title: Enhanced response of microbial fuel cell using sulfonated poly ether ether ketone membrane as a biochemical oxygen demand sensor.
abstract: The present study is focused on the development of single chamber microbial fuel cell (SCMFC) using sulfonated poly ether ether ketone (SPEEK) membrane to determine the biochemical oxygen demand (BOD) matter present in artificial wastewater (AW). The biosensor produces a good linear relationship with the BOD concentration up to 650 ppm when using artificial wastewater. This sensing range was 62.5% higher than that of Nafion(®). The most serious problem in using MFC as a BOD sensor is the oxygen diffusion into the anode compartment, which consumes electrons in the anode compartment, thereby reducing the coulomb yield and reducing the electrical signal from the MFC. SPEEK exhibited one order lesser oxygen permeability than Nafion(®), resulting in low internal resistance and substrate loss, thus improving the sensing range of BOD. The system was further improved by making a double membrane electrode assembly (MEA) with an increased electrode surface area which provide high surface area for electrically active bacteria.
authors.affiliation: Department of Chemistry, Anna University, Sardar Patel Road, Chennai 600 025, Tamil Nadu, India.
authors.forename: Sivasankaran
authors.initials: S
authors.lastname: Ayyaru
authors.affiliation: Department of Chemistry, Anna University, Sardar Patel Road, Chennai 600 025, Tamil Nadu, India. Electronic address: sangeetha@annauniv.edu.
authors.forename: Sangeetha
authors.initials: S
authors.lastname: Dharmalingam
mesh_terms: D001419:Bacteria / Q000378:metabolism; D001674:Bioelectric Energy Sources / Q000382:microbiology; D057919:Biological Oxygen Demand Analysis; D015374:Biosensing Techniques; D055664:Electrochemical Techniques; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry; D005465:Fluorocarbon Polymers / Q000737:chemistry; D007659:Ketones / Q000737:chemistry; D008567:Membranes, Artificial; D010100:Oxygen / Q000032:analysis*; D011108:Polymers / Q000737:chemistry*; D013450:Sulfones / Q000737:chemistry*; D013499:Surface Properties; D062065:Wastewater / Q000737:chemistry
chemical_list: D004573:Electrolytes; D005465:Fluorocarbon Polymers; D007659:Ketones; D008567:Membranes, Artificial; D010100:Oxygen; D011108:Polymers; D013450:Sulfones; D062065:Wastewater; C022840:polyether sulfone; C040402:perfluorosulfonic acid
keywords: Biosensor; Double membrane electrode assembly; Microbial fuel cells; Nafion(®); Proton exchange membranes