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Mostrando ítems 1-10 de 17
Artículo
Immobilization of heavy metals (Cd, Ni or Pb) using aluminate geopolymers
(Elsevier, 2018-09)
In the present study, a waste aluminate solution from the anodizing industry was used to synthesize coal fly ash- and blast furnace slag-based geopolymers as metal-immobilizing matrixes. Different alkali-activating agents ...
Artículo
Characterization of Compounds Formed and Added on Surface of Outdoor Seville City Hall
(Elsevier, 2013)
The study of the stone surface was helpful before the restoration of the Sevilla City Hall façade. This study supplied information of the environmental factors affecting the stone and the restoration treatments used in ...
Artículo
Demonstration Plant Equipment Design and Scale-Up from Pilot Plant of a Leaching and Solvent Extraction Process
(MDPI, 2015-05-28)
Germanium recovery from coal fly ash by hydrometallurgical procedures was studied at the pilot scale (5 kg of fly ash/h). Results were used to design the equipment of a demonstration-sized plant (200 kg of fly ash/h). ...
Artículo
Influencia del diámetro y color de plantillas reductoras de la superficie de proyección de los colorímetros en la medida del color de una superficie
(2008)
En los colorímetros que existen en el mercado, la luz se recoge mediante un tubo de cierto diámetro y los valores de las coordenadas cromáticas que da el medidor son una media de las obtenidas en dicha superficie. ...
Artículo
Environmental risks and mechanical evaluation of recycling red mud in bricks
(Elsevier, 2020-07)
More and more by-products are being used in certain materials, especially in the construction industry. Natural construction materials contain amounts of heavy metals and radionuclides, but when by-products are used in ...
Artículo
Coal Combustion and Gasification Products
(University Kentucky, 2010)
The valorization of a coal gasification fly ash was studied by leaching the fly ash using different aqueous solutions followed by the subsequent precipitation of the germanium solubilized from the ash. Experimental ...
Artículo
Bioenergy production side-streams availability assessment as decision making driver for sustainable valorisation technologies development. Case study: Bioethanol and biodiesel industries
(Elsevier, 2022)
Recently, biorefineries have emerged globally as an attractive alternative to conventional fuel production, but costs still need to be competitive. Latest policy actions such as the Green Deal or the Circular Economy Action ...
Artículo
Application of biomass gasification fly ash for brick manufacturing
(Elsevier, 2011)
Biomass gasification technology offers an attractive way to use low-grade fuels in energy production with high efficiency and low environmental impact. However, an issue calling for further development is the volume and ...
Artículo
Low environmental impact process for germanium recovery from an industrial residue
(Elsevier, 2018-11)
This paper focused on the germanium recovery from an Integrated Gasification with Combined Cycle fly ash (IGCC FA). The global process comprised the leaching of the IGCC fly ash with an aqueous solution containing tartaric ...
Artículo
Development of fly ash-based geopolymers using powder sodium silicate activator
(Elsevier, 2022-08)
Geopolymer manufacturing by means a ready-mix procedure using powder sodium silicate as activator is described in this paper. Its characteristics are compared with conventional geopolymers using aqueous sodium silicate. ...