Mechanical stress tolerance of two microalgae (Articolo in rivista)

Type
Label
  • Mechanical stress tolerance of two microalgae (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.procbio.2011.07.002 (literal)
Alternative label
  • Marco Scarsella; Giuseppe Torzillo; Agnese Cicci; Gianluca Belotti; Paolo De Filippis; Marco Bravi (2012)
    Mechanical stress tolerance of two microalgae
    in Process biochemistry (1991)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Marco Scarsella; Giuseppe Torzillo; Agnese Cicci; Gianluca Belotti; Paolo De Filippis; Marco Bravi (literal)
Pagina inizio
  • 1603 (literal)
Pagina fine
  • 1611 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 47 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento Ingegneria Chimica Materiali e Ambiente, Università La Sapienza, Roma Istituto per lo Studio degli Ecosistemi, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze (literal)
Titolo
  • Mechanical stress tolerance of two microalgae (literal)
Abstract
  • Aim of the present work is quantifying the mechanical stress generated by some major process equipment used in massive microalgae culturing plants (centrifugal and air-lift pumps, and nozzles) and highlighting its effects on the microalgal population. Two microalgal species were used as test cases: Chlorella vulgaris (unicellular) and Scenedesmus dimorphus 1237 (colonial). The evaluation of the shear effect on algal growth was carried out through measurement of absorbance, photosynthetic activity (oxygen evolution) and variable chlorophyll fluorescence. Cell aggregate development/breakage was effectuated by visual inspection and light scattering. The use of centrifugal pumps for culture recycling strongly affected the growth of C. vulgaris, while nozzles effects were confined to aggregate breakage of S. dimorphus. The analysis of experimental data is supported by the consideration of hydrodynamic stress calculated by: shear rate, shear stress, stress volumes/times, energy dissipation rates, and turbulence microscale size. (literal)
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