Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4997469 | Bioresource Technology | 2017 | 34 Pages |
Abstract
A local strain of Chlorella vulgaris was cultivated by using cheese whey (CW), white wine lees (WL) and glycerol (Gly), coming from local agro-industrial activities, as C sources (2.2 g C Lâ1) to support algae production under mixotrophic conditions in Lombardy. In continuous mode, Chlorella increased biomass production compared with autotrophic conditions by 1.5-2 times, with the best results obtained for the CW substrate, i.e. 0.52 g Lâ1 dâ1 of algal biomass vs. 0.24 g Lâ1 dâ1 of algal biomass for autotrophic conditions, and protein content for both conditions adopted close to 500 g kgâ1 DM. Mixotrophic conditions gave a much higher energy recovery efficiency (EF) than autotrophic conditions, i.e. organic carbon energy efficiency (EFoc) of 32% and total energy efficiency (Eft) of 8%, respectively, suggesting the potential for the culture of algae as a sustainable practice to recover efficiently waste-C and a means of local protein production.
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Authors
Silvia Salati, Giuliana D'Imporzano, Barbara Menin, Davide Veronesi, Barbara Scaglia, Pamela Abbruscato, Paola Mariani, Fabrizio Adani,