Ngwá ọrụ ọgwụgwọ mmiri mmiri Electro-Fenton dabere na ụkpụrụ nke Fenton catalytic oxidation, na-anọchite anya usoro oxidation dị elu nke ejiri mee ihe maka mmebi na ọgwụgwọ nke nnukwu itinye uche, nsị na mmiri ahịhịa.
Onye ọkà mmụta sayensị France bụ Fenton chepụtara usoro Fenton reagent na 1894. Ihe kachasị mkpa nke mmeghachi omume Fenton reagent bụ ọgbọ nke hydroxyl radicals (•OH) sitere na H2O2 n'ihu Fe2+. Nnyocha na teknụzụ electro-Fenton malitere na 1980 dị ka ụzọ isi merie njedebe nke ụzọ Fenton omenala ma kwalite ịrụ ọrụ ọgwụgwọ mmiri. Teknụzụ Electro-Fenton gụnyere mmepụta Fe2 + na H2O2 na-aga n'ihu site na ụzọ electrochemical, na-emeghachi omume ozugbo iji mepụta radical hydroxyl na-arụ ọrụ nke ukwuu, na-eduga n'emebi nke ogige organic.
N'ezie, ọ na-emepụta Fenton reagents ozugbo n'oge usoro electrolysis. Ụkpụrụ bụ isi nke mmeghachi omume electro-Fenton bụ mgbasa nke oxygen n'elu ihe cathode kwesịrị ekwesị, na-eduga na ọgbọ electrochemical nke hydrogen peroxide (H2O2). H2O2 emepụtara nwere ike meghachi omume na Fe2 + catalyst na ngwọta iji mepụta onye na-eme ihe na-eme ka ọ dị ike, hydroxyl radicals (•OH), site na mmeghachi omume Fenton. Achọpụtala mmepụta nke • OH site na usoro electro-Fenton site na nyocha nyocha kemịkalụ na usoro spectroscopic, dị ka ọnyà ọkpụkpụ. N'ime ngwa bara uru, ikike oxidation siri ike nke na-abụghị nhọrọ nke • OH na-erigbu iji wepu ogige organic recalcitrant nke ọma.
O2 + 2H+ + 2e → H2O2;
H2O2 + Fe2+ → [Fe(OH)2]2+ → Fe3+ •OH + OH-.
Teknụzụ Electro-Fenton bụ nke a na-etinye n'ọrụ na pretreatment nke leachate sitere na mkpofu ahịhịa, mmiri mmiri gbadoro anya, na mmiri mkpofu ụlọ ọrụ sitere na ụlọ ọrụ dị ka kemịkalụ, ọgwụ, pesticide, ịjiji, textile na electroplating. Enwere ike iji ya na ngwa oxidation dị elu nke electrocatalytic iji meziwanye biodegradability nke mmiri mkpofu mgbe ị na-ewepụ CODCR. Na mgbakwunye, a na-eji ya maka ọgwụgwọ miri emi nke leachate sitere na mkpofu ahịhịa, mmiri mmiri gbadoro anya, na mmiri mkpofu ụlọ ọrụ sitere na kemịkalụ, ọgwụ, pesticide, agba, textile, electroplating, wdg, na-ebelata CODCR ozugbo iji mezuo ụkpụrụ mwepụ. Enwere ike ijikọ ya na “ akụrụngwa electro-Fenton pulsed” iji belata ụgwọ ọrụ n'ozuzu ya.
Oge nzipu: Sep-07-2023
