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Author: Juan Escobar Arnanz
Publisher:
ISBN:
Category :
Languages : es
Pages : 322
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Book Description
La cromatografía de gases (GC) es una técnica analítica ampliamente aceptada para la resolución de mezclas de relativa complejidad en la que la identificación se basa en la comparación de los tiempos de retención de los analitos con los de patrones adecuados analizados en las mismas condiciones. Sin embargo, cuando la complejidad de las mezclas estudiadas aumenta, la posibilidad de coelución de los analitos de interés con otros componentes de la mezcla o de la matriz presentes en el extracto también aumenta. Es en estos casos cuando es necesario recurrir a un mecanismo diferente de separación, que pueda dar lugar a una mejor resolución de los compuestos de interés de otros presentes en el extracto a analizar, o incorporar un criterio adicional de separación o identificación que permita evitar ambigüedades en la determinación de los componentes del extracto. Las técnicas multidimensionales resultantes de esta última aproximación permiten una determinación más fidedigna de los analitos al basar su identificación en al menos dos criterios independientes. En el caso de la GC, la multidimensionalidad puede venir dada por su acoplamiento con una segunda técnica de separación cromatográfica o con una técnica de espectrometría de masas (MS) que aporte información estructural referente al analito que eluye de la columna cromatográfica a un tiempo determinado...
Author: Juan Escobar Arnanz
Publisher:
ISBN:
Category :
Languages : es
Pages : 322
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Book Description
La cromatografía de gases (GC) es una técnica analítica ampliamente aceptada para la resolución de mezclas de relativa complejidad en la que la identificación se basa en la comparación de los tiempos de retención de los analitos con los de patrones adecuados analizados en las mismas condiciones. Sin embargo, cuando la complejidad de las mezclas estudiadas aumenta, la posibilidad de coelución de los analitos de interés con otros componentes de la mezcla o de la matriz presentes en el extracto también aumenta. Es en estos casos cuando es necesario recurrir a un mecanismo diferente de separación, que pueda dar lugar a una mejor resolución de los compuestos de interés de otros presentes en el extracto a analizar, o incorporar un criterio adicional de separación o identificación que permita evitar ambigüedades en la determinación de los componentes del extracto. Las técnicas multidimensionales resultantes de esta última aproximación permiten una determinación más fidedigna de los analitos al basar su identificación en al menos dos criterios independientes. En el caso de la GC, la multidimensionalidad puede venir dada por su acoplamiento con una segunda técnica de separación cromatográfica o con una técnica de espectrometría de masas (MS) que aporte información estructural referente al analito que eluye de la columna cromatográfica a un tiempo determinado...
Author: Metcalf & Eddy, Inc., an AECOM Company
Publisher: McGraw Hill Professional
ISBN: 0071508775
Category : Technology & Engineering
Languages : en
Pages : 1610
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Book Description
An Integrated Approach to Managing the World's Water Resources Water Reuse: Issues, Technologies, and Applications equips water/wastewater students, engineers, scientists, and professionals with a definitive account of the latest water reclamation, recycling, and reuse theory and practice. This landmark textbook presents an integrated approach to all aspects of water reuse _ from public health protection to water quality criteria and regulations to advanced technology to implementation issues. Filled with over 500 detailed illustrations and photographs, Water Reuse: Issues, Technology, and Applications features: In-depth coverage of cutting-edge water reclamation and reuse applications Current issues and developments in public health and environmental protection criteria, regulations, and risk management Review of current advanced treatment technologies, new developments, and practices Special emphasis on process reliability and multiple barrier concepts approach Consideration of satellite and decentralized water reuse facilities Consideration of planning and public participation of water reuse Inside This Landmark Water/Wastewater Management Tool • Water Reuse: An Introduction • Health and Environmental Concerns in Water Reuse • Technologies and Systems for Water Reclamation and Reuse • Water Reuse Applications • Implementing Water Reuse
Author: Mogens Henze
Publisher: IWA Publishing (International Water Assoc)
ISBN:
Category : Science
Languages : en
Pages : 170
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Book Description
For information on the online course in Biological Wastewater Treatment from UNESCO-IHE, visit: http://www.iwapublishing.co.uk/books/biological-wastewater-treatment-online-course-principles-modeling-and-design Over the past twenty years, the knowledge and understanding of wastewater treatment have advanced extensively and moved away from empirically-based approaches to a first principles approach embracing chemistry, microbiology, physical and bioprocess engineering, and mathematics. Many of these advances have matured to the degree that they have been codified into mathematical models for simulation with computers. For a new generation of young scientists and engineers entering the wastewater treatment profession, the quantity, complexity and diversity of these new developments can be overwhelming, particularly in developing countries where access is not readily available to advanced level tertiary education courses in wastewater treatment. Biological Wastewater Treatment addresses this deficiency. It assembles and integrates the postgraduate course material of a dozen or so professors from research groups around the world that have made significant contributions to the advances in wastewater treatment. The book forms part of an internet-based curriculum in biological wastewater treatment which also includes: Summarized lecture handouts of the topics covered in book Filmed lectures by the author professors Tutorial exercises for students self-learning Upon completion of this curriculum the modern approach of modelling and simulation to wastewater treatment plant design and operation, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks or biofilm systems, can be embraced with deeper insight, advanced knowledge and greater confidence.
Author: Piet Lens
Publisher: IWA Publishing
ISBN: 1843391007
Category : Science
Languages : en
Pages : 545
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Book Description
Soil and Sediment Remediation discusses in detail a whole set of remediative technologies currently available to minimise their impact. Technologies for the treatment of soils and sediments in-situ (landfarming, bioscreens, bioventing, nutrient injection, phytoremediation) and ex-situ (landfarming, bio-heap treatment, soil suspension reactor) will be discussed. The microbiological, process technological and socio-economical aspects of these technologies will be addressed. Special attention will be given to novel biotechnological processes that utilise sulfur cycle conversions, e.g. sulfur and heavy metal removal from soils. Also the potential of phytoremediation will be highlighted. In addition, treatment schemes for the clean-up of polluted megasites, e.g. harbours and Manufactured Gaswork Plants (MGP), will be elaborated. The aim of Soil and Sediment Remediation is to introduce the reader in: the biogeochemical characteristics of soil and sediments- new techniques to study soil/sediment processes (molecular probes, microelectrodes, NMR) clean up technologies for soils polluted with organic (PAH, NAPL, solvents) or inorganic (heavy metals) pollutants- preventative and remediative strategies and technologies available in environmental engineering novel process applications and bioreactor designs for bioremediation the impact of soil pollution on society and its economic importance.
Author: Gabriela Dotro
Publisher: IWA Publishing
ISBN: 9781789062519
Category : Science
Languages : es
Pages : 176
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Book Description
Humedales para tratamiento es el séptimo volumen de la serie “Tratamiento biológico de aguas residuales” (en inglés “Biological Waste Water Treatment Series”), que provee una presentación de vanguardia sobre la ciencia y tecnología del tratamiento de aguas residuales. Los principales tipos de sistemas de humedales son tratados en este volumen, a saber: (i) Humedales de flujo subsuperficial horizontal, (ii) Humedales de flujo vertical; (iii) Humedales de flujo vertical tipo francés; (iv) Humedales intensificados; (v) Humedales de flujo libre; (vi) otras aplicaciones de los humedales para tratamiento. El libro presenta en forma clara y didáctica, los conceptos básicos, los principios de la tecnología, desempeños esperados, criterios de diseño, ejemplos de diseño, aspectos constructivos y guías para la operación. El libro ha sido escrito en su versión inglesa, y traducido al castellano, por un equipo internacional de expertos en el campo de los humedales para tratamiento.
Author: Bruce E. Logan
Publisher: John Wiley & Sons
ISBN: 1118230078
Category : Science
Languages : en
Pages : 493
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Book Description
A unique approach to the challenges of complex environmental systems Environmental Transport Processes, Second Edition provides much-needed guidance on mass transfer principles in environmental engineering. It focuses on working with uncontrolled conditions involving biological and physical systems, offering examples from diverse fields, including mass transport, kinetics, wastewater treatment, and unit processes. This new edition is fully revised and updated, incorporating modern approaches and practice problems at the end of chapters, making the Second Edition more concise, accessible, and easy to use. The book discusses the fundamentals of transport processes occurring in natural environments, with special emphasis on working at the biological physical interface. It considers transport and kinetics in terms of systems that involve microorganisms, along with in-depth coverage of particles, size spectra, and calculations for particles that can be considered either spheres or fractals. The book's treatment of particles as fractals is especially unique and the Second Edition includes a new section on exoelectrogenic biofilms. It also addresses dispersion in natural and engineered systems unlike any other book on the subject. Readers will learn to tackle with confidence complex environmental systems and make transport calculations in heterogeneous environments with mixtures of chemicals.
Author: Mark V. Hughes
Publisher:
ISBN:
Category : Sewage
Languages : en
Pages : 200
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Book Description
Author: Nandita Dasgupta
Publisher: Springer
ISBN: 3319987089
Category : Science
Languages : en
Pages : 298
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Book Description
This is the second volume on Environmental Nanotechnology. The first chapter discusses the synthesis of nanomaterial and mainly the green synthesis of inorganic nanomaterials. Furthermore, a comperative discussion about resistive and capacitive measurement of nano-based biosensor is reviewed and the efficient delivery of nutraceutical with the help of nano-vehicles are explained. Moreover, the book also includes reviews on such topics as nanopharmaceuticals, health benefits and the toxic impact of heavy metal nanomaterials and the impact of several nanomaterials on plant abiotic stress and have focussed on the long term impacts of nanomaterials on agroecosystems. The reader will also find presentations on molecularly imprinted polymeric nanocomposites, critical and comparative comments on Nano-biosensors and Nano-aptasensors and on applications of nanotechnology for the remediation and purification of water with a main focus on drinking water. The last chapter presents a comprehensive review on plasmonic nanoparticle based sensors whereby the authors have hypothesized the future applications in the environment which can be plausible in the near future.
Author: Mike Robinson
Publisher:
ISBN: 9783319131849
Category :
Languages : en
Pages :
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Book Description
This volume is based on the recognition that heritage is popular and popular culture is now readily transformed into heritage, whose meanings and myths reshape social life and political and economic realities, as well as re-make "tradition". The papers in this volume consider: What does popular heritage look like? To whom does it speak? Is it active in dissolving class and cultural boundaries or just in reproducing new ones? How do societies manage a heritage that is fluid, immediate and that straddles extremes of serious conflict and hedonistic frivolity? When and under what circumstances is the creation and expression of new cultural forms - popular culture - capable of being transformed into heritage?
