Electro-Fenton zida zochizira madzi onyansa zimachokera ku mfundo za Fenton catalytic oxidation, zomwe zimayimira njira yowonjezereka ya okosijeni yomwe imagwiritsidwa ntchito pakuwononga ndi kuchiza madzi otayira kwambiri, apoizoni, ndi organic.
Njira ya Fenton reagent inapangidwa ndi wasayansi wa ku France Fenton mu 1894. Chofunika kwambiri cha Fenton reagent reaction ndi chothandizira cha hydroxyl radicals (• OH) kuchokera ku H2O2 pamaso pa Fe2 +. Kafukufuku waukadaulo wa electro-Fenton adayamba m'ma 1980 ngati njira yothanirana ndi malire a njira zachikhalidwe za Fenton ndikuwonjezera kuwongolera madzi. Tekinoloje ya Electro-Fenton imaphatikizapo kupanga kosalekeza kwa Fe2 + ndi H2O2 kudzera mu njira zamagetsi zamagetsi, ndipo zonse ziwiri zimachitapo kanthu kuti apange ma hydroxyl radicals, zomwe zimapangitsa kuwonongeka kwa zinthu zachilengedwe.
Kwenikweni, imapanga mwachindunji Fenton reagents panthawi ya electrolysis. Mfundo yofunika kwambiri ya electro-Fenton reaction ndi kusungunuka kwa mpweya pamwamba pa chinthu choyenera cha cathode, zomwe zimatsogolera ku electrochemical m'badwo wa hydrogen peroxide (H2O2). H2O2 yopangidwa imatha kuchitapo kanthu ndi Fe2 + chothandizira mu njira yopangira chothandizira oxidizing, hydroxyl radicals (• OH), kudzera mukuchita kwa Fenton. Kupanga kwa • OH kupyolera mu njira ya electro-Fenton kwatsimikiziridwa kupyolera mu mayesero a probe mankhwala ndi njira zowonetsera, monga spin trapping. Mu ntchito zothandiza, osasankha amphamvu makutidwe ndi okosijeni mphamvu ya • OH ntchito bwino kuchotsa recalcitrant organic mankhwala.
O2 + 2H+ + 2e → H2O2;
H2O2 + Fe2+ → [Fe(OH)2]2+ → Fe3+ + •OH + OH-.
Tekinoloje ya Electro-Fenton imagwira ntchito makamaka pakuchotsa zinyalala, zakumwa zodzaza, ndi madzi otayira m'mafakitale ochokera kumafakitale monga mankhwala, mankhwala, mankhwala ophera tizilombo, utoto, nsalu, ndi electroplating. Itha kugwiritsidwa ntchito molumikizana ndi zida za electrocatalytic advanced oxidation kuti ziwongolere bwino kuwonongeka kwamadzi onyansa ndikuchotsa CODCr. Kuonjezera apo, amagwiritsidwa ntchito pochiza zowonongeka kuchokera kumatope, zakumwa zoledzeretsa, ndi madzi otayira m'mafakitale ochokera ku mankhwala, mankhwala, mankhwala ophera tizilombo, utoto, nsalu, electroplating, ndi zina zotero, kuchepetsa mwachindunji CODCr kukwaniritsa miyezo yotulutsidwa. Itha kuphatikizidwanso ndi "zida zama electro-Fenton" kuti muchepetse ndalama zogwirira ntchito.
Nthawi yotumiza: Sep-07-2023
