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Open AccessArticle

Utility of Ochrobactrum anthropi YC152 in a Microbial Fuel Cell as an Early Warning Device for Hexavalent Chromium Determination

1
Fujian Provincial Key Laboratory of Biological Engineering on Traditional Herbs and Research Center of Natural Cosmeceuticals Engineering, Xiamen Medical College, Xiamen 361008, China
2
Department of Biological Science and Technology, China University of Science and Technology, Taipei 11581, Taiwan
3
Department of Food Science, China University of Science and Technology, Taipei 11581, Taiwan
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Monica Florescu
Sensors 2016, 16(8), 1272; https://doi.org/10.3390/s16081272
Received: 29 May 2016 / Revised: 15 July 2016 / Accepted: 8 August 2016 / Published: 16 August 2016
Fast hexavalent chromium (Cr(VI)) determination is important for environmental risk and health-related considerations. We used a microbial fuel cell-based biosensor inoculated with a facultatively anaerobic, Cr(VI)-reducing, and exoelectrogenic Ochrobactrum anthropi YC152 to determine the Cr(VI) concentration in water. The results indicated that O. anthropi YC152 exhibited high adaptability to pH, temperature, salinity, and water quality under anaerobic conditions. The stable performance of the microbial fuel cell (MFC)-based biosensor indicated its potential as a reliable biosensor system. The MFC voltage decreased as the Cr(VI) concentration in the MFC increased. Two satisfactory linear relationships were observed between the Cr(VI) concentration and voltage output for various Cr(VI) concentration ranges (0.0125–0.3 mg/L and 0.3–5 mg/L). The MFC biosensor is a simple device that can accurately measure Cr(VI) concentrations in drinking water, groundwater, and electroplating wastewater in 45 min with low deviations (<10%). The use of the biosensor can help in preventing the violation of effluent regulations and the maximum allowable concentration of Cr(VI) in water. Thus, the developed MFC biosensor has potential as an early warning detection device for Cr(VI) determination even if O. anthropi YC152 is a possible opportunistic pathogen. View Full-Text
Keywords: chromiun; biosensor; microbial fuel cell; wastewater chromiun; biosensor; microbial fuel cell; wastewater
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Wang, G.-H.; Cheng, C.-Y.; Liu, M.-H.; Chen, T.-Y.; Hsieh, M.-C.; Chung, Y.-C. Utility of Ochrobactrum anthropi YC152 in a Microbial Fuel Cell as an Early Warning Device for Hexavalent Chromium Determination. Sensors 2016, 16, 1272.

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