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المؤلفGruber-Brunhumer, M.R.
المؤلفJerney, J.
المؤلفZohar, E.
المؤلفNussbaumer, M.
المؤلفHieger, C.
المؤلفBochmann, G.
المؤلفSchagerl, M.
المؤلفObbard, J.P.
المؤلفFuchs, W.
المؤلفDrosg, B.
تاريخ الإتاحة2015-12-29T12:54:36Z
تاريخ النشر2015-11
اسم المنشورAlgal Research
المصدرScopus
المعرّفhttp://dx.doi.org/10.1016/j.algal.2015.08.022
الاقتباسGruber-Brunhumer M.R., Jerney J., Zohar E., Nussbaumer M., Hieger C., Bochmann G., Schagerl M., Obbard J.P., Fuchs W., Drosg B., Acutodesmus obliquus as a benchmark strain for evaluating methane production from microalgae: Influence of different storage and pretreatment methods on biogas yield, (2015) Algal Research, 12, pp. 230-238.
الرقم المعياري الدولي للكتاب2211-9264
معرّف المصادر الموحدhttp://hdl.handle.net/10576/4013
الملخصAcutodesmus obliquus (SAG 276-1), a microalga with a resistant cell wall, was chosen as a benchmark strain for testing the effect of storage and pretreatment methods on methane yields during anaerobic digestion. A. obliquus was cultivated in sleevebag photobioreactors (batch cultivation). Biomass was centrifuged to a final total solid concentration of 91gL-1 and subjected to different treatments. The biomass was then subjected to biochemical methane potential tests. Among the different storage methods tested, freezing and freeze-drying resulted in significantly higher CH4 yields, i.e., 350 Nm3t-1 VSharvest (=normalized gas volume in m3 corrected to norm temperature and pressure per unit harvested volatile solids) (+53% CH4) and 291Nm3t-1 VSharvest (+29% CH4) compared to the fresh biomass (229 Nm3t-1 VSharvest). For pretreatments, the combined milling and enzyme approach (300 Nm3t-1 VSharvest, +57% CH4), ultrasonication (292 Nm3t-1 VSharvest, +52% CH4) and milling (289 Nm3t-1 VSharvest, +51% CH4) resulted in significantly higher CH4 conversion compared to the untreated control (191Nm3t-1 VSharvest). We found a significantly strong positive correlation between viable cell counts and CH4 yields, and a correlation with the solubilized chemical oxygen demand. Our study revealed that mechanical pretreatments were effective and resulted in highest CH4 yields. In addition, the effect of different storage methods must not be neglected.
راعي المشروعAustrian COMET program under grant number 834018. Republic of Austria and the Federal Provinces of Styria, Lower Austria and Burgenland. Co-funding from the industry partner Erber Group shall be highly acknowledged.
اللغةen
الناشرElsevier
الموضوعAnaerobic digestion
Biochemical methane potential
Bioenergy
Microalgae
Photobioreactor
Scenedesmus
العنوانAcutodesmus obliquus as a benchmark strain for evaluating methane production from microalgae: Influence of different storage and pretreatment methods on biogas yield
النوعArticle
الصفحات230-238
رقم المجلد12
dc.accessType Abstract Only


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