Abstract
Abstract Benzothiazoles (BTs) appear in the environment mainly due to their production and use as industrial chemicals in the leather and wood industries, and mainly as vulcanization accelerators in rubber production. Doubts about the possibility to biodegrade these compounds efficiently have been raised. Ozonation has been proposed in literature as a suitable method for detoxification of wastewater containing 2-mercaptobenzothiazole (MBT). Feasibility of the ozonation process to remove selected BTs and facilitation of subsequent biological wastewater treatment were studied in our work. Ozonation experiments were carried out in a lab-scale jet loop ozonation reactor. Synthetic wastewater contained MBT, BT, 2-hydroxybenzothiazole (OHBT), 2-aminobenzothiazole (ABT), benzothiazole-2-sulfonate (BTS), and aniline as the main organic pollutants of industrial wastewater. Kinetics of organic pollutant removal was investigated at pH=8.5 and 5.8. Significantly higher influence of the pH value (thus also the influen...
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