Micellar catalysis by humic substances in reactions of alkaline colour fading and condensation
2001
Klavins, M. | Babre, K. (University of Latvia, Riga (Latvia))
The aim of the present work was to study the catalytic activity of humic substances of different origin in the condensation and hydroxylation reactions. The obtained results show that humic substances from water, soil and peat exhibit considerable catalytic activity in colour fading and condensation reactions and thus may influence the fate of pollutants in environment. The rate of studied reactions depends on the nature and concentration of humic substances, pH and temperature. The maximum catalytic activity is characteristic for aquatic fulvic acids, but the reaction mechanism possibly involves micellar catalysis in aquatic media.
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