Publicação
Utilização de biomassa de Chlorella vulgaris na biorremediação de efluente vinícolas como bioaditivo agrícola
| Resumo: | This master thesis aimed to study the effect of winery-effluent-grown Chlorella vulgaris biomass on the germination and plant growth of Phaseolus vulgaris, Vicia lens and Zea mays. Microalgae, including Chlorella vulgaris, are very versatile organisms that produce different metabolites in different quantities based on the growth conditions. This capacity to grow under different conditions allows microalgae to be used for a vast number of uses, just like food, feed, the produced metabolites used in industries such as cosmetics and pharmaceuticals, as part of wastewater treatment and biofertilisers. These last two, when combined, allow for the create a close circle of nutrients, where the nutrients that weren’t transformed into the final product and resided in the wastewater are used by the microalgae, who can later be used as a biofertiliser. The phosphate, potassium and nitrogen present in the biomass can then be mineralised into phosphates, potassium ions and nitrates or ammonium, which are easily absorbed by plants. This availability of nutrients contributes to higher growth rates and/or better plant yield. This thesis combined different scenarios, such as: The timing of biomass addition before sowing, the comparison between the application of wet biomass and freeze-dried biomass grown in conventional medium, and the effect of wet biomass and freeze-dried biomass grown on medium containing 10% (w/w) winery effluent. In all tests the verified growth difference was deemed not significant, however there is a measurable size difference. Based on one-way ANOVA, the chemical fertiliser had a better performance. However, the use of effluent-grown biomass showed promising results when compared to the unamended soil. Following these results, preliminary data from this thesis was presented in poster format at the “8° Simpósio Produção e Transformação de Alimentos em Ambiente Sustentável”, organised by the Department of Earth Sciences of NOVA FCT in Almada, Portugal, on June 5, 2025, and at FAO Global Agrifood Biotechnologies conference organised by the Food and Agriculture Organization of the United Nations in Rome, Italy, between June 16 and 18, 2025. |
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| Autores principais: | Mateus, Válter Rafael Da Costa |
| Assunto: | Winery effluent Chlorella vulgaris Circular economy Biofertilisers Sustainability Efluente vinícola Economia circular Biofertilizantes Sustentabilidade |
| Ano: | 2025 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Setúbal |
| Idioma: | inglês |
| Origem: | Instituto Politécnico de Setúbal |
| Resumo: | This master thesis aimed to study the effect of winery-effluent-grown Chlorella vulgaris biomass on the germination and plant growth of Phaseolus vulgaris, Vicia lens and Zea mays. Microalgae, including Chlorella vulgaris, are very versatile organisms that produce different metabolites in different quantities based on the growth conditions. This capacity to grow under different conditions allows microalgae to be used for a vast number of uses, just like food, feed, the produced metabolites used in industries such as cosmetics and pharmaceuticals, as part of wastewater treatment and biofertilisers. These last two, when combined, allow for the create a close circle of nutrients, where the nutrients that weren’t transformed into the final product and resided in the wastewater are used by the microalgae, who can later be used as a biofertiliser. The phosphate, potassium and nitrogen present in the biomass can then be mineralised into phosphates, potassium ions and nitrates or ammonium, which are easily absorbed by plants. This availability of nutrients contributes to higher growth rates and/or better plant yield. This thesis combined different scenarios, such as: The timing of biomass addition before sowing, the comparison between the application of wet biomass and freeze-dried biomass grown in conventional medium, and the effect of wet biomass and freeze-dried biomass grown on medium containing 10% (w/w) winery effluent. In all tests the verified growth difference was deemed not significant, however there is a measurable size difference. Based on one-way ANOVA, the chemical fertiliser had a better performance. However, the use of effluent-grown biomass showed promising results when compared to the unamended soil. Following these results, preliminary data from this thesis was presented in poster format at the “8° Simpósio Produção e Transformação de Alimentos em Ambiente Sustentável”, organised by the Department of Earth Sciences of NOVA FCT in Almada, Portugal, on June 5, 2025, and at FAO Global Agrifood Biotechnologies conference organised by the Food and Agriculture Organization of the United Nations in Rome, Italy, between June 16 and 18, 2025. |
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