A MEMS approach to determine the biochemical oxygen demand (BOD) of wastewaters. (8th June 2017)

• Record Type: Journal Article
• Authors: Recoules, L; Migaou, A; Dollat, X; Thouand, G; Gue, A M; Boukabache, A
• Is Part Of: Journal of micromechanics and microengineering. Volume 27:Number 7(2017:Jul.)
• Publication Date: 2017-06-08
• Subjects: BOD -- wastewater -- bacteria -- polluants -- optode -- MEMS; Microelectromechanical systems -- Periodicals; Micromechanics -- Periodicals; 621.38105
• DOI: 10.1088/1361-6439/aa710e
• Languages: English
• ISSNs: 0960-1317

Abstract

Abstract: A MEMS approach to obtain an efficient tool for the evaluation of the biochemical oxygen demand (BOD) of wastewaters is introduced. Its operating principle is based on the measurement of oxygen concentration in water samples containing organic pollutants and specific bacteria. The microsystem has been designed to perform multiple and parallel measurements in a poly-wells microfluidic device. The monitoring of the bacterial activity is ensured by optical sensors incorporated in each well of the fluidic network. By using an optode sensor, it is hereby demonstrated that this approach is efficient to measure organic pollutants by testing different Luria Bertani buffer dilutions. These results also show that it is possible to reduce the duration of measurements from 5 d (BOD5 ) of the standard approach to few hours, typically 3 h–5 h.