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This work reports on the process of phenol electrooxidation, which is carried-out through continuous electrolysis of synthetic, sodium sulphate-based wastewater. Phenol electrodegradation is examined by means of a laboratory size (ca. 700 cm³ of working volume), poly (methyl methacrylate)-made electrolyser unit for various, carbon fi bre and graphite-based anode configurations, and stainless steel cathodes, two different current-densities and concentrations of phenol in synthetically prepared wastewater solution. Proper monitoring of phenol degradation (including quantitative identification of reaction products and calculation of specific energy consumption) in wastewater is performed by means of instrumental, combined HPLC and MS technique in function of electrolysis time. [ABSTRACT FROM AUTHOR]

In presented article the polymer-modifi ed cement mortars with expanded graphite covered by the oligomer fi lm, being a by-product of phenol electro-oxidation, were investigated. The changes in the morphology of EG and EG/oligomer as well as in the microstructure of cement-polymer composites modifi ed with EG/oligomer were verifi ed using the scanning electron microscopy (SEM). The evaluation of adhesion between EG/oligomer and cementpolymer mortar based on the mechanical tests, especially their fl exural behavior. It was shown that the oligomer fi lm formed on EG surface made graphite fl akes more durable and resistant to bending. Moreover, the oligomer due to the interaction with polymer network in cement-polymer mortar led to the improvement of fl exural toughness of composite. [ABSTRACT FROM AUTHOR]

This work reports on kinetics of phenol electrooxidation reaction (PhER), examined at polycrystalline Pt electrode in 0.5 M H2SO4 and 0.1 M NaOH supporting solutions. Important aspects of PhER kinetics were analysed based on potential-dependent, a.c. impedance-derived values of charge-transfer resistance and capacitance parameters. Special attention was also given to the infl uence of supporting electrolyte ions on the process of phenol oxidation (pH dependence of the PhER), in relation to an important role of anion adsorption on the Pt catalyst surface. [ABSTRACT FROM AUTHOR]