Imishini yokwelapha amanzi amdaka ye-Electro-Fenton isekelwe kakhulu ezimisweni ze-Fenton catalytic oxidation, emele inqubo ethuthukisiwe ye-oxidation esetshenziselwa ukwehlisa nokwelapha amanzi amdaka anokuhlushwa okuphezulu, anobuthi, kanye nemvelo.
Indlela ye-Fenton reagent yasungulwa usosayensi waseFrance uFenton ngo-1894. Ingqikithi ye-Fenton reagent reaction ukukhiqizwa kwe-catalytic kwama-hydroxyl radicals (•OH) avela ku-H2O2 phambi kwe-Fe2+. Ucwaningo ngobuchwepheshe be-electro-Fenton lwaqala ngawo-1980 njengendlela yokunqoba ukulinganiselwa kwezindlela zendabuko ze-Fenton nokuthuthukisa ukusebenza kahle kokwelashwa kwamanzi. Ubuchwepheshe be-Electro-Fenton buhilela ukukhiqizwa okuqhubekayo kwe-Fe2+ kanye ne-H2O2 ngezindlela ze-electrochemical, kokubili kusabela ngokushesha ekukhiqizeni ama-hydroxyl radicals asebenzayo kakhulu, okuholela ekuwohlokeni kwamakhemikhali e-organic.
Empeleni, ikhiqiza ngqo ama-reagent e-Fenton ngesikhathi senqubo ye-electrolysis. Isimiso esiyisisekelo sokusabela kwe-electro-Fenton ukuncibilika komoya-mpilo ebusweni bento efanelekile ye-cathode, okuholela ekukhiqizweni kwe-hydrogen peroxide (H2O2) nge-electrochemical. I-H2O2 ekhiqizwayo ingabe isasabela nge-Fe2+ catalyst esixazululweni ukuze ikhiqize i-agent enamandla yokuxilisa, ama-hydroxyl radicals (•OH), ngokusebenzisa ukusabela kwe-Fenton. Ukukhiqizwa kwe-•OH ngenqubo ye-electro-Fenton kuqinisekiswe ngokuhlolwa kwe-chemical probe kanye namasu e-spectroscopic, njengokudonsa nge-spin. Ezisetshenzisweni ezisebenzayo, ikhono le-oxidation elinamandla elingakhethi le-•OH lisetshenziswa ukususa ngempumelelo ama-recalcitrant organic compounds.
O2 + 2H+ + 2e → H2O2;
H2O2 + Fe2+ → [Fe(OH)2]2+ → Fe3+ + •OH + OH-.
Ubuchwepheshe be-Electro-Fenton busebenza kakhulu ekuphathweni kwe-leachate ngaphambi kokulahla udoti, uketshezi oluhlanganisiwe, kanye namanzi angcolile ezimbonini ezifana namakhemikhali, ezemithi, izibulala-zinambuzane, ukudaya, indwangu, kanye ne-electroplating. Bungasetshenziswa kanye nemishini ye-electrocatalytic advanced oxidation ukuze kuthuthukiswe kakhulu ukubola kwamanzi angcolile ngenkathi kususwa i-CODCr. Ngaphezu kwalokho, busetshenziselwa ukwelashwa okujulile kwe-leachate kusuka endaweni yokulahla udoti, uketshezi oluhlanganisiwe, kanye namanzi angcolile ezimbonini avela kumakhemikhali, ezemithi, izibulala-zinambuzane, ukudaya, indwangu, i-electroplating, njll., kunciphisa ngqo i-CODCr ukuze ihlangabezane nezindinganiso zokukhipha. Bungaphinde buhlanganiswe "nemishini ye-electro-Fenton eqhutshwayo" ukuze kuncishiswe izindleko zokusebenza eziphelele.
Isikhathi sokuthunyelwe: Septhemba-07-2023
