Imishini yokuhlanza amanzi angcolile ye-Electro-Fenton ngokuyinhloko isekelwe ezimisweni ze-Fenton catalytic oxidation, emele inqubo ye-oxidation ethuthukisiwe esetshenziselwa ukuwohloka nokwelashwa kwamanzi angcolile agcwele kakhulu, anobuthi, nangokwemvelo.
Indlela ye-Fenton reagent yasungulwa usosayensi ongumFulentshi u-Fenton ngo-1894. Umongo wokusabela kwe-Fenton reagent isizukulwane esinamandla sama-hydroxyl radicals (•OH) kusukela ku-H2O2 phambi kwe-Fe2+. Ucwaningo ngobuchwepheshe be-electro-Fenton lwaqala ngeminyaka yawo-1980 njengendlela yokunqoba imikhawulo yezindlela ze-Fenton zendabuko kanye nokuthuthukisa ukusebenza kahle kokwelashwa kwamanzi. Ubuchwepheshe be-Electro-Fenton buhilela ukukhiqizwa okuqhubekayo kwe-Fe2+ ne-H2O2 ngokusebenzisa izindlela ze-electrochemical, kokubili kusabela ngokushesha ukuze kukhiqizwe ama-radicals e-hydroxyl asebenza kakhulu, okuholela ekulimazeni kwezinhlanganisela eziphilayo.
Empeleni, ikhiqiza ngokuqondile ama-Fenton reagents ngesikhathi senqubo ye-electrolysis. Isimiso esiyisisekelo sokusabela kwe-electro-Fenton ukuhlakazeka komoyampilo phezu kwento efanelekile ye-cathode, okuholela ekukhiqizeni i-electrochemical peroxide (H2O2). I-H2O2 ekhiqiziwe ingase isabele nge-Fe2+ catalyst esixazululweni sokukhiqiza i-ejenti enamandla yokwenza i-oxidizing, i-hydroxyl radicals (•OH), ngokusabela kwe-Fenton. Ukukhiqizwa kwe-•OH ngenqubo ye-electro-Fenton kuqinisekiswe ngokuhlolwa kwe-chemical probe nezindlela ze-spectroscopic, ezifana ne-spin trapping. Ezinhlelweni ezingokoqobo, ikhono le-oxidation eliqinile elingakhethi •OH liyasetshenziswa ukuze kususwe ngempumelelo izinhlanganisela eziphilayo ezilahliwe.
O2 + 2H+ + 2e → H2O2;
H2O2 + Fe2+ → [Fe(OH)2]2+ → Fe3+ + •OH + OH-.
Ubuchwepheshe be-Electro-Fenton busebenza ngokuyinhloko ekwelashweni kwangaphambili kwe-leachate evela endaweni yokulahla indle, uketshezi olugxilile, namanzi angcolile ezimbonini avela ezimbonini ezinjengamakhemikhali, ezemithi, izibulala-zinambuzane, ukudaya, izindwangu, kanye ne-electroplating. Ingasetshenziswa ngokuhambisana nemishini ye-electrocatalytic advanced oxidation ukuze kuthuthukiswe ngokuphawulekayo ukubola kwamanzi angcolile ngenkathi kususwa i-CODCr. Ukwengeza, isetshenziselwa ukwelashwa okujulile kokuvuza okuphuma endaweni yokulahla udoti, uketshezi olugxilile, namanzi angcolile ezimbonini asuka kumakhemikhali, imithi, izibulala-zinambuzane, ukudaya, izindwangu, i-electroplating, njll., kunciphisa ngokuqondile i-CODCr ukuze ihlangabezane nezindinganiso zokulahla. Ingabuye ihlanganiswe “nemishini ye-electro-Fenton epulsed” ukunciphisa izindleko zokusebenza sezizonke.
Isikhathi sokuthumela: Sep-07-2023
