Radioactive Waste
Mostrando 13-24 de 47 artigos, teses e dissertações.
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13. Implementação e aplicação de metodologia para dosagem de metais e não metais em águas de drenagem de solo adubados com fosfogesso
Phosphogysum is a waste generated in phosphoric acid production by the wet process. The immense amount of phosphogysum yearly produced (around 150 million tons) is receiving attention from environmental protection agencies all over the word, given its potential of contamination. In Brazil, this material has been used for many decades, especially for agricult
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2010
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14. Biomassa residual para remoção de íons uranilo
Activities related to nuclear industry, production of phosphoric acid and hospitals have generated considerable volumes of radioactive waste containing uranyl ions. Banana pith was characterized by Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy and was investigated as a biosorbent for uranyl ions from nitric solutions by batch exper
Química Nova. Publicado em: 2010
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15. Qualidade da água potável consumida na Cidade do Salvador - Bahia
The research talks about the drinking water which is consumed in Salvador city and presents the main health consequences of the contaminants that can be found in the water and the prevention measurements more suitable to remove them. Contaminations which can be found in the water sources come from the growth industrial activities, synthetic agriculture compo
Publicado em: 2010
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16. Biodegradação de rejeitos radioativos líquidos orgânicos provenientes do reprocessamento do combustível nuclear / Biodegradation of radioactive organic liquid waste from spent fuel reprocessing
O reprocessamento do elemento combustível constitui uma das etapas do ciclo do combustível e tem por objetivo separar U 235, U238 e Pu239 dos produtos de fissão contidos no elemento combustível queimado para reutilizá -los na fabricação de novos elementos combustíveis. No Brasil, o desenvolvimento do reprocessamento teve início nos anos 70 com a imp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/11/2008
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17. Proposal of implementation of environmental management system the laboratory of radioactive waste in IPEN-SP / Proposta de implantação de um sistema de gestão ambiental no laboratório de rejeitos radioativos do IPEN-SP
Constata-se, atualmente, um uso crescente da energia nuclear no Brasil, para geração de eletricidade e outras aplicações (na medicina, na indústria, em agricultura, em técnicas ambientais, em radio-esterilização). Na realização das atividades de pesquisa do ciclo do combustível nuclear, em outras atividades de pesquisa, nas atividades industriais
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2008
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18. Gestão de rejeitos radioativos em serviços de medicina nuclear / Gestão de rejeitos radioativos em serviços de medicina nuclear
Radioisotope applications in nuclear medicine services, for diagnosis and therapy, generate radioactive wastes. The general characteristics and the amount of wastes that are generated in each facility are function of the number of patients treated, the procedures adopted, and the radioisotopes used. The management of these wastes embraces every technical and
Publicado em: 2008
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19. Chemical waste generated in laboratories of UNICAMP management inventory and evaluattion / Residuo quimico gerado em laboratorios da UNICAMP : inventario e avaliação de seu gerenciamento
The chemical waste has emphasize among the generated waste types due, many times, to its high hazard degree. In this work an inventory of chemical waste active generated in laboratories of four UNICAMP Units was realized. It was inventoried and valuated the chemical waste generation from analysis realized in laboratories that more generate waste in Units sel
Publicado em: 2008
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20. Estudo da imobilização de rejeitos radioativos em matrizes asfálticas e resíduos elastoméricos utilizando a técnica de microndas / STUDY OF IMMOBILIZATION OF RADIOACTIVE WASTES IN ASPHALTIC MATRICES AND ELASTOMERIC RESIDUES BY USING MICROWAVE TECHNIQUE
In the present work, the technique of microwave heating was used to study the immobilization of low and intermediate activity level radioactive waste, such as spent ion exchange resin used to remove undesirable ions of primary circuits of refrigeration in water refrigerated nuclear reactors, and those used in chemical and radionuclide separation columns in t
Publicado em: 2007
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21. Estudo de sorção de césio e estrôncio em argilas nacionais para sua utilização como barreira em repositórios de rejeitos radioativos / Study of cesium and strontium sorption in brazilian clays for their use as a barrier in repositories of radioactive wastes
Wastes in general should be properly treated and stored. Then the radioactive wastes also rquire suitable and safe management beginning in their generation until the storage in repository. The main purpose of the radioactive waste management is to preserve the human beings and the environment. The objective of this research ws to characterize some brasilian
Publicado em: 2007
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22. Aditivação de pastas geopoliméricas com tetraborato de sódio e látex não iônico para cimentação de Poços de Petróleo
The development of activities in the oil and gas sector has been promoting the search for materials more adequate to oilwell cementing operation. In the state of Rio Grande do Norte, the cement sheath integrity tend to fail during steam injection operation which is necessary to increase oil recovery in reservoir with heavy oil. Geopolymer is a material that
Publicado em: 2007
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23. Processos redoxes de ferro em argilominerais: caracterização, métodos de quantificação, especiação e modificações estruturais
Redox processes within clays and clay minerals influence significantly in different physical and chemical properties in soils and sediments, mainly which ones related to the chemical interaction between solid and solution phases (liquid or gas) such as superficial charge and ion dynamics. Other, like expansibility, water retention capacity, surface area, and
Publicado em: 2007
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24. Implementação de um sistema unificado para gerenciamento de rejeitos / Implementation of a unified system to waste management
The process of generation and disposal of wastes has been responsible for many economical, ecological and public health problems, although the importance of its safe management for the protection of human health and the environment has long been recognized. In order to manage the hazardous wastes in an environmentally-friendly manner, many technical and admi
Publicado em: 2006