lnu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Monitoring of a biogas process using electronic gas sensors and near-infrared spectroscopy (NIR)
Visa övriga samt affilieringar
2000 (Engelska)Ingår i: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 41, nr 3, s. 1-8Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The use of electronic gas sensors and near-infrared spectroscopy (NIR) to monitor the dynamics in a biogas process was evaluated using multivariate data analysis. The digester, a completely stirred 81 tank reactor fed with a mixture of cellulose, albumin and minerals, was exposed to an overload of glucose after which monitoring of electronic gas sensor responses, NIR spectra as well as traditional chemical variables and analysis of microbial community structure were done. The responses from an array of electronic gas sensors consisting of MOS and MOSFET-sensors were correlated against volatile compounds in the headspace using partial least square (PLS) regressions. The root mean square error of prediction (RMSEP) was 0.15 g/l for acetate in the range of 0.14-1.72 g/l and the RMSEP for methane was 2.3% in the range of 27-73%. Selected wavelengths from the second derivative of the original NIR spectra (400-2500 nm) resulted in a PLS-model for predicting microbial biomass, measured as total phospholipid fatty acids, with a RMSEP of 9 nmol/ml in the range of 163-293 nmol/ml. The NIR model developed for acetate had a RMSEP of 0.20 g/l within the range of 0.14-1.72 g/l. The results clearly show that both NIR and an array of electronic gas sensors can provide simultaneous non-invasive in situ monitoring of important process variables in anaerobic digesters.

Ort, förlag, år, upplaga, sidor
2000. Vol. 41, nr 3, s. 1-8
Nyckelord [en]
anaerobic digestion, electronic gas sensors, multivariate data analysis, near-infrared spectroscopy, on-line monitoring, organic overload
Nationell ämneskategori
Mikrobiologi
Identifikatorer
URN: urn:nbn:se:lnu:diva-11587ISI: 000086885400002OAI: oai:DiVA.org:lnu-11587DiVA, id: diva2:415328
Konferens
International Symposium on Anaerobic Digestion of Solid Waste BARCELONA, SPAIN, JUN 15-18, 1999
Anmärkning
wos2000Tillgänglig från: 2011-05-06 Skapad: 2011-05-06 Senast uppdaterad: 2017-12-11Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Personposter BETA

Carlsson Juhlin, Helena

Sök vidare i DiVA

Av författaren/redaktören
Carlsson Juhlin, Helena
I samma tidskrift
Water Science and Technology
Mikrobiologi

Sök vidare utanför DiVA

GoogleGoogle Scholar

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 184 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf