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The liquid residues derived from washing cv Atlantic potatoes preparing for the production of chips and shoestring in the Cicopal Ltda Company (Senador Canedo-GO) were

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In this work, a heterogeneous catalytic wet peroxide process combining activated carbon (AC) and hydrogen peroxide (H 2 O 2 )/ultraviolet radiation was applied for the aqueous-phase removal of phenol. The influence of the pH and peroxide concentration were determined according to a factorial plan. The kinetic contribution of radical mechanisms (d HO8 ) was estimated using a radical scavenger (tert-butyl alcohol). The degradation kinetics was modelled by a global pseudo-first-order kinetic model based on the sum of the effects during the treatment process. The results showed that these two variables significantly affected the percentage removal. The peroxide concentration exerted a positive effect (i.e., as the H 2 O 2 concentration increased, the percentage removal also increased). Additionally, as the pH value increased, the degradation accelerated, and the kinetic constant (k homogeneous ) increased from 0.00938 min À1 to 0.02772 min À1 . The results obtained in the presence of AC demonstrated the ability of AC to ameliorate the degradation of phenol; for example, d heterogeneous was 45.69 % to 41.35 %.

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