Polish Journal of Environmental Studies · 2006 · 21 citations · 2 references
EngineeringChemical EngineeringEnvironmental EngineeringInorganic ChemistryWastewater TreatmentWater TreatmentChemical OxidationIndustrial Wastewater TreatmentOxidation-reduction ReactionsWaste TreatmentWastewater ChemistryWastewater ManagementChemical Reaction MechanismsManganese ChemistryManganese Redox ChemistryManganese RemovalOrganic Pollutant DegradationOxidation Processes
Oneofthemethodsofdetoxificationofsulphidesinwastewater� (WW)� oftanneriescouldbetheir� oxidationbyuseofMnO 2 . this material, as well as the product of the chemical reaction between sulphides andthismaterialisnotleftinWWanddoesnotpolluteit. TheamountofsulphidesandthepHofsolutionhaveaninfluenceonoxidationprocessduration;�it� islongerwhenthesulphideamountandpHintheWWishigher.�Optimaltemperatureofthetreatmentis� 30°c. oxidation goes faster if the size of Mno 2�� particlesdoesnotexceed�0.1�mm. ThepossibilitiesofrepeateduseofMnO 2 �wereinvestigated.�ThestableefficiencyoftheMnO 2 �couldbe� obtained by putting at first 0.5% of Mno 2� and additionally 0.05% of Mno 2 �ofthesolutionmassforevery� followingcycleofthetreatment.
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