Effect of the tetracycline antibiotics on performance and microbial community of microbial fuel cell
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RESEARCH PAPER
Effect of the tetracycline antibiotics on performance and microbial community of microbial fuel cell Şeyho Topcu1 · Ergin Taşkan1 Received: 12 June 2020 / Accepted: 24 October 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The adverse effect of tetracycline antibiotics on microbial activity is one of the serious risks for the biologic wastewater treatment process. The microbial fuel cells (MFCs) are a promising technology for wastewater treatment and renewable power generation process. For this reason, the investigation of the inhibition effect of the tetracyclines on the MFCs is essential for reducing damage on the environment. This paper focused on the performance of MFCs under different antibiotic concentrations at the range of 0.25–50 mg/L. The power generation performance, microbial community and biofilm characteristics (morphology, resistance and viability) of MFCs were investigated in detail. The results indicated that the increase in the antibiotic concentration significantly affected the MFC performance and microbial community. A modified non-competitive inhibition model was used to predict the inhibition effect of tetracycline antibiotics on the MFCs. Graphic Abstract
Keywords Tetracycline antibiotics · Microbial fuel cell · Inhibition ratio · Biofilm · Microbial community Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00449-020-02473-8) contains supplementary material, which is available to authorized users. * Ergin Taşkan [email protected]; [email protected] 1
Faculty of Engineering, Department of Environmental Engineering, Firat University, 23119 Elazig, Turkey
Introduction In recent years, environmental problems have significantly increased with the use of fossil fuels, which highlights the increasing importance of using renewable energy sources. Accordingly, the researchers have focused on the renewable energy generation. MFC is one of the most promising
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technologies for renewable energy production, which removes pollutants from waste while directly producing electricity by the decomposition of organic maters using microorganisms [1]. For this reason, MFC is an attractive alternative for the classical activated sludge treatment systems because they have the ability to treat wastewater and generate bioelectricity simultaneously. However, toxic and inhibition effects of the chemicals (pharmaceutics, heavy metals, pesticides, etc.,) on the electroactive microorganisms negatively affect the electricity generation performance of MFCs [2]. In recent years, the use of pharmaceutics has been incredibly increased and moved to the wastewater treatment plants [3]. Therefore, the antibiotics have been considered as emerging pollutants for surface water, groundwater, untreated wastewater, drinking water and treated wastewater by many researchers [4, 5]. Tetracycline antibiotics have commonly been used in the human and veterinary medicine for the treatment of many kinds of bact
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