Lucian Constantin

Conductive Polymer-Based Membranes

This review focuses on an important theme of conductive polymer domain: prepara‐ tion and applications of advanced materials with permselective properties, such as conductive polymer‐based membranes. The most common groups of conductive polymers, their particularities, their use in membranes preparation together with main specific obtaining methods/techniques and conductive polymer‐based membrane applications are presented based on a comprehensive documentary study.

Photosensitized Chlorobenzene Degradation by UV/H2O2 Oxidation

Abstract The degradation of chlorobenzene (CB) in UV/H2O2 system in aqueous solution, at pH 7, was studied. CB degradation was monitored by gas chromatography, Cl- liberation was monitored by ion chromatography at various irradiation times and a pseudo-first order kinetic in respect to both components was found. The rate constant kCl- was lower than kCB, which suggests that chlorinated intermediates are firstly formed by the attack of •OH radicals on CB, followed by chlorine liberation. When the CB concentration was kept constant we found a linear increase in the rate constants with H2O2 concentration, followed by a short interval with unmodified kI values and a decrease at higher H2O2 concentration. The variation of CB concentration at constant ratio [H2O2]/ [CB] led to the decrease in the degradation efficiency due to the competition with the intermediates, for •OH radicals consumption. Our kinetic results agreed with the literature information on the CB degradation mechanism.

Knowledge-Based Development in Small Communities - Efficient Management Based on Local Expertize

© 2012 Teodorescu et al., licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Knowledge-Based Development in Small Communities – Efficient Management Based on Local Expertize