A cikin faffadar ma'ana, iskar oxygen da iskar shaka tana nufin gaba dayan tsari na electrochemistry, wanda ya kunshi kai tsaye ko kaikaice halayen electrochemical da ke faruwa a cikin lantarki bisa ka'idojin oxidation-rage halayen. Waɗannan halayen suna nufin ragewa ko cire gurɓataccen ruwa daga ruwan sharar gida.
A kunkuntar ma'anar, electrochemical oxidation musamman yana nufin tsarin anodic. A cikin wannan tsari, an shigar da maganin kwayoyin halitta ko dakatarwa a cikin kwayar halitta ta electrolytic, kuma ta hanyar aikace-aikacen kai tsaye, ana fitar da electrons a cikin anode, wanda zai haifar da oxidation na kwayoyin halitta. A madadin, ƙananan ƙananan ƙarfe na iya zama oxidized zuwa ions ƙarfe masu girma a cikin anode, wanda ke shiga cikin oxidation na mahadi. Yawanci, wasu ƙungiyoyin aiki a cikin mahaɗan kwayoyin halitta suna nuna ayyukan lantarki. A ƙarƙashin tasirin wutar lantarki, tsarin waɗannan ƙungiyoyi masu aiki yana fuskantar canje-canje, canza halayen sinadarai na mahaɗan kwayoyin halitta, rage yawan gubarsu, da haɓaka haɓakarsu.
Electrochemical oxidation za a iya kasasu kashi biyu: kai tsaye hadawan abu da iskar shaka da kuma kaikaice oxidation. Kai tsaye oxidation (kai tsaye electrolysis) ya ƙunshi kai tsaye cire gurɓata daga ruwan sharar gida ta hanyar oxidizing su a cikin lantarki. Wannan tsari ya ƙunshi duka anodic da cathodic matakai. Tsarin anodic ya ƙunshi oxidation na gurɓataccen abu a saman anode, yana mai da su cikin abubuwa marasa guba ko abubuwan da suka fi girma, ta haka ragewa ko kawar da gurɓataccen abu. Tsarin cathodic ya ƙunshi rage gurɓataccen gurɓataccen abu a saman cathode kuma ana amfani dashi da farko don ragewa da kawar da halogenated hydrocarbons da dawo da karafa masu nauyi.
Hakanan ana iya kiran tsarin cathodic azaman raguwar electrochemical. Ya ƙunshi canja wurin electrons don rage nauyin ions masu nauyi kamar Cr6+ da Hg2+ zuwa cikin ƙananan jihohin oxidation. Bugu da ƙari, yana iya rage mahadi na chlorinated, canza su zuwa ƙananan abubuwa masu guba ko marasa guba, a ƙarshe yana haɓaka haɓakar halittun su:
R-Cl + H+ + e → RH + Cl-
Iskar iskar shaka ta kai tsaye (electrolysis kai tsaye) ya ƙunshi amfani da electrochemically haifar da oxidizing ko rage jamiái a matsayin reactants ko kara kuzari maida pollutants zuwa kasa mai guba abubuwa. Za a iya ƙara rarraba electrolysis na kai tsaye zuwa hanyoyin da ba za a iya jurewa ba. Matakan juyewa (tsakanin oxidation electrochemical) sun haɗa da sabuntawa da sake yin amfani da nau'in redox yayin aikin lantarki. Hanyoyin da ba za a iya jurewa ba, a gefe guda, suna amfani da abubuwan da aka haifar daga halayen electrochemical wanda ba za a iya jurewa ba, irin su masu karfi mai karfi kamar Cl2, chlorates, hypochlorites, H2O2, da O3, don oxidize mahadi. Hanyoyin da ba za a iya jurewa ba na iya haifar da tsaka-tsakin tsaka-tsakin oxidative, ciki har da solvated electrons, · HO radicals, · HO2 radicals (hydroperoxyl radicals), da · O2-radicals (superoxide anions), wanda za a iya amfani dashi don ragewa da kawar da gurɓataccen abu kamar cyanide, phenols, COD (Chemical Oxygen Demand), da S2-ions, a ƙarshe yana canza su zuwa abubuwa marasa lahani.
A cikin hali na kai tsaye anodic hadawan abu da iskar shaka, low reactant yawa na iya iyakance electrochemical surface dauki saboda taro canja wurin gazawar, alhãli kuwa wannan iyakance ba ya wanzu ga kai tsaye hadawan abu da iskar shaka matakai. A lokacin duka kai tsaye da kuma kaikaice matakai na hadawan abu da iskar shaka, gefe halayen da suka shafi samar da H2 ko O2 gas na iya faruwa, amma wadannan gefen halayen za a iya sarrafawa ta hanyar zabi na lantarki kayan da m iko.
Electrochemical oxidation an gano yana da tasiri don magance ruwa mai datti tare da yawan adadin kwayoyin halitta, hadaddun abubuwa, ɗimbin abubuwa masu raɗaɗi, da manyan launi. Ta hanyar amfani da anodes tare da ayyukan electrochemical, wannan fasaha na iya samar da ingantaccen radicals oxidative. Wannan tsari yana haifar da rugujewar gurɓataccen gurɓataccen ƙwayar cuta zuwa abubuwan da ba su da guba, abubuwan da ba za su iya rayuwa ba da cikakkiyar ma'adinan su zuwa mahadi kamar carbon dioxide ko carbonates.
Lokacin aikawa: Satumba-07-2023
