Abstract
Some micropollutants present in wastewaters are barely removed in sewage treatment plants. In many cases a post-treatment process based on separation and/or oxidation has to be applied. The aim of this study was the technical and economic comparison of enzymatic technologies with other advanced oxidation processes (AOPs) for the degradation of phenol. Batch and continuous enzymatic reactors, using free and immobilized manganese peroxidase (MnP, EC 1.11.1.13), were considered. Continuous degradation of phenol in an enzymatic membrane reactor was shown to be the fastest process and degradation in a continuous reactor with immobilized enzyme involved the lowest consumption of enzyme. However, the immobilization process increased the enzyme cost 100-fold. A continuous enzymatic membrane reactor gave high degradation efficiency and may be a viable technology for phenol removal when compared with other AOPs from both technical and economic points of view.
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