Simultaneous detection of absorption spectrum and refractive index ratio with a spectrophotometer: monitoring contaminants in bioethanol
2011 (English)In: Measurement science and technology, ISSN 0957-0233, E-ISSN 1361-6501, Vol. 22, no 5, 6- p.Article in journal (Refereed) Published
The optical properties of a biofuel resulting from the fungi-treated lignocellulosic biomass in an ethanol matrix were studied. The matrix simulates the case that the bioethanol is contaminated by sugars, water and colour pigments that reduce the quality of the biofuel and compromise the combustion process. It is suggested that by applying a spectrophotometer only, it is possible to obtain valid information, i.e. the spectral features of the contaminants as well as the refractive index ratio of bioethanol. This allows for simultaneous purity and density detection of biomass-derived liquids or liquid biofuels, in comparison to a reference representing an ideal bioethanol (pure ethyl alcohol, ethanol of 99.5% purity (v/v)).
Place, publisher, year, edition, pages
IOP Publishing , 2011. Vol. 22, no 5, 6- p.
absorption, refractive index, bioethanol, lignocellulosic biomass
IdentifiersURN: urn:nbn:se:umu:diva-40805DOI: 10.1088/0957-0233/22/5/055803OAI: oai:DiVA.org:umu-40805DiVA: diva2:402872