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Mostrando ítems 1-10 de 14
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
Photocatalytic degradation of humic acids and landfill leachate using a solid industrial by-product containing TiO2 and Fe
(Elsevier, 2011-02)
Landfill leachates contain a large number of recalcitrant compounds that make it unsuitable for conventional waste water treatment. This work has studied the effectiveness of a treatment method for the degradation of ...
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
A porous geopolymer based on aluminum-waste with acoustic properties
(Elsevier, 2019-07)
Paval, a solid waste stream from the aluminum industry, is used as a pore generation agent in geopolymers. Paval was mixed with coal combustion fly ash, as a geopolymeric precursor, and activated with alkaline solution ...
Artículo
Properties of fly ash and metakaolín based geopolymer panels under fire resistance tests
(Consejo Superior de Investigaciones Científicas (CSIC), 2015)
This paper presents the results of a study about the effect of fire on geopolymer paste composed of fly ashes, metakaolin and sodium silicate. 2 cm thick, 28 cm high and 18 cm wide panels were filled with the paste obtained. ...
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
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
Ammonium Ion Adsorption and Settleability Improvement Achieved in a Synthetic Zeolite-Amended Activated Sludge
(Elsevier, 2013-09)
Municipal wastewater treatment plants typically exhibit two classic problems: high ammonium concentration in water after conventional biological treatment and, in some cases, poor activated sludge sediment ability. Potential ...
Artículo
Fly ash based geopolymeric foams using silica fume as pore generation agent. Physical, mechanical and acoustic properties
(Elsevier, 2018-11)
The aim of this work is the development of a porous geopolymeric foam with sound absorbing properties using silica fume as the pore generation agent. The samples were manufactured using a coal combustion fly ash as source ...