title: Microbial fuel cell based biosensor for in situ monitoring of anaerobic digestion process.
abstract: A wall-jet microbial fuel cell (MFC) was developed for the monitoring of anaerobic digestion (AD). This biofilm based MFC biosensor had a character of being portable, short hydraulic retention time (HRT) for sample flow through and convenient for continuous operation. The MFC was installed in the recirculation loop of an upflow anaerobic fixed-bed (UAFB) reactor in bench-scale where pH of the fermentation broth and biogas flow were monitored in real time. External disturbances to the AD were added on purpose by changing feedstock concentration, as well as process configuration. MFC signals had good correlations with online measurements (i.e. pH, gas flow rate) and offline analysis (i.e. COD) over 6-month operation. These results suggest that the MFC signal can reflect the dynamic variation of AD and can potentially be a valuable tool for monitoring and control of bioprocess.
authors.affiliation: Department of Biotechnology, Lund University, Lund SE-221 00, Sweden.
authors.forename: Zhidan
authors.initials: Z
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.forename: Songping
authors.initials: S
authors.lastname: Zhang
authors.forename: Xin-Hui
authors.initials: XH
authors.lastname: Xing
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Su
mesh_terms: D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology; D015374:Biosensing Techniques / Q000295:instrumentation*; D006868:Hydrolysis; D009862:Online Systems; D009930:Organic Chemicals / Q000032:analysis; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
chemical_list: D009930:Organic Chemicals