroplating. Ingasetyenziswa ngokudityaniswa nezixhobo ze-electrocatalytic advanced oxidation ukuze kuphuculwe ngokubonakalayo ukubola kwe-biodegradability yamanzi amdaka ngelixa kususwa i-CODCr. Ukongeza, isetyenziselwa unyango olunzulu lwenkunkuma ephuma kwindawo yokulahla inkunkuma, ulwelo olugxininisiweyo, kunye namanzi amdaka avela kwimizi-mveliso asuka kwikhemikhali, amayeza, isibulali-zinambuzane, ukudaya, amalaphu, i-electroplating, njl.njl., ukunciphisa ngokuthe ngqo i-CODCr ukuhlangabezana nemigangatho yokukhupha. Inokuthi idityaniswe "nezixhobo ze-electro-Fenton" ukunciphisa iindleko zokusebenza ngokubanzi.
Ixesha lokuposa: Sep-07-2023
