Industrial Minerals
Mostrando 13-24 de 55 artigos, teses e dissertações.
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13. Effect of the Acid Treatment of Montmorillonite Clay in the Oleic Acid Esterification Reaction
Biodiesel is a fuel renewable, biodegradable and environmentally correct fuel, which can be obtained from the esterification reactions, transesterification and pyrolisis. Montmorillonite is a clay mineral of the smectite group and are of great interest for industrial processes such as catalysis and adsorption. Acid activation of clay minerals is one of the m
Mat. Res.. Publicado em: 2015-04
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14. Inovação para a sustentabilidade
The transition to sustainable standards of production and consumption within a scenario of decreased availability of natural resources, growing population and climate change is essential to meet current challenges facing mankind. A strategy to meet these challenges should contain elements different from current approaches for industrial production. This work
Quím. Nova. Publicado em: 2013
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15. Análise da qualidade de gelatina obtida de tarsos de frango e aspectos envolvidos no processo produtivo. / Quality analysis of gelatin made from chicken feet and production process aspects
This study features gelatin production as a new possibility in the production chain of broilers, through the use of chicken by-products. Given the lack of other works on sensory analysis of gelatins made with collagen extracted from chicken feet, the objective of this study was to assess the acceptability of that gelatin by evaluating its sensory qualities t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/01/2012
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16. Aspectos sócio-econômico-ambiental do processo de extração do caulim no município de Junco do Seridó-PB
The paper entitled "Socio-Economic and Environmental Process Extraction of Kaolin in the Municipality of Junco do Seridó/PB" is a guided study on the extraction of kaolin in the municipality of Junco do Seridó/PB, which is the largest production center of this mineral in the state Paraíba. This activity is the basis of an extensive and complex supply chai
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
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17. Contribuição ao estudo das bentonitas do município de Boa Vista Estado da Paraíba. / Contribution to the study of bentonite in Boa Vista state of Paraíba.
The clays are composed of clay minerals and accessory minerals, whose crystal structure allows the adsorption of cations giving them particular physical and chemical properties. Chemically, the argilomineriais are formed mainly of hydrated silicates of aluminum, iron and magnesium. The bentonites are special types of industrial clays because submitting more
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2011
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18. RemoÃÃo de BTEX em SoluÃÃo Aquosa por AdsorÃÃo usando ZeÃlita SintÃtica Modificada. / Removal of BTEX in aqueous solution by adsorption using synthetic zeolite modified.
BTEX (benzene, toluene, ethylbenzene and xylenes) are organic compounds of particular concern due to their toxicity. BTEX occur in the environment as products of incomplete oxidation of fossil fuels, thus polluting the atmosphere. Also, the disposal of industrial effluents, oil spills, and fuels leaks at gas stations are sources of BTEX contamination in soil
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2011
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19. Adsorção de Pb(II) utilizando adsorvente composto por montmorilonita e dolomita / Adsorção de Pb(II) utilizando adsorvente composto por montmorilonita e dolomita
O impacto destrutivo da disposição inadequada de metais pesados no meio ambiente aumenta como resultado direto da explosão populacional, urbanização e expansão industrial e tecnológica. Argilas são potenciais materiais para adsorção de compostos inorgânicos e a pelletização destes é necessária para utilização em colunas adsortivas de leito f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2011
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20. Characterization of the Taubaté Sedimentary Basin viewing to enchance its use for glass manufacturing. / Caracterização de depósitos de areia da Bacia Sedimentar de Taubaté para a fabricação de vidros.
The focus was the characterization of the Taubaté Sedimentary Basin viewing to enhance its use for glass manufacturing. The field work consisted in the sampling of the product from seven operating sand mines, in their previous characterization and in the choice of a sample, the grain size distribution of which were closer to those specified for manufacturin
Publicado em: 2011
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21. Concentrações e associações geoquímicas de Pb e Zn em sedimentos do rio São Francisco impactados por rejeitos da produção industrial de zinco
Surface sediments from the River São Francisco were analyzed to investigate the impact, due to the presence of metals (Cd, Cu, Pb, Zn) in wastes from a metallurgical industry in the city of Três Marias/MG, Brazil. The concentrations and geochemical associations of Pb, Zn and trace metals associated with the minerals employed in zinc production were measure
Química Nova. Publicado em: 2010
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22. Rede neural artificial para monitoramento em tempo real da concentração de potássio na vinhaça in natura / Artificial neural network for real-time monitoring of the concentration of potassium in the stillage in natura
The cultivation of sugar cane (Saccharum officinarum) has significant presence in Brazils history, from colonization. In its industrial process, are obtained the following products: sugar, ethanol (anhydrous and hydrated), and its main products are: marc - used for power generation - and stillage - re-applied as fertilizer in farming. The use of vinasse on t
Publicado em: 2010
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23. O Brasil nas Exposições Universais (1862 a 1911) : mineral , negocios e publicações / Brazil at the Word s Fair (1862 a 1911) : mining, business and publications
This dissertation studies the sending of mineral samples to the World s Fair between the London Fair in 1862 and the Turim Fair in 1911. Our hypothesis is that the participation at the World s was part of the efforts to recuperate and develop the mining sector in Brazil. With three different phases, the Brazilian participation at the World s Fair passed by e
Publicado em: 2009
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24. Caracterização de cogumelos de Pleurotus ostreatus e Lentinula edodes produzidos em resíduos agroindustriais / Characterization of mushrooms of Pleurotus ostreatus and Lentinula edodes produced in agro-industrial wastes
Mushrooms were known and consumed by the Roman, Greek, Chinese, Egyptian and Central America civilizations. Today, more than two thousand species of potentially edible mushrooms are recognized, however, a little more than 10 are commercially exploited in the world. The consumption of mushrooms has been increasing because of the nutritional and medicinal qual
Publicado em: 2009