Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Rui M. Novais"'
Autor:
Inês Silveirinha Vilarinho, Tânia Gameiro, Marinélia N. Capela, João Carvalheiras, Ana P. F. Caetano, Catarina Novo, Rui M. Novais, Maria Paula Seabra, João António Labrincha
Publikováno v:
Frontiers in Materials, Vol 9 (2022)
The demand for products derived from the pulp and paper industry has been increasing over the past years and is projected to further increase over the coming decades. Although being one of Portugal’s most relevant industrial activities, contributin
Externí odkaz:
https://doaj.org/article/0adcef0975ae420ba2ae048f523d04e6
Publikováno v:
Materials Proceedings, Vol 13, Iss 1, p 30 (2023)
In this work, lightweight geopolymer composites were produced by varying the content of expanded perlite and geopolymer spheres, used as aggregates. Firstly, highly porous geopolymer spheres containing mostly red mud as the solid precursor were produ
Externí odkaz:
https://doaj.org/article/69a0261dc3af4acdbfcc86157613b670
Publikováno v:
Open Ceramics, Vol 9, Iss , Pp 100243- (2022)
Environmentally conscious biomorphic ceramics (Ecoceramics) are a new class of material manufactured from renewable resources and wastes. Sustainable cork wastes were pyrolysed, and this activated carbon template infiltrated with a sol-gel precursor
Externí odkaz:
https://doaj.org/article/7a09987eb8284dc68bfb20d1a42eda61
Publikováno v:
Materials, Vol 15, Iss 21, p 7486 (2022)
The chemical foaming technique is possibly the most common method of producing porous geopolymers. Despite this, to date, the role of the content and type of surfactant on the pore size distribution of porous geopolymers is not fully perceived, as co
Externí odkaz:
https://doaj.org/article/ede6493580d04731b0e6524110f525f5
Publikováno v:
Applied Sciences, Vol 12, Iss 7, p 3612 (2022)
Alkali-activated materials are generally considered a more sustainable alternative to Portland cement binders. This derives not only from the use of solid wastes as precursors, but also from the low temperatures required for their synthesis. However,
Externí odkaz:
https://doaj.org/article/0260317720ac46289b0e9b835013029e
Autor:
Ana P. F. Caetano, João Carvalheiras, Luciano Senff, Maria P. Seabra, Robert C. Pullar, João A. Labrincha, Rui M. Novais
Publikováno v:
Materials, Vol 15, Iss 4, p 1453 (2022)
In this work, alkali-activated fly ash-derived foams were produced at room temperature by direct foaming using aluminum powder. The 1 cm3 foams (cubes) were then evaluated as adsorbents to extract heavy metals from aqueous solutions. The foams’ sel
Externí odkaz:
https://doaj.org/article/a804ae678bd0482b9a52597627d54e21
Autor:
Robert C. Pullar, Rui M. Novais, Ana P. F. Caetano, Maria Alexandra Barreiros, Stéphane Abanades, Fernando A. Costa Oliveira
Publikováno v:
Frontiers in Chemistry, Vol 7 (2019)
This review explores the advances in the synthesis of ceria materials with specific morphologies or porous macro- and microstructures for the solar-driven production of carbon monoxide (CO) from carbon dioxide (CO2). As the demand for renewable energ
Externí odkaz:
https://doaj.org/article/ae031a8f6e8942e79f92c9367741484d
Publikováno v:
Applied Sciences, Vol 10, Iss 9, p 2995 (2020)
Reduction of the energy consumption and CO2 emissions by the building sector might be a huge driver to mitigate climate change. One promising approach to mitigate energy consumption is the use of lightweight and low thermal-conductivity materials tha
Externí odkaz:
https://doaj.org/article/d2d59bd72f2e4c1998800b074ec5af87
Publikováno v:
Materiais 2022.
Autor:
Luís A.C. Tarelho, Rui M. Novais, João Carvalheiras, Catarina L. Correia, João A. Labrincha, Maria Paula Seabra, Isabel Capela, Tânia Gameiro
Publikováno v:
Bioprocess and Biosystems Engineering. 44:1167-1183
In anaerobic digestion processes, pH has a vital role due to the direct impacts on the microbial community. An eco-friendly approach has been applied to control pH in anaerobic bioreactors, using waste-containing fly ash geopolymer spheres (GS) inste