Removal of phenols-like substances in pharmaceutical wastewater with fungal bioreactors by adding Trametes versicolor

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Abstract

Fungi are known to be more resistant to toxic compounds and more effective in removing recalcitrant organics such as phenols than bacteria. Here we examined the removal of phenols (as a component of Zopliclone drugs), added to non-sterile pharmaceutical wastewater with continuous treatment fungal bioreactor by its augmentation with mono-species of white-rot fungi (WRF) Trametes versicolor. Results showed that WRF in a sterile reactor (a batch mode) were moderately effective for removal of phenols (40% in seven days); however, native wastewater microbes at optimal conditions for fungi (pH 5.5, 25 °C) were more effective (90%, both in batch and continuous flow modes). In continuous flow mode, addition of WRF was an effective way to mitigate high loads of phenols (up to 400 mg/L), by both fungal enzymes (growth rate 0.075 h-1, laccase enzymatic activity 4 nkat/mL) and biosorption. The study confirmed that naturaly occuring fungi in combination with fungus-augmentation is an effective approach for treatment of high-strength pharmaceutical wastewater.

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Bernats, M., & Juhna, T. (2018). Removal of phenols-like substances in pharmaceutical wastewater with fungal bioreactors by adding Trametes versicolor. Water Science and Technology, 78(4), 743–750. https://doi.org/10.2166/wst.2018.340

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