By Stanislav Miertus, Giorgio Fassina
"Provides entire assurance of the present combinatorial methodologies and applied sciences hired for the layout, synthesis, and screening of molecular ""libraries."" gains checks of computer-assisted methods to guiding library synthesis. Designed to meet the call for to create, produce in excessive yield and purity, and quickly display large numbers of molecules."
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Additional info for Combinatorial Chemistry and Technology. Principles, Methods, and Applications
The main reactions involved in direct mechanism are the reaction of addition to the unsaturated part of the hydrocarbon molecule and electron transfer. Rather high oxidation/reduction potential enables ozone to react with many organic, but also inorganic compounds . O3 + 2 H − + 2e − → O2 + H 2 O (27) Degradation of organics by indirect ozone mechanism occurs at basic conditions and involves generation of OH radicals and their further reaction with present organic compounds in water. Hydroxyl radicals are generated by the reaction of ozone with hydroxyl ions present in water : − O3 + H 2 O ⎯OH ⎯ ⎯→ HO • +O2 + HO2 • (28) Mechanism of ozone decomposition in water depends on the presence of chemical species that can initiate, promote and/or inhibit its decomposition.
They reported dye decolorization by indirect mechanism significantly faster than that by direct mechanism. I. 1 mgL-1min-1, and their results revealed that rate of ozone transfer increased with increase in dye concentration, applied ozone dose and temperature. Peralta-Zamora et al. I. e. degradation of aromatics formed after the initial cleavage of dye chromophores, was significantly slower. Furthermore, Arslan-Alaton et al.  investigated the application of O3 Colored Wastewater Treatment by AOPs: A Review of Recent Studies 23 process for the treatment of simulated dyebath effluent containing several different reactive dyes at different pH region: acidic, neutral and basic.
B the optimization of UV/O3/H2O2 process regarding to the initial pH value is presented. A). Again, complete bleaching was achieved in very short treatment period through complete range of pH investigated. According to mineralization extents achieved after 30. and 60. of minute treatment, the optimal pH region for degradation of RB137 by UV/O3/H2O2 process was established. It can be observed similar system behavior like in the case of UV/O3 process (Figure 11); a significant decrease in process 50 Natalija Koprivanac and Hrvoje Kusic effectiveness at strong basic conditions, and the highest mineralization efficiency at neutral and weak basic pH region.