Environment Cleanup
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. APLICAÇÃO DE ÓXIDOS DE FERRO NANOESTRUTURADOS COMO ADSORVENTES E FOTOCATALISADORES NA REMOÇÃO DE POLUENTES DE ÁGUAS RESIDUAIS
New techniques for treating wastewater, particularly the removal or degradation of organic pollutants and heavy metals, among other pollutants, have been extensively studied. The use of nanostructured iron oxides as adsorbent and photocatalyst for the removal of these contaminants has proved a promising approach, not only because of their high treatment effi
Quím. Nova. Publicado em: 2015-03
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2. Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostra na determinação de fármacos no ambiente / Development and application of microextraction sample preparation techniques to determine pharmaceutical drugs in the environment
The occurrence of pharmaceutical drugs in the environment is a worldwide problem caused by the genotoxicity and ecotoxicity activities of those compounds. Water is one of most used natural resource in human activities which explain the presence of emerging contaminants. Those compounds affect not only humans but also aquatic animals that spend the whole life
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2012
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3. Toxic Effects of Benzo(a)pyrene on the Red Macroalga Gracilaria birdiae / Efeitos tóxicos de benzo(a)pireno sobre a macroalga vermelha Gracilaria birdiae
Algae show a great biodiversity and occupy many different ecological niches. Besides being essential for the maintenance that allow life on Earth, algae are on the basis of aquatic food chains and they suffer with continuous residue discharge that comes from different human activities. However, once algae are exposed to pollutants, biomarkers can indicate it
Publicado em: 2010
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4. Development of methodology simple, fast and without the clean-up step for determination of glyphosate in environmental samples of water and soil by HPLC / UV-VIS / Desenvolvimento de metodologia simples, rápida e sem etapa de clean-up para determinação de glifosfato em amostras ambientais de água e solo por HPLC/UV-VIS
Glyphosate, N-(phosphonometil)glycine, is a systemic herbicide and post-emergent with great efficiency in the removal of weeds, featuring low cost, which is reflected on its wide application. Due to this fact, special care in order to not contaminate the environment has to be attend, since there is evidence of deleterious effects on the environment after its
Publicado em: 2009
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5. Uptake of Hg2+ from aqueous solutions by microporous titano- and zircono-silicates
Being mercury one of the most toxic heavy metals present in the environment, it is of major concern to develop cleanup technologies to remove it from wastewater and recover mercury polluted ecosystems. In this context, we study the potential of some microporous titanosilicates and zirconosilicates for taking up Hg2+ from aqueous solutions. These materials ha
Química Nova. Publicado em: 2008
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6. "Metodologia para Determinação de Hidrocarbonetos Policíclicos Aromáticos em Sedimentos e Solos Periféricos à Represa São Pedro Juiz de Fora, MG"
Polycyclic Aromatic Hydrocarbons are important substances that are produced by many antropogenic sources, among that, the most significant is burns of fossil fuels and biomass which releases these compounds to the environment. Sediments and soils are important matrix to study contamination and their effects because they are able to adsorb organic compounds s
Publicado em: 2008
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7. Adsorption isotherm studies of Cd (II), Pb (II) and Zn (II) ions bioremediation from aqueous solution using unmodified and EDTA-modified maize cob
The need to clean-up heavy metal contaminated environment can not be over emphasized. This paper describes the adsorption isotherm studies of Cd (II), Pb (II) and Zn (II) ions from aqueous solution using unmodified and EDTA-modified maize cob. Maize cob was found to be an excellent adsorbent for the removal of these metal ions. The amount of metal ions adsor
Eclética Química. Publicado em: 2007
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8. Determination of organochlorine compounds and polycyclic aromatic hidrocarbons in Lagoa de Carapicuiba- SP / Determinação de compostos organoclorados e hidrocarbonetos poliaromáticos na Lagoa de Carapicuíba - SP
In 2002, started the workmanships of widening and deepening of the gutter of the river Tietê in the metropolitan area of Sao Paulo, as a tool to prevent the periodic floods that happen in this region. A large amount of sediment, rocks and garbage have been removed from the river and this same material has been deposited in the lagoa de Carapicuíba, which s
Publicado em: 2007
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9. Synthesis and characterization of nanostructured iron power for environmental remediation / Estudo do comportamento químico do ferro micro e nano particulado na despoluição de solos contaminados com metais pesados
The nanostructured iron has been of very interest because of their excellent chemistry properties and potential applications in areas as biomedical, catalysis and environmental engineering. One of expressive applications is its use as a catalyst for CVD synthesis of multi-walled carbon nanotubes and in remediation of contaminants from wastewater and soil. Th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/12/2006
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10. Synthesis and characterization of nanostructured iron power for environmental remediation / Estudo do comportamento químico do ferro micro e nano particulado na despoluição de solos contaminados com metais pesados
O poder do ferro nanoparticulado apresenta uma nova geração de tecnologia para remediação ambiental, que deverá promover soluções relevantes na limpeza de solos ou áreas contaminadas por despejos de indústrias galvânicas, fertilizantes, curtumes, mineração e outros passivos ambientais relacionados à poluição, com metais pesados perigosos. Os e
Publicado em: 2006
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11. Estudo do comportamento químico do ferro micro e nano particulado na despoluição de solos contaminados com metais pesados / Synthesis and characterization of nanostructured iron power for environmental remediation
O poder do ferro nanoparticulado apresenta uma nova geração de tecnologia para remediação ambiental, que deverá promover soluções relevantes na limpeza de solos ou áreas contaminadas por despejos de indústrias galvânicas, fertilizantes, curtumes, mineração e outros passivos ambientais relacionados à poluição, com metais pesados perigosos. Os e
Publicado em: 2006
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12. ESPECIAÇÃO DE COMPOSTOS BUTÍLICOS ESTANHO EM SEDIMENTOS SUPERFICIAIS DA BAÍA DE TODOS OS SANTOS / ESPECIATION OF ORGANOTIN COMPOUNDS IN SURFACE SEDIMENTS OF TODOS OS SANTOS BAY
The organotin compounds such as tributyltin (TBT) present in anti-fouling paints applied to ships, pleasure boats and vessels are proved to have harmful effects on the reproduction and the growth of several forms of marine life. In response to this environmental threat many countries introduced restriction to their use or even banishment. In Brazil there are
Publicado em: 2005