Rui M. Novais

TL;DR: In this article, fly ash-based monoliths were used as adsorbents for the removal of methylene blue from synthetic wastewaters, and the maximum uptake reported was 15.4 mg/g.

TL;DR: These novel geopolymeric monoliths can be used in packed beds that are easily collected when exhausted, which is a major advantage in comparison with the use of powdered adsorbents, and their production encompasses the reuse of biomass fly-ash, mitigating the environmental impact associated with this waste disposal, while decreasing the adsorbent production costs.

TL;DR: In this paper, porous biomass fly ash-based geopolymers were produced by using hydrogen peroxide as pore forming agent, which can help to mitigate the energy losses inside buildings, while simultaneously reducing the volume of generated wastes, thus contributing towards sustainable construction.

TL;DR: Geopolymer foams have emerged as one of the most exciting materials over the past few years due to their remarkable properties, low cost and green synthesis protocol, enabling their use in various high added-value applications.

TL;DR: In this article, fly ash (FA)-based adsorbents were used to extract methylene blue from synthetic wastewaters, and the influence of sorption time, dye initial concentration and adsorbent amount on the dye removal efficiency and uptake by the porous spheres was evaluated.