Flocculation induced by pH decrease is here presented as a solution to pre-concentrate algal cultures of species belonging to Scenedesmaceae and preserve the integrity of the biomass, while maintaining the photosynthetic capacity of non-harvested cells. The low-pH flocculation method gives highly effective results exclusively by the strength of the acid (hydrochloric or formic) used for the treatment, and is applicable to cultures having high cell densities (N2 g L−1). High flocculation efficiencies (N90%) are obtained also by using heterogeneous acids, such as solid acid carbons from naturally available compounds, which are proposed as cheap recyclable materials to be exploited for this purpose. Additionally, the potential reuse of the filtered medium(sterilized or not) and of the supernatant (containing non-harvested cells) is investigated to avoid great water losses and to re-inoculate new cultures.

Algal flocculation induced by homogeneous and heterogeneous acid treatments in Desmodesmus communis / Pezzolesi, L.; Samorì, C.; Pistocchi, R. - In: ALGAL RESEARCH. - ISSN 2211-9264. - STAMPA. - 10:(2015), pp. 145-151. [10.1016/j.algal.2015.04.024]

Algal flocculation induced by homogeneous and heterogeneous acid treatments in Desmodesmus communis

PEZZOLESI, LAURA;SAMORI', CHIARA;PISTOCCHI, ROSSELLA
2015

Abstract

Flocculation induced by pH decrease is here presented as a solution to pre-concentrate algal cultures of species belonging to Scenedesmaceae and preserve the integrity of the biomass, while maintaining the photosynthetic capacity of non-harvested cells. The low-pH flocculation method gives highly effective results exclusively by the strength of the acid (hydrochloric or formic) used for the treatment, and is applicable to cultures having high cell densities (N2 g L−1). High flocculation efficiencies (N90%) are obtained also by using heterogeneous acids, such as solid acid carbons from naturally available compounds, which are proposed as cheap recyclable materials to be exploited for this purpose. Additionally, the potential reuse of the filtered medium(sterilized or not) and of the supernatant (containing non-harvested cells) is investigated to avoid great water losses and to re-inoculate new cultures.
2015
Algal flocculation induced by homogeneous and heterogeneous acid treatments in Desmodesmus communis / Pezzolesi, L.; Samorì, C.; Pistocchi, R. - In: ALGAL RESEARCH. - ISSN 2211-9264. - STAMPA. - 10:(2015), pp. 145-151. [10.1016/j.algal.2015.04.024]
Pezzolesi, L.; Samorì, C.; Pistocchi, R
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/546867
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 11
social impact