The purpose of this study is the electrochemical treatment of a solution of textile colouring agent to know the methylene blue. The studied solution of methylene blue was prepared for the laboratory in a concentration of 0,5 g/L, from the colouring agent powder and not cleansed methylene blue. The prepared solution is neutral, (pH = 7,2); his conductivity of the order of 3,23 mS/cm while the turbidity is of the order of 91,8 NTU. The absorbance measured in a length of wave maximal 660 nm and of the order of 1,856.
In the first part we made a treatment(processing) of the colouring agent by electrochemical way in a reactor of capacity 5 liters, in an intensity of 5 In and a tension of 15 V, for the temperature of 30
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