Download or read book Dissolution of gasoline in presence of water and ethanol written by and published by . This book was released on 1905 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Muitos contaminantes orgânicos, incluindo derivados do petróleo, como por exemplo a gasolina, têm baixa solubilidade em água e migram na subsuperfície como uma fase separada da água sendo referidos como NAPLs (non aqueous liquid phases). Em seu processo de migração na subsuperficie os NAPLs deixam para trás segmentos de líquidos disconectados na forma de gânglios ou lentes que constituem a fase residual do contaminante. A presençado contaminante residual constitui-se numa das maiores dificuldades para a implementação de uma técnica adequada de limpeza ou recuperação de locais contaminados, uma vez que tais contaminantes representam uma fonte lenta e continua de contaminação de solos e água subterrânea, especialmente por sua dissolução na água. Nesta tese, estudou-se o efeito do etanol na dissolução de gasolina residual. Tal estudo foi motivado pela necessidade de se obter um melhor entendimento de um cenário decontaminação envolvendo gasolina e etanol uma vez que gasolina com 20% de etanol em sua constituição e etanol puro estão sendo utilizados como combustível, no Brasil, nos últimos 20 anos. O uso de aditivos oxigenados à gasolina, tais como álcoois, objetiva aumentar odesempenho do motor dos automóveis bem como diminuir a emissão de CO2 destes para a atmosfera e este uso vem aumentando em muitos países. Experimentos tipo equilíbrio em lote e experimentos de coluna foram realizados parainvestigar efeitos do etanol na solubilidade de constituintes da gasolina e no coeficiente de transferência de massa da gasolina para fase aquosa. Colunas de solo arenoso com gasolina em saturação residual foram percoladas por soluções aquosas com diferentes teores de etanol. Os resultados das concentrações efluentes de contaminante ao longo do tempo, obtidas destes ensaios, foram interpretados segundo o modelo de dissolução proposto por Frind et al. (1997), modificado nesta tese para considerar os efeitos de cosolvência do etanol na solubilidade dos constituintes da gasolina. Os resultados experimentais obtidos indicam que um cenário de contaminação envolvendoetanol e gasolina deverá ser bastante diferente daquele de contaminação usual de gasolina. Em um cenário de contaminação envolvendo etanol e gasolina, concentrações mais altas de contaminantes na água serão esperadas bem como diferentes constituintes da gasolina, além do tradicional grupo BTEX (benzeno, tolueno, etilbenzeno e os isômeros xilenos) deverão estar presentes na água em concentrações nocivas ao meio ambiente.
Download or read book Dissolved Gas Concentration in Water written by John Colt and published by Elsevier. This book was released on 2012-01-17 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquacultural, oceanographic, and fisheries engineering, as well as other disciplines, require gas solubility data to compute the equilibrium concentration. These calculations, for example, can affect the output of aquacultural production or assist in environmental consulting. Until now, published solubility information has not been available in a consistent and uniform manner in one location. This book presents solubility concentrations of major atmospheric gases (oxygen, nitrogen, argon, carbon dioxide), noble gases (helium, neon, krypton, xenon), and trace gases (hydrogen, methane, nitrous oxide) as a function of temperature, salinity, pressure, and gas composition in a variety of formats. Data, equations, and theory are explained so that the user is able to understand the calculations and problems. Furthermore, data and solubility information are presented in a range of units to make them accessible across disciplines. This book will help the reader to look at a problem from a quantitative viewpoint and better understand carbonate chemistry. Revised from the earlier edition to include more accurate carbon dioxide tables and separate sections on the solubility of noble gases, trace gases, and oxygen in brines to provide a single resource for gas solubility data. This book is essential for all students and practitioners working in aquatic fields. - A single source for highly accurate and comprehensive tables for gas solubility in aquatic systems - Information provided in tables, equations, and computer programmes - Theory is presented to better understand the equations and calculations
Download or read book Identification of Probable Automotive Fuels Composition 1985 2000 written by Southwest Research Institute and published by . This book was released on 1978 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Gasohol Motor Fuel Act of 1978 written by United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Energy Research and Development and published by . This book was released on 1978 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gas Solubilities written by William Gerrard and published by Pergamon. This book was released on 1980 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas Solubilities: Widespread Applications discusses several topics concerning the various applications of gas solubilities. The first chapter of the book reviews Henr's law, while the second chapter covers the effect of temperature on gas solubility. The third chapter discusses the various gases used by Horiuti, and the following chapters evaluate the data on sulfur dioxide, chlorine data, and solubility data for hydrogen sulfide. Chapter 7 concerns itself with solubility of radon, thoron, and actinon. Chapter 8 tackles the solubilities of diborane and the gaseous hydrides of groups IV, V, and ...
Download or read book Problems of miscibility of gasoline ethanol blends in presence of water written by Bachan S. Rawat and published by . This book was released on 1979 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermodynamics Solubility and Environmental Issues written by Trevor Letcher and published by Elsevier. This book was released on 2007-04-20 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental problems are becoming an important aspect of our lives as industries grow apace with populations throughout the world. Thermodynamics, Solubility and Environmental Issues highlights some of the problems and shows how chemistry can help to reduce these them. The unifying theme is Solubility – the most basic and important of thermodynamic properties. This informative book looks at the importance and applications of solubility and thermodynamics, in understanding and in reducing chemical pollution in the environment. Written by experts in their respective fields and representing the latest findings in this very important and broad area. A collection of twenty-five chapters cover a wide range of topics including; mining, polymer manufacture and applications, radioactive wastes, industries in general, agro-chemicals, soil pollution and biology, together with the basic theory and recent developments in the modelling of environmental pollutants. - Latest research into solving some of the most important environmental problems - Covering new technologies, new chemicals and new processes eg, biodegradable polymers, ionic liquids and green chemistry - Contains the basic theories and underlying importance of solubility
Download or read book Chemistry 2e written by Paul Flowers and published by . This book was released on 2019-02-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry 2e is designed to meet the scope and sequence requirements of the two-semester general chemistry course. The textbook provides an important opportunity for students to learn the core concepts of chemistry and understand how those concepts apply to their lives and the world around them. The book also includes a number of innovative features, including interactive exercises and real-world applications, designed to enhance student learning. The second edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Substantial improvements have been made in the figures, illustrations, and example exercises that support the text narrative. Changes made in Chemistry 2e are described in the preface to help instructors transition to the second edition.
Download or read book Chemistry Life the Universe and Everything written by Melanie Cooper and published by . This book was released on 2014-06-27 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: As you can see, this "molecular formula is not very informative, it tells us little or nothing about their structure, and suggests that all proteins are similar, which is confusing since they carry out so many different roles.
Download or read book Behaviour of Oxygenates and Aromatic Hydrocarbons in Groundwater from Gasoline Residuals written by Marian Mocanu and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elementary Thermodynamics of Automobile Engines written by Erwin Hugh Hamilton and published by . This book was released on 1923 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remedial Action Treatment and Disposal of Hazardous Waste written by and published by . This book was released on 1990 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Problem of Miscibility of Gasoline Ethanol Blends in Presence of Water written by B. S. Rawat and published by . This book was released on 1981 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of Industrial and Engineering Chemistry written by and published by . This book was released on 1913 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Chemical Society written by Chemical Society (Great Britain) and published by . This book was released on 1891 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Outlines of theoretical chemistry written by Frederick Hutton Getman and published by . This book was released on 1913 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Age written by and published by . This book was released on 1923 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
