Rio de Janeiro: ABNT (NBR ) (In Portuguese) 7. Brazilian Association of extract from solid residues. Rio de Janeiro: ABNT (NBR ). Brazilian Association of Technical Norms, in ABNT NBR Procedure for obtention leaching extract of solid wastes (Rio de Janeiro, ), p. 16 8. ABNT NBR , Solid Waste: Classification, Brazilian Association of Technical Standards, Rio de Janeiro, Brazil. ABNT NBR , Leaching of.
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It is a flux waste the silica base when sintered forms a qbnt phase, decreases the porosity of the material, and causing a sintering faster or at a lower temperature. The ideal moisture for making these specimens is determined by the Pfefferkorn plasticity assay.
The panel glass did not present any leached lead, which is logical, since no lead was found in the previous XRF Table 4.
Revista Escola de Minas, 68 3 Extraction and concentration of silver from waste crystalline silicon photovoltaic modules, Waste Management, 57,On line at: The results of mechanical strength obtained by the diametrical compression method and the water absorption presented in the graph Figure 4. Porto Alegre, RS, Brazil.
Therefore, innovative approaches to the production of heavy clay ceramics that are less dependent on virgin sources are highly encouraged from the perspective of protecting natural resources and sustainable development. Being a ratio of the initial measure to the final. Part I Goethite samples of varying crystallinity. The graph of Figure 2 shows the results of total linear thermal retraction drying and firing of the formulations and standard mass STD used in the study.
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The results expressed in Figure 1 indicate that samples containing approximately After the burn, the samples were characterized by linear retraction of burning, loss of ignition, mechanical resistance to flexion diametric compression in a universal machine of mechanical tests EMIC model DL and water absorption.
Effect on aesthetic quality and physical properties. Best results were observed in sample F that was processed with the following parameters: How to cite this article. The glass has three components: Wastes that are not characterized in the NBR should be classified according to their leaching potential, which is abjt using the NBR Where it was possible to decrease the water absorption and increase the mechanical strength.
The ceramic residue used in this work provided by a Qbnt company from Santa Catarina state from the abnh of washing and residues of enamels.
Figure 2 Linear thermal retraction of the formulations studied. The ceramic mass supplied by a ceramic company from South of Santa Catarina, Brazil used for the manufacture of structural blocks. It is possible to observe that in the linear retraction of drying the results decrease with the increase of ahnt added waste.
The conformation was formulated using a laboratory press with a capacity of 15 abnh. Thermochimica Actav. Thus, the lead removal conditions were not effective to downgrade the hazardousness of the waste. Lead is also toxic for other animal cells and plants Menad, Thermal behavior in air of iron oxyhydroxides obtained from the method of homogeneous precipitation.
Study for vitreous waste recovery in the formulation of heavy clay ceramics
Okada extracted lead from the glass of CRT by using hydrochloric acid and by melting the glass under different oxidizing conditions. This content is the standard for the accomplishment of the conformation of the specimens. Despite having proper landfills for the disposal of CRT monitors, most of them end up in improper landfills or in no landfill at all Oliveira, The next step was intended to evaluate whether the lead removal had been able to convert the CRT from a hazardous waste to a non-hazardous waste according to the Brazilian regulation.
Leaching tests, solubilization, classification and industrial solid wastes.
Lead hazard evaluation for cathode ray tube monitors in Brazil
As abnnt in several international publications, waste of CRT monitors represents an environmental threat and yet it has not been classified under Brazilian law.
These tailings have the potential to be used as an alternative raw material in the manufacture of heavy clay ceramics and therefore, from a manufacturing point of view, can be used as a great flux that still generates improvements in the characterization of the final product and gains in sustainable marketing.
The samples were placed inside alumina crucibles, which were then placed inside the furnace. These devices became obsolete because of emerging technologies such as LCD, LED and plasma; thus generating a huge stockpile of e-waste worldwide.
The 100005 was classified based on the American methodology SW B, 29 and the Brazilian technical references: This is an open access article distributed under the terms of the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, and build upon your work non-commercially.
Formulations F5 and F6 showed higher strength 5. Environmental profile abt ceramic tiles and their potential for improvement.
Characteristics of fired bricks with co—combustion fly ashes. August 07, Published: