36 documents found, page 1 of 4
Life cycle assessment of lipid production from Pavlova gyrans: Influence of the...
Novais, Roberto Daniel Machado; Mata, Teresa M.; Madureira, Leandro Filipe Feiteira; Maciel, José Filipe Gonçalves; Vicente, A. A.; Martins, António A.Microalgae have been increasingly recognized as an alternative source of lipids, especially polyunsaturated fatty acids (PUFA) such as omega 3 and 6, being essential to carefully assess their life cycle environmental impacts. Hence, this work aims to carry out a life cycle assessment (LCA) of lipid production from the microalga Pavlova gyrans grown in different culture media and nutrient concentrations, on a cr...
Life cycle assessment and cost analysis of innovative agar extraction technolog...
Pereira, Sara Gonçalves; Martins, António A.; Mata, Teresa M.; Pereira, Ricardo Nuno Correia; Teixeira, J. A.; Rocha, Cristina M. R.Developing efficient and sustainable extraction technologies for valuable biocompounds from seaweed is crucial to overcome the limitations of conventional technologies. This study aims to compare three innovative technologies for agar extraction from two red seaweed species, G. sesquipedale and G. vermiculophylla: subcritical water extraction (performed at 125°C, 2.5atm, 1min, and at 140°C, 3.8atm, 1s), moderat...
Life cycle assessment of bioethanol from corn stover from soil phytoremediation
Mata, Teresa M.; Rodrigues, Sara; Caetano, Nídia; Martins, António A.Bioethanol is the most widely used biofuel in the world. Bioethanol production from biomass is a way to reduce crude oil consumption and the environmental pollution. This work aims to evaluate the potential environmental impacts of bioethanol production from corn stover obtained from phytoremediation, comparing four different acids (Sulfuric, Nitric, Hydrochloric and Acetic acids) to perform the biomass pre-tre...
Microalgae for pigments and cosmetics
Caetano, Nídia S.; Corrêa, Priscila S.; Morais Júnior, Wilson G. de; Oliveira, Gisela M.; Martins, Antonio A.A.; Branco-Vieira, Monique; Mata, Teresa M.Microalgae are among the most promising cell factories of the near future. Their renewable nature, and ability to rely on photosynthesis to use CO2 or nutrients from wastewater to grow and multiply, make them an emergent source of valuable natural compounds. Although in the past, a few of these microalgae have been known for their value as a source of proteins, carbohydrates, exopolysaccharides, polyunsaturated...
Life cycle analysis of a combined electrolysis and methanation reactor for meth...
Federici, Flavio; Puna, Jaime; Mata, Teresa M.; Martins, António A.The need to decarbonize industrial processes and to increase the utilization of renewable resources, either energy and raw materials, has led to the development of new production processes. The focus of this paper is to evaluate the environmental impacts of an innovative 1 kW pilot plant for methane production, following the life cycle thinking approach. The process is based on the coupling of an alkaline water...
Composition, cultivation and potential applications of Chlorella zofingiensis –...
Gorgich, Malihe; Martins, António A.; Mata, Teresa M.; Caetano, NídiaChlorella zofingiensis has been in the center of attention due to its viability of cultivation, capability to yield various products, and applicability in various industrial sectors. Several research studies have evaluated this microalga as a bio-factory for carotenoids and lipids production, which are interesting compounds for industrial applications. The microalgae's robustness to various environmental and st...
Indoor Air Quality Improvement Using Nature-Based Solutions: Design Proposals t...
Mata, Teresa M.; Oliveira, Gisela M.; Monteiro, Helena; Silva, Gabriela Ventura; Caetano, Nídia; Martins, António A.Low indoor air quality is an increasingly important problem due to the spread of urbanization. Because people spend most of their time inside, poor indoor air quality causes serious human health issues, resulting in significant economic losses. In this work, the current state of affairs is presented and analyzed, focusing on the current problems and the available solutions to improve the quality of indoor air, ...
Valorization of Agro-Industrial Residues: Bioprocessing of Animal Fats to Reduc...
Martins, António A.; Andrade, Soraia; Correia, Daniela; Matos, Elisabete; Caetano, Nídia; Mata, Teresa M.Adding value to agro-industrial residues is becoming increasingly important, satisfying needs to promote resources’ use efficiency and a more sustainable and circular economy. This work performs a parametric and kinetic study of enzymatic esterification of lard and tallow with high acidity, obtained by the rendering of slaughter by-products, allowing their use as a feed ingredient and increasing their market va...
Syngas production by bi-reforming methane on an Ni–K-promoted catalyst using hy...
Cunha, Adelino F.; Morales-Torres, Sergio; Pastrana-Martínez, Luisa M.; Martins, António A.; Mata, Teresa M.; Caetano, Nídia; Loureiro, José M.Steam reforming of methane (SRM) and dry reforming of methane (DRM) are frequently used in the production of syngas; however, the bi-reforming of methane (BRM) is an interesting and alternative process. In this study, BRM was studied over MgO, a layered double hydroxide (LDH) phase that was destroyed between 600 °C and 900 °C during the reaction. It showed good sorption capacity for CO2 at relatively low temper...
Biotechnological potential of Phaeodactylum tricornutum for biorefinery processes
Branco-Vieira, Monique; San Martin, Sergio; Agurto, Cristian; Freitas, Marcos A.V.; Martins, António A.; Mata, Teresa M.; Caetano, NídiaMicroalgae are a rich source of proteins, carbohydrates and lipids, among other components, and thus, are considered to be the next generation biomass. However, in order to enhance the economic viability of its industrial production, all biomass components need to be valorized, requiring a multi-product biorefinery. Thus, this work proposes and conceptually analyses biorefinery processes for valorizing Phaeodac...