Enhancing the environmental and economic sustainability of heterotrophic microalgae cultivation: Kinetic modelling and screening of alternative carbon sources DOI Creative Commons
S. Rossi, D. Carecci,

Lorenzo Proietti

и другие.

Chemical Engineering Journal Advances, Год журнала: 2024, Номер 19, С. 100632 - 100632

Опубликована: Июль 26, 2024

Heterotrophic microalgae cultivation has been suggested to reduce conventional photo-autotrophic microalgal biomass production costs. In heterotrophic cultivation, the most relevant operational costs are constituted by supply of pure substrates used as carbon source (e.g., glucose), and high energy request for culture aeration. addition, suboptimal conditions temperature pH algal productivity, further increasing this work, an attempt was made define more sustainable cost-effective strategies Chlorellaceae Scenedesmaceae. Several by-products from a local confectionery industry were thus screened alternative sources. Manufacturing residues peppermint liquorice candies allowed achieve comparable maximum growth rates (1.44 d-1), yields (0.33 g COD·g COD-1) productivities (370 mg COD·L-1·d-1) those achieved using glucose. A preliminary economic evaluation showed that could be lowered up 85.6% substituting glucose with selected industrial by-products. As fermentation conditions, maintained at relatively low dissolved oxygen (DO) concentrations, in large range values. optimal temperatures (37.0 – 37.2°C), values (6.8 7.4), DO concentrations (> 0.5 1 O2·L-1) identified. On overall, study demonstrated possibility achieving reduction while implementing circular economy principles framework resource recovery during bioremediation organic waste.

Язык: Английский

Enhancing the environmental and economic sustainability of heterotrophic microalgae cultivation: Kinetic modelling and screening of alternative carbon sources DOI Creative Commons
S. Rossi, D. Carecci,

Lorenzo Proietti

и другие.

Chemical Engineering Journal Advances, Год журнала: 2024, Номер 19, С. 100632 - 100632

Опубликована: Июль 26, 2024

Heterotrophic microalgae cultivation has been suggested to reduce conventional photo-autotrophic microalgal biomass production costs. In heterotrophic cultivation, the most relevant operational costs are constituted by supply of pure substrates used as carbon source (e.g., glucose), and high energy request for culture aeration. addition, suboptimal conditions temperature pH algal productivity, further increasing this work, an attempt was made define more sustainable cost-effective strategies Chlorellaceae Scenedesmaceae. Several by-products from a local confectionery industry were thus screened alternative sources. Manufacturing residues peppermint liquorice candies allowed achieve comparable maximum growth rates (1.44 d-1), yields (0.33 g COD·g COD-1) productivities (370 mg COD·L-1·d-1) those achieved using glucose. A preliminary economic evaluation showed that could be lowered up 85.6% substituting glucose with selected industrial by-products. As fermentation conditions, maintained at relatively low dissolved oxygen (DO) concentrations, in large range values. optimal temperatures (37.0 – 37.2°C), values (6.8 7.4), DO concentrations (> 0.5 1 O2·L-1) identified. On overall, study demonstrated possibility achieving reduction while implementing circular economy principles framework resource recovery during bioremediation organic waste.

Язык: Английский

Процитировано

3