In the last decade, interest toward the potential application of microalgae has grown considering their potential use in industrial sectors as human nutrition and health, animal feed and biopolymers. Their ability to use light or/and organic carbon as energy source, makes them able to grow in a wide range of conditions. Because of that, the possibility to use alternative nutrients and water sources for their cultivation has been investigated. The microalgal cultivation using wastewaters mixed with synthetic medium might be a good combination that could reduce costs of water, nutrients and wastewater treatment. Anyway, wastewaters are frequently dark colored and contain toxic compounds that could have a negative impact on microalgal light uptake and metabolism. In this study, an experimental first principles hybrid method for the estimation of microalgal growth in non-transparent media was developed as a guide in the choice of the best formulation of wastewater-based culture media for microalgae. To carry out several experimental runs in parallel with different conditions (dilution of the wastewater, different light sources, etc.) a cylindrical bubble column PhotoBioReactor (PBR) was adopted. Its simple geometry allows the analysis of inside light fluxes. A non-metabolizable and non-toxic dye, in condition of purely light-radiative growth limitation, was added to the medium mimicking the reduced transparency of wastewaters. As final step to test the model, culture mediums with wastewater addiction were used for microalgal cultivation, showing their nutritive effects on growth.

Development of semi-theoretical light radiation and photosynthetic growth model for the optimal exploitation of wastewaters by microalgae / Mazzelli, A.; Cicci, A.; Sed, G.; Bravi, M.. - In: CHEMICAL ENGINEERING TRANSACTIONS. - ISSN 2283-9216. - 64:(2018), pp. 685-690. [10.3303/CET1864115]

Development of semi-theoretical light radiation and photosynthetic growth model for the optimal exploitation of wastewaters by microalgae

Mazzelli A.
Primo
Investigation
;
Cicci A.
Secondo
Membro del Collaboration Group
;
Sed G.
Penultimo
Membro del Collaboration Group
;
Bravi M.
Ultimo
Conceptualization
2018

Abstract

In the last decade, interest toward the potential application of microalgae has grown considering their potential use in industrial sectors as human nutrition and health, animal feed and biopolymers. Their ability to use light or/and organic carbon as energy source, makes them able to grow in a wide range of conditions. Because of that, the possibility to use alternative nutrients and water sources for their cultivation has been investigated. The microalgal cultivation using wastewaters mixed with synthetic medium might be a good combination that could reduce costs of water, nutrients and wastewater treatment. Anyway, wastewaters are frequently dark colored and contain toxic compounds that could have a negative impact on microalgal light uptake and metabolism. In this study, an experimental first principles hybrid method for the estimation of microalgal growth in non-transparent media was developed as a guide in the choice of the best formulation of wastewater-based culture media for microalgae. To carry out several experimental runs in parallel with different conditions (dilution of the wastewater, different light sources, etc.) a cylindrical bubble column PhotoBioReactor (PBR) was adopted. Its simple geometry allows the analysis of inside light fluxes. A non-metabolizable and non-toxic dye, in condition of purely light-radiative growth limitation, was added to the medium mimicking the reduced transparency of wastewaters. As final step to test the model, culture mediums with wastewater addiction were used for microalgal cultivation, showing their nutritive effects on growth.
2018
microalgae; light modelling; RTE; growth modelling; wastewaters medium
01 Pubblicazione su rivista::01a Articolo in rivista
Development of semi-theoretical light radiation and photosynthetic growth model for the optimal exploitation of wastewaters by microalgae / Mazzelli, A.; Cicci, A.; Sed, G.; Bravi, M.. - In: CHEMICAL ENGINEERING TRANSACTIONS. - ISSN 2283-9216. - 64:(2018), pp. 685-690. [10.3303/CET1864115]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1117924
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