Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/103388
Autor(es): | Ana L. Gonçalves Carla M. Rodrigues José C.M. Pires Manuel Simões |
Título: | The effect of increasing CO2 concentrations on its capture, biomass production and wastewater bioremediation by microalgae and cyanobacteria |
Data de publicação: | 2016 |
Resumo: | The accumulation of carbon dioxide (CO2) in the atmosphere, as well as the enrichment of water courses in nutrients are environmental issues associated to numerous impacts on ecosystems. Several attempts have been made to address these issues, but the cost and sustainability of current methodologies are still a concern. Cultivation of photosynthetic microorganisms appears as a sustainable solution because: (i) they can effectively uptake CO2 and nutrients, such as nitrogen and phosphorus; and (ii) the resulting biomass can be processed into valuable products. In this study, the effect of different CO2 concentrations (from approximately 0.04 to 10% v/v) on CO2 capture, biomass production and nutrients (nitrogen and phosphorus) uptake was assessed for the microalgae Chlorella vulgaris and Pseudokirchneriella subcapitata and the cyanobacteria Synechocystis salina and Microcystis aeruginosa grown at laboratory scale under batch mode. For the studied range of CO2 concentrations, C. vulgaris, S. salina and M. aeruginosa have reached the highest biomass productivities (0.126 +/- 0.033 g(dw) L-1 d(-1)) and carbon fixation rates (0.101 +/- 0.027 g(C) L-1 d(-1)). These microorganisms have also been effective in nutrients uptake, reaching removal efficiencies close to 100%. Through mathematical modelling, it was possible to conclude that optimal CO2 concentration for these microorganisms was 5.35 +/- 0.34% (v/v). |
Assunto: | Engenharia de bioprocessos, Engenharia de projecto, Engenharia do ambiente Bioprocess engineering, Project engineering, Environmental engineering |
Áreas do conhecimento: | Ciências da engenharia e tecnologias::Engenharia do ambiente Engineering and technology::Environmental engineering |
URI: | https://hdl.handle.net/10216/103388 |
Informação Relacionada: | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | restrictedAccess |
Aparece nas coleções: | FEUP - Artigo em Revista Científica Internacional |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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180545.pdf Restricted Access | Artigo original publicado | 876.94 kB | Adobe PDF | Request a copy from the Author(s) |
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