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Electrode specific information from voltammetric monitoring of biogas production
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics . Linköping University, The Institute of Technology.
Tekniska Verken Linkoping AB.
Tekniska Verken Linkoping AB.
Tekniska Verken Linkoping AB.
2010 (English)In: Talanta: The International Journal of Pure and Applied Analytical Chemistry, ISSN 0039-9140, E-ISSN 1873-3573, Vol. 81, no 04-May, 1578-1584 p.Article in journal (Refereed) Published
Abstract [en]

A sensor employing pulse voltammetry monitored the liquid phase of a biogas reactor during 32 days of gas production An electrode allay consisting of stainless steel, platinum and rhodium electrodes generated current responses for a sequence of voltage pulses Plots of individual current responses against time indicated the electrochemical changes occurring in the broth from the perspective of each electrode. The responses from stainless steel had a pronounced diurnal oscillation which followed the daily introduction and consumption of substrate The current responses for platinum were in a narrow range whereas those for rhodium exhibited several minima A disturbance in the reactor caused by omission of substrate led to decreases in both gas production and current responses for all the electrodes Multivariate data evaluation of all the current responses by principal component analysis indicated the daily fluctuations for concentrations of ions and redox active compounds in the broth

Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam. , 2010. Vol. 81, no 04-May, 1578-1584 p.
Keyword [en]
Biogas production; Voltammetry; Electrode array; Multivariate analysis
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-58355DOI: 10.1016/j.talanta.2010.03.005ISI: 000278737100066OAI: diva2:343343
Available from: 2010-08-13 Created: 2010-08-11 Last updated: 2010-08-13

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Bjorklund, Robert
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