Hoʻokumu nui ʻia nā lako hana hoʻomaʻemaʻe wai ʻino Electro-Fenton ma nā kumumanaʻo o ka oxidation catalytic Fenton, e hōʻike ana i kahi kaʻina hana oxidation holomua i hoʻohana ʻia no ka hoʻohaʻahaʻa a me ka mālama ʻana i ka wai ʻino kiʻekiʻe, ʻawahia, a me nā mea olaola.
Ua hana ʻia ke ʻano hana reagent Fenton e ka ʻepekema Farani ʻo Fenton i ka makahiki 1894. ʻO ke kumu o ka hopena reagent Fenton ʻo ia ka hanauna catalytic o nā radical hydroxyl (•OH) mai H2O2 i ke alo o Fe2+. Ua hoʻomaka ka noiʻi ʻana ma ka ʻenehana electro-Fenton i nā makahiki 1980 ma ke ʻano he ala e lanakila ai i nā palena o nā ʻano hana Fenton kuʻuna a hoʻonui i ka pono o ka mālama ʻana i ka wai. Pili 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 nā mea ʻelua e hana i nā radical hydroxyl ikaika loa, e alakaʻi ana i ka hōʻino ʻana o nā hui organik.
ʻO ke kumu, hoʻopuka pololei ia i nā reagents Fenton i ka wā o ke kaʻina hana electrolysis. ʻO ke kumu nui o ka hopena electro-Fenton ʻo ia ka hoʻoheheʻe ʻia ʻana o ka oxygen ma luna o ka ʻili o kahi mea cathode kūpono, e alakaʻi ana i ka hanauna electrochemical o ka hydrogen peroxide (H2O2). A laila hiki i ka H2O2 i hana ʻia ke hana me ka mea hoʻoulu Fe2+ i loko o ka hopena e hana i kahi mea hoʻomake oxidizing ikaika, nā radical hydroxyl (•OH), ma o ka hopena Fenton. Ua hōʻoia ʻia ka hana ʻana o •OH ma o ke kaʻina hana electro-Fenton ma o nā hoʻokolohua probe kemika a me nā ʻano hana spectroscopic, e like me ka spin trapping. I nā noi hana, hoʻohana ʻia ka hiki ke hoʻomake oxidation ikaika ʻole o •OH e wehe pono i nā hui organik recalcitrant.
O2 + 2H+ + 2e → H2O2;
H2O2 + Fe2+ → [Fe(OH)2]2+ → Fe3+ + •OH + OH-.
Hoʻohana nui ʻia ka ʻenehana Electro-Fenton i ka mālama mua ʻana o ka leachate mai ka landfill, nā wai i hoʻopaʻa ʻia, a me nā wai ʻino ʻoihana mai nā ʻoihana e like me ke kemika, lāʻau lapaʻau, pesticide, dyeing, textile, a me ka electroplating. Hiki ke hoʻohana ʻia me nā lako oxidation holomua electrocatalytic e hoʻomaikaʻi nui i ka biodegradability o ka wai ʻino me ka wehe ʻana iā CODCr. Eia kekahi, hoʻohana ʻia no ka mālama hohonu ʻana i ka leachate mai ka landfill, nā wai i hoʻopaʻa ʻia, a me ka wai ʻino ʻoihana mai ke kemika, lāʻau lapaʻau, pesticide, dyeing, textile, electroplating, etc., e hōʻemi pololei ana i ka CODCr e hoʻokō i nā kūlana hoʻokuʻu. Hiki ke hoʻohui pū ʻia me nā "lako electro-Fenton pulsed" e hōʻemi i nā kumukūʻai hana holoʻokoʻa.
Ka manawa hoʻouna: Sep-07-2023
