Abstract
An investigation was made into a novel system aimed at reducing the impact of highly polluting wastewaters, and based on the combined action of catalytic oxidation and microbial biotechnology. The experimental part incorporated the following three schemes: chemical treatment using Fenton’s reaction for a single process (stage 1); biological treatment only (stage 2); and chemical oxidation followed by biological treatment (stage 3). Wastewaters with 2-mercaptobenzothiazole (MBT; 7,200–7,400 mg O2 l−1) were oxidized by stoichiometric amounts of dilute hydrogen peroxide (35%) in the presence of water soluble iron catalysts, either Fe (II) or Fe (III), at concentrations up to 1% w/w and above. As a result, transformation by chemical means of recalcitrant organics to more easily attackable end-products occurs, that can subsequently undergo conventional or advanced (microflora and biomass dispersed or adhered) biological treatments, with 90% of chemical oxygen demand abatement and 95% of MBT.


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The authors are grateful for the help and cooperation provided by the Flexsys Industry, (Campobasso, Italy). We also wish to thank S. Pool for editing the manuscript.
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Ranalli, G., Belli, C., Lustrato, G. et al. Effects of Combined Chemical and Biological Treatments on the Degradability of Vulcanization Accelerators. Water Air Soil Pollut 192, 199–209 (2008). https://doi.org/10.1007/s11270-008-9647-6
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DOI: https://doi.org/10.1007/s11270-008-9647-6
