Hoʻokumu mua ʻia nā mea hana hoʻomaʻemaʻe wai Electro-Fenton ma luna o nā loina o Fenton catalytic oxidation, e hōʻike ana i kahi kaʻina hana hoʻoheheʻe kiʻekiʻe i hoʻohana ʻia no ka hoʻohaʻahaʻa a me ka mālama ʻana i ka wai hoʻoneʻe kiʻekiʻe.
Ua hoʻokumu ʻia ke ʻano hana reagent Fenton e ka ʻepekema Farani Fenton i ka makahiki 1894. ʻO ke kumu o ka hopena reagent Fenton ʻo ia ka hana catalytic o nā radical hydroxyl (•OH) mai H2O2 i mua o Fe2+. Ua hoʻomaka ka noiʻi e pili ana i ka ʻenehana electro-Fenton i ka makahiki 1980 ma ke ʻano he ala e lanakila ai i nā palena o nā hana Fenton kuʻuna a hoʻonui i ka pono o ka mālama wai. Hoʻokomo ka ʻenehana Electro-Fenton i ka hana mau ʻana o Fe2+ a me H2O2 ma o nā ʻano electrochemical, me ka pane koke ʻana o lāua ʻelua e hoʻoulu i nā radical hydroxyl ikaika loa, e alakaʻi ana i ka hōʻino ʻana o nā pūhui organik.
ʻO ka mea nui, hoʻopuka pololei ia i nā reagents Fenton i ka wā o ke kaʻina electrolysis. ʻO ke kumu kumu o ka hopena electro-Fenton ʻo ka hoʻoheheʻe ʻana o ka oxygen ma ka ʻili o kahi mea cathode kūpono, e alakaʻi ana i ka hanauna electrochemical o hydrogen peroxide (H2O2). Hiki i ka H2O2 i hana 'ia ke hana me ka Fe2+ catalyst i loko o ka ho'ohehe'e no ka hana 'ana i mea ho'okahe ikaika, hydroxyl radicals (•OH), ma o ka pane Fenton. Ua hōʻoia ʻia ka hana ʻana o •OH ma o ke kaʻina hana electro-Fenton ma o ka hoʻāʻo ʻana kemika a me nā ʻenehana spectroscopic, e like me ka wili ʻana. Ma nā hoʻohana pono, hoʻohana ʻia ka hiki ʻole o ka oxidation ikaika o •OH no ka hoʻopau pono ʻana i nā pūhui organik recalcitrant.
O2 + 2H+ + 2e → H2O2;
H2O2 + Fe2+ → [Fe(OH)2]2+ → Fe3+ + •OH + OH-.
Hoʻohana nui ʻia ka ʻenehana Electro-Fenton i ka hoʻomaʻamaʻa mua ʻana o ka leachate mai ka pae ʻāina, nā wai i hoʻopaʻa ʻia, a me nā wai ʻino mai nā ʻoihana e like me ke kemika, lāʻau lapaʻau, pesticide, dyeing, textile, a me electroplating. Hiki ke hoʻohana pū me ka electrocatalytic advanced oxidation lako e hoʻomaikaʻi nui i ka biodegradability o ka wai ʻino i ka wā e wehe ana i ka CODCr. Hoʻohui ʻia, hoʻohana ʻia ia no ka mālama hohonu ʻana i ka leachate mai ka ʻāina, nā wai i hoʻopaʻa ʻia, a me ka wai ʻino mai nā kemika, pharmaceutical, pesticide, dyeing, textile, electroplating, etc. Hiki ke hoʻohui pū ʻia me ka "pulsed electro-Fenton lako" e hōʻemi i nā koina hana holoʻokoʻa.
Ka manawa hoʻouna: Sep-07-2023
