Navegando por Assunto "Reaproveitamento (Sobras, refugos, etc.)"

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Contribuições de intervenção artístico-pedagógico voltada para o reaproveitamento de materiais
(2018) Leite, Leila Silva; Lira, Rafael Pereira de; http://lattes.cnpq.br/4601784121439123
The accumulation of solid waste has been one of the environmental problems of the planet and the reuse of materials in the teaching of the arts comes as a solution to this problem. From the Industrial Revolution, with the use of machines and the production of products and packages in series, increased the accumulation of garbage, allied to programmed obsolescence and exaggerated consumerism, instigated by the system through the media. Art appears in this context as a source of awareness and development of more critical and ethical attitudes in its viewers about environmental problems. Therefore, a study was carried out at a public school of the Bahia state network in the city of Planalto, with students participating in the arts workshops of the Innovative High School Program (PROEMI), in order to show how reuse of materials in arts classes, contribute to awareness, and present solutions for students and the community, effectively tackling the problem with local waste.
Estudo de viabilidade do uso de areia residual da produção de silicato de sódio no processo produtivo
(2024-09-23) Abreu, Giovanna Pereira de; Gomes, Maria José de Filgueiras; http://lattes.cnpq.br/0060810526769648; http://lattes.cnpq.br/7823109121355746
Sand is the main raw material used in the production of sodium silicate. However, the sand waste generated by the silicate industries is a constant and significant problem, with an average annual disposal of 142 tons. Therefore, it is necessary to promote the reduction of this waste through available practices for proper disposal or, when possible, reuse it, given that it can cause negative impacts on the environment. In addition, reusing sand also has the benefit of reducing production costs, since it can be reincluded in the process without compromising yield. In this sense, it is of great relevance to create sustainable solutions capable of efficiently addressing the social, environmental and economic challenges involved and which can be applied in industries. The aim of this work was to evaluate the reuse of this industrial waste and study its reuse in new reactions aimed at the production of sodium silicate. For this purpose, the residue was subjected to a washing process, followed by titrimetric tests, in triplicate, to determine the Na₂O content in the water washing, using 2.0N HCl as titrant, resulting in an average value of 12.80%. X-ray fluorescence tests were also performed on the solid part after washing, indicating a SiO₂ percentage of 99.009%, a value comparable to that of virgin sand, whose SiO₂ content varies between 98.00% and 100.00%, which demonstrates that the results obtained in the residue presented satisfactory results. Based on a formulation suggested in this research, it can be concluded that the reuse of sand in the sodium silicate production process could promote a cost reduction of R$9,870 per batch, representing an annual saving of R$259.670,4, integrating sustainable practices and cost reduction in silicate production.