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. 1993 Jul;39(4-5):622-6.
doi: 10.1007/BF00205064.

Parameters affecting the degradation of benzothiazoles and benzimidazoles in activated sludge systems

D De Vos  1 , H De Wever, H Verachtert
Affiliations

Parameters affecting the degradation of benzothiazoles and benzimidazoles in activated sludge systems

D De Vos et al. Appl Microbiol Biotechnol. 1993 Jul.

Abstract

It was found that benzothiazole, 2-oxybenzothiazole and 2-benzothiazolesulphonate were degraded in activated sludge systems. 2-Mercaptobenzothiazole (MBT) was more resistant, although the first step in MBT degradation seemed to be transformation to the sulphonate form. At higher MBT concentrations, it was transformed into a disulphide, which accumulated in the sludge. MBT was also found to be mainly responsible for the toxicity of rubber chemical waste-water towards activated sludges. It inhibited the degradation of the other heterocycles. Only at concentrations of around 20 ppm was MBT degraded. Mercaptobenzimidazole ranked second in resistance to degradation.

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References

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