Author(s): Borralho, Teresa
Date: 2019
Persistent ID: http://hdl.handle.net/20.500.12207/5127
Origin: Repositório Institucional do IPBeja
Subject(s): Potassium monopersulfate; Chemical oxidation; Chemical Oxygen Demand; Wastewater from biodiesel purification
The production of biodiesel produces a highly polluting effluent, because presents high values of Chemical Oxygen Demand (COD), oils and fats, among other contaminants. Sodium persulphate is a powerful oxidant (Eº = 2.1V). In addition to the direct oxidation that is favored in alkaline media, it can be induced by photolytic processes, catalytic and / or catalytic photos forming sulphate radicals (Eº = 2.6 V) thus providing reaction mechanisms with free radicals like hydroxyl radicals.
