umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Aqueous Extraction of the Sulfated Polysaccharide Ulvan from the Green Alga Ulva rigida: Kinetics and Modeling
Show others and affiliations
2017 (English)In: Bioenergy Research, ISSN 1939-1234, E-ISSN 1939-1242, Vol. 10, no 3, p. 915-928Article in journal (Refereed) Published
Abstract [en]

The incentives for utilizing a versatile range of renewable feedstocks in novel ways are continuously increasing. Sulfated polysaccharides from green algae, such as ulvan, are interesting due to the rare sugar constituents which can be utilized for new materials and chemicals in industry. However, before valorization fractionation needs to be performed in a controlled way. In the current work, the kinetics of the aqueous extraction of ulvan was studied in the temperature range 60–130 °C. The highest yield of 97.6 wt.% was attained after 2 h of extraction at 130 °C, and the extraction efficiency was observed to be heavily temperature dependent. Interestingly, two regimes of extraction kinetics were observed, presumably due to the different ulvan fractions contained within the cell wall of green algae. The experimental data was modeled with first-order kinetics, and an apparent activation energy of 53.8 kJ mol−1 was obtained for the process. The algal residue was processed using simultaneous saccharification and fermentation, and 0.48 g ethanol g−1 of sugars was obtained.

Place, publisher, year, edition, pages
2017. Vol. 10, no 3, p. 915-928
Keywords [en]
Green algae, Bio-ethanol, Extraction, Kinetics, Ulvan, Rhamnose
National Category
Chemical Process Engineering
Identifiers
URN: urn:nbn:se:umu:diva-138167DOI: 10.1007/s12155-017-9853-4ISI: 000406743700028OAI: oai:DiVA.org:umu-138167DiVA, id: diva2:1131595
Projects
Bio4EnergyAvailable from: 2017-08-15 Created: 2017-08-15 Last updated: 2019-08-29Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Mikkola, Jyri-Pekka

Search in DiVA

By author/editor
Mikkola, Jyri-Pekka
By organisation
Department of Chemistry
In the same journal
Bioenergy Research
Chemical Process Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 158 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf