The objective of this research was to study the transport properties of copper and nickel through the fumasep FKB-PK-130 cation exchange membrane using chronopotentiometry. The membrane’s conductive area was calculated in an aqueous solution of KCl 0.025 M, obtaining an value of 0.904, corresponding to a homogenous ion exchange membrane. The transport numbers of copper and nickel ions in the cation exchange membrane were measured as 0.966 and 0.923, respectively.

The response surface methodology was applied to evaluate the optimal experimental conditions to remove persistent organic compounds from a synthetic textile wastewater using a batch photochemical reactor on a laboratory scale. Four factors at three levels were studied: Fenton H2O2/Fe2+ reagent ratio (11,25, 18,75, 26,25 mg/L/mg/L), UV lamp power (4, 11, 18 W), pH (2, 3, 4) and treatment time (60, 120, 180 min). The optimum levels found for the four factors were: ratio of Fenton H2O2/Fe2+ reagents equal to 17 mg/L/mg/L, UV lamp power equal to 4 W, pH equal to 3 and treatment time of 180 min. It was found that the photo- Fenton process is very effective in treating synthetic textile wastewater, with a removal of 86 %, with respect to COD.