CERISOLA , Giacomo

The electrochemical characterization of aluminium nnodes containing different intermetallic compounds in 3% sodium chloride and 0.3% radium sulphate aqueous solutions was carried out by means of d.c. measurements. The case of some Ca-Zn. CL-In and Al-Mg-Zn inlermelallic compound!. in Ihe aluminium malrix was examined. SEM and EDAX analyses were...

e electrochemical and corrosion behaviour of Al-Mg-Zn alloys in 3% sodium chloride and 0.3% sodium sulphate aqueous solution was studied, by means of dc and UCmeasurements at different polarization conditions. SEM and EDAX analysis were employed in order to characterize the surface structure of the above alloys. The relationship between...

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A metallurgical investigation of Al–Zn–Mg alloys (Al90Mg5Zn5 and Al95Mg2.5Zn2.5) showed the existence of an aluminium based solid solution and an intermetallic phase finely dispersed in the aluminium matrix. The study of the alloy structure using SEM, TEM, EDX and AES showed that, in both the alloys, the alloy matrix was an aluminium a-solid...

Aluminium alloys are successfully used in several technological applications. Aluminium itself has weak mechanical properties, hence it is alloyed with other elements and thermally treated to improve and tailor its characteristics. These processes remarkably change the original structure of Al from a homogeneous solid solution to a complex...

This study was performed to investigate the treatment of an industrial wastewater mainly containing naphthalene- and anthraquinone-sulphonic acids, by electrogenerated Fenton's reagent. The hydrogen peroxide was produced in situ by electrochemical reduction of oxygen on graphite-felt cathodes and the Fe2+ ions were also regenerated by cathodic...

Different variables can influence the crack-bridging ability (CBA) of a coating. These parameters can be related to: (i) the substrate, i.e. the way the crack opens and develops in the concrete; (ii) the substrate/coating interface, i.e. the adhesion of the organic coating to the concrete; (iii) the coating, i.e. its thickness and mechanical...

Olive mill wastewater is characterized by very high chemical oxygen demand (COD) values and contains high concentrations of polyphenols that inhibit the activity of microorganisms during biological oxidations. In this paper, the applicability of electrochemical oxidation of a real olive-mill wastewater was studied by performing galvanostatic...

The electrocatalytic properties of Ti-Ru-Sn ternary oxide, platinum, lead dioxide and boron-doped diamond anodes for the oxidation of methyl red have been compared by potentiodynamic measurements and bulk electrolysis. The results of the cyclic voltammetries have shown that in the potential region of supporting electrolyte stability polymeric...

The electrogeneration of hydrogen peroxide in solution with low ionic strength using a gas diffusion cathode fed with air was investigated by linear sweep voltammetries and bulk electrolyses. The effect of applied current (15–45mAcm−2), solution pH (4–10), temperature (15–60 ◦C) and cell configuration (divided or undivided) on the H2O2...

The electrochemical oxidation of 2-naphthol mediated by active chlorine electrogenerated in situ on a Ti_/Ru_/Sn ternary oxide has been studied by galvanostatic electrolysis under different experimental conditions. Measurements of chemical oxygen demand COD), HPLC and GC analyses have been used to follow the oxidation. In the absence of NaCl,...

The electrochemical oxidation of 2-naphthol has been studied by galvanostatic electrolysis, using a range of electrode materials such as lead dioxide, boron-doped diamond (BDD) and Ti–Ru–Sn ternary oxide anodes. The influence of some operating parameters, such as current density, flow-rate and chloride concentration on naphthol oxidation has...

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The crack-bridging properties of different organic coatings have been studied over a range of thicknesses and applied temperatures. In each case the data allowed to determine linear relationships between crack-bridging ability (CBA) and coating thickness. In addition, a direct correlation between crack bridging ability and elongation at break...

The anodic oxidation of a real carwash wastewater has been comparatively studied using lead dioxide (PbO2) and boron-doped diamond (BDD) anodes in an electrolytic flow cell. The influence of several operating parameters such as current (from 1A to 3A), liquid flow rate (from 100 to 300 dm3 h-1) and temperature (25 °C and 40 °C) on the...

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Conducting diamond thin film is a new electrode material that has received great attention recently because it possesses several technologically important characteristics such as an inert surface with low adsorption properties, remarkable corrosion stability, even in strong acidic media, and an extremely wide potential window in aqueous and...

Literature results summarized in this review show that there are two main strategies for anodic oxidation of organic compounds. The first is to perform electrolysis at a high anodic potential in the region of water discharge, with the participation of intermediates of electrogenerated hydroxyl radicals. The nature of electrode material strongly...

In this work a combined two-step process consisting in the electrochemical coagulation with iron anodes and the electrochemical oxidation with boron-doped diamond anode (BDD) was developed for the treatment of a real carwash wastewater. The effects of important operating parameters such as current density, electrolysis time and pH on the...

Electrochemical oxidation of synthetic wastewater containing acid blue 22 on a boron-doped diamond electrode (BDD) was studied, using cyclic voltammetry and bulk electrolysis. The influence of current density, dye concentration, flow rate, and temperature was investigated, in order to find the best conditions for COD and colour removal. It was...

The electrocatalytic properties of lead dioxide (PbO2) and boron-doped diamond (BDD) anodes were compared for the electrochemical incineration of methyl red, an azo dye, using an electrolytic flow cell with parallel- plate electrodes. The effects of several operating parameters such as current density, hydrodynamic conditions, and pH on the...

The main properties of a protective coating for concrete and reinforced concrete structures are discussed. The importance of evaluating water and water vapour permeability is highlighted. Two new methods for testing water and water vapour permeability of protective coatings are presented. The reliability of these tests is studied. The proposed...

The electrochemical oxidation of an industrial wastewater containing aromatic sulphonated acids on a boron-doped diamond electrode (BDD) was studied using cyclic voltammetry and bulk electrolysis. The influence of the current density and flow-rate was investigated in order to find the optimum conditions. It was found that a polymeric film,...

The electrochemical oxidation of gallic acid (3,4,5-trihydroxybenzoic acid) has been studied on a boron-doped diamond anode (BDD). Cyclic voltammetries, chronoamperometries and bulk electrolyses were performed to characterise the electrochemical behaviour of gallic acid on diamond-type anode and to study the kinetics of gallic acid degradation....