Adsorption Technology in Water Treatment

Fundamentals, Processes, and Modeling

Author: Eckhard Worch

Publisher: Walter de Gruyter

ISBN: 3110240238

Category: Science

Page: 344

View: 6697

This scientific monograph treats the theoretical fundamentals of adsorption technology for water treatment from a practical perspective. It presents all the basics needed for experimental adsorption studies as well as for process modeling and adsorber design. With the increasing importance of micropollutants in the water cycle, particular attention is paid to their competitive adsorption in presence of background organic matter. Clear illustrations, extensive literature references make this work indispensible for scientists and technicians involved in water treatment.

Anthropogene Spurenstoffe und Krankheitserreger im urbanen Wasserkreislauf

Bewertung, Barrieren und Risikokommunikation (ASKURIS)

Author: Baur, Nina,Böckelmann, Uta,Dünnbier, Uwe,Eckhardt, Alexander,Gnirß, Regina,Grummt, Tamara,Hummelt, Daniel,Lucke, Thomas,Meinel, Felix,Miehe, Ulf,Mutz, Daniel,Pflugmacher Lima, Stephan,Reemtsma, Thorsten,Remy, Christian,Schlittenbauer, Linda,Schulz, Wolfgang,Seiwert, Bettina,Sperlich, Alexander,Stapf, Michael,Baar, Patricia van,Wenzel, Melanie,Zietzschmann, Frederik

Publisher: Universitätsverlag der TU Berlin

ISBN: 3798328145

Category: Technology & Engineering

Page: 300

View: 4049

Im Forschungsprojekt ASKURIS wurden das Auftreten und die Entfernung organischer Spurenstoffe und resistenter Krankheitserreger in urbanen Wasserkreisläufen erforscht. Neueste analytische Methoden wurden eingesetzt, um entlang des Wasserkreislaufes bekannte Substanzen in kleinsten Konzentrationen zu quantifizieren und unbekannte Spurenstoffe zu identifizieren. Deren Entfernung durch bestehende und zusätzliche technische Barrieren (Aktivkohle und/oder Ozon) wurde an unterschiedlichen Stellen des Wasserkreislaufes untersucht. Für eine Bewertung der technischen Barrieren wurden Kosten und Auswirkungen auf die Umwelt bilanziert. Toxische Effekte auf Mensch und Umwelt wurden untersucht, um ein eventuelles Risiko abschätzen zu können. Mit empirischen, sozialwissenschaftlichen Methoden wurde die Wahrnehmung von Risiken in der Bevölkerung analysiert. Die Forschungsergebnisse aus ASKURIS wurden in das Risikomanagementsystem des größten deutschen Wasserver- und -entsorgers integriert. A partially closed water cycle may exist in urban areas, whereby treated municipal wastewater is discharged into surface waters used as a source for the drinking water supply. A number of organic micro-pollutants (OMP) can be found in the different water compartments. In the near future, climatic and demographic changes probably contribute to an increase of OMP in aquatic eco-systems. The occurrence of OMP, possible adverse effects on aquatic organisms and human health and the public perception must be carefully assessed to properly manage and communicate potential risks and to implement advanced treatment options (activated carbon or ozone) at the optimum point within the water cycle. Therefore, the interdisciplinary research project ASKURIS focused on the identification and quantification of OMP, on the toxicological assessment and removal of organic micro-pollutants and antibiotic-resistant pathogens in the Berlin water cycle, on life-cycle based economic and environmental assessments, the public perception and management of potential risks.

TestTools – Entwicklung und Validierung von schnellen Testmethoden zum Spurenstoffverhalten in technischen und natürlichen Barrieren des urbanen Wasserkreislaufs

Author: Jekel, Martin,Zietzschmann, Frederik

Publisher: Universitätsverlag der TU Berlin

ISBN: 3798330344

Category: Technology & Engineering

Page: 118

View: 4766

Das Verbundprojekt „TestTools“ hat vielfältige Untersuchungen zur Verwendbarkeit unterschiedlicher Testmethoden hinsichtlich des Spurenstoffverhaltens in natürlichen und technischen Barrieren durchgeführt. Entsprechend der gewonnenen Ergebnisse können die folgenden knapp zusammengefassten Aussagen getätigt werden. Zur Pulveraktivkohle-(PAK)-Dosierung im Labor sollten benetzte, entgaste Stammsuspensionen, die in Reinstwasser angesetzt werden, in Verbindung mit Laborpipetten verwendet werden; mit geringem Zusatzaufwand können dabei auch der PAK-Wasser- und Aschegehalt bestimmt werden. Die Kontaktherstellung mit der Testflüssigkeit sollte auf eindimensionalen Horizontalschüttlern erfolgen. Der Surrogatparameter UV254nm-Absorption eignet sich in den meisten Fällen unabhängig von der PAK-Sorte zur Prognose der Spurenstoffentfernung. Die neuartige Initialisierung des Equivalent Background Compound Models (EBCM) mittels Wasserqualitätsparametern (z. B. DOC) wurde validiert. Methylorange eignet sich als definiertes Surrogat für Adsorptionskonkurrenz durch Hintergrundorganik. UV254 eignet sich auch für kontinuierlich betriebene, großskalige Pilot- und Großanlagen zur Kontrolle und Überwachung der Spurenstoffentfernung. Eine Batchprozedur zur Vorhersage von Spurenstoffentfernungen auf PAK-Rezirkulations-Großanlagen wird vorgeschlagen. Rapid small-scale column tests (RSSCTs) werden im Vergleich mit großskaligen Daten trotz einiger Einschränkungen als geeignete Methode für schnelle und verlässliche Tests mit granulierter Aktivkohle (GAK) bestätigt. Größere RSSCTs bringen weniger Einschränkungen aber einen deutlich höheren Aufwand mit sich. GAK-Batchtests sind nur bedingt geeignet. Integrale Durchbruchskurven unterliegen deutlich weniger Schwankungen als direkte („aktuelle“) Durchbruchskurven. Abgleiche zwischen den Durchbrüchen in verschiedenen Wässern können mittels Auftragungen über spezifische Durchsätze von bestimmten Wasserqualitätsparametern (aus der größenausschluss-chromatographischen Trennung des DOC) erreicht werden. Surrogatparameter wie UV254 eignen sich nur bedingt zur Vorhersage, insbesondere bei stark adsorbierenden Spurenstoffen. Die Nützlichkeit künstlicher Surrogatparameter muss noch geklärt werden. Ozon-Laborversuche im Batch bzw. Semi-Batch-Methoden liefern vergleichbare Ergebnisse hinsichtlich der Spurenstoffelimination, haben jedoch unterschiedliche Vor- und Nachteile bei der praktischen Umsetzung. Der Feststoffeinfluss auf die ozoninduzierte Spurenstoffelimination ist gering und erst ab ca. 20 mg/L Trockensubstanz relevant. Temperatur und pH-Wert haben ebenfalls wenig bis keinen Einfluss; allerdings beeinflussen sie die ermittelten Ozonzehrungsverläufe. Über die UV254-Absorption (SAK254) können gute Vorhersagen der Spurenstoffelimination getätigt werden. Die Bromatbildung fiel in Batch- und Semi-Batch-Versuchen teils unterschiedlich aus; die Bildung von Bromat oder NDMA wird gegenüber Pilot- oder großtechnischen Anlagen tendenziell überschätzt. Von 18 kommunalen Kläranlagen wurden die Eliminationen verschiedener Spurenstoffe bzw. des ΔSAK254 bezüglich des spez. Ozoneintrags ermittelt, was für Referenzzwecke nutzbar ist. Interne OH-Radikaltracer waren in allen 18 untersuchten Kläranlagen anzutreffen, was zur Ermittlung der OH-Radikalexposition als auch zur Qualitätssicherung genutzt werden kann. Die Modellierung basierend auf Ozon- und OH-Radikalexposition führte zu teils deutlichen Überschätzungen der Spurenstoffelimination. Die Ergebnisse einer Umfrage zeigen eine überwiegend sehr gute Informationslage bei den Stakeholdern. Zur biologischen Nachbehandlung des ozonierten Klarlaufs wird von den befragten Personen der Einsatz von Filtersystemen, insbesondere solchen mit granulierter Aktivkohle, empfohlen. Aufgrund der sehr komplexen Zusammenhänge in naturnahen biologischen Barrieren, wie beispielsweise der Uferfiltration oder der künstlichen Grundwasseranreicherung, sind schnelle Testmethoden nur bedingt aussagekräftig. Erkenntnisse der letzten Jahre deuten darauf hin, dass kleine Unterschiede in der Verfügbarkeit von Sauerstoff oder biologisch verfügbarem organischen Kohlenstoff bereits erhebliche Unterschiede in der Elimination bestimmter organischer Spurenstoffe haben. Neben den chemischen Parametern hat die Zusammensetzung der Mikrobiozönose einen entscheidenden Einfluss auf die Abbauleistung. Insgesamt eignen sich einfach durchzuführende Laborschnelltests daher nicht, die hohe Komplexität naturnaher Untergrundprozesse darzustellen. Lediglich eine gute Abbaubarkeit unter oxischen Verhältnissen lässt sich vergleichsweise gut anhand von Kleinsäulentests im Labormaßstab abbilden. The joint project “TestTools” studied the applicability of various test methods for the behaviour of organic micro-pollutants in different natural and technological barriers. The following short summary gives an overview on the most relevant results. Dosage of powdered activated carbon (PAC) in laboratory experiments should be conducted by using stock suspensions in pure water which have been subject to sufficient wetting and degassing, in combination with laboratory pipettes; during stock suspension preparation, the PAC water and ash contents can be determined with relatively little additional effort. Upon dosage, mixture should be accomplished with one-dimensional horizontal lab shakers. The surrogate parameter of UV254nm absorption allows for predicting organic micro-pollutant removals independent of the PAC product in most cases. The novel initialization of the equivalent background compound model (EBCM) via water quality parameters (e.g. DOC) was validated. Methyl orange is suitable as a defined surrogate for the simulation of background organics adsorption competition. UV254 allows for monitoring and controlling continuously operated pilot/large-scale PAC plants. A lab batch procedure is recommended for projections of organic micro-pollutant removals on full-scale PAC recirculation plants. Rapid small-scale column tests (RSSCTs) could be confirmed as a suitable method for fast and reliable testing of granular activated carbon (GAC) by comparisons with large-scale data, despite some restrictions. Large RSSCTs reduce these restrictions but induce substantially increased efforts. GAC batch tests are only partly suitable. Integral breakthrough curves are subject to reduced fluctuations compared to direct (“current”) breakthrough curves. Depictions over specific throughputs of water quality parameters (from size exclusion chromatography of the DOC) allow for alignments of breakthrough curves obtained in different types of waters. Surrogate parameters such as UV254 are only little useful for breakthrough predictions of organic micro-pollutants (usefulness decreasing with increasing adsorbability). The usefulness of artificial surrogates should be further clarified. Ozonation lab tests in batch and semi-batch setups produce comparable results regarding organic micro-pollutant eliminations, but they have different (dis)advantages with respect to practical implementation. The impacts of suspended solids on ozoneinduced organic micro-pollutant eliminations are small and only relevant at concentrations greater 20 mg/L dry mat-ter. The influences of temperature and pH are also small or non-existent; however, they affect the established ozone consumption profiles. UV254 allows for good predictions of organic micro-pollutant eliminations. Bromate formation was partly different in batch and semi-batch setups; bromate and NDMA formations are generally over-estimated compared to pilot or full-scale plants. The organic micro-pollutant and UV254 eliminations at 18 domestic wastewater treatment plants were determined; the established data can be used for reference applications. Internal OH radical tracers were found in all 18 effluents, which can be used for assessing the OH radical exposure as well as for quality control purposes. Ozone exposure-/OH radical exposure-based modelling led to partly noticeable overestimations of organic micro-pollutant eliminations. The results of a survey demonstrated a predominantly very high knowledgeability on ozonation in relevant stakeholders. As post-treatment steps, the participants recommend filter systems, in particular granular activated carbon filters. For natural/biological barriers like bank filtration or managed aquifer recharge, rapid laboratory test methods are only partly informative, because of the occurring complex processes in such systems. Recent findings highlight that even minor variations in oxygen availability or biologically available organic carbon can cause substantial differences of organic micro-pollutant eliminations. In addition to the chemical parameters, the composition of the micro-biocenosis has critical impacts on transformation rates. Overall, simple and rapid laboratory tests are not suitable for simulating highly complex underground processes. Only the transformation of substances which are well-degradable under oxic conditions can be reproduced relatively satisfactorily in small-scale lab columns.

Nanocellulose and Sustainability

Production, Properties, Applications, and Case Studies

Author: Koon-Yang Lee

Publisher: CRC Press

ISBN: 1351262912

Category: Technology & Engineering

Page: 300

View: 5416

Nanometre scale cellulose fibres, or nanocellulose, are emerging materials for various advanced applications. Nanocellulose and Sustainability: Production, Properties, Applications, and Case Studies provides a comprehensive overview of nanocellulose production, nanocellulose properties and nanocellulose in selected applications. This book serves as an entry level reference text for undergraduates, graduate students, researchers and professional engineers working in the area of nanocellulose and sustainability.

Polymer-based Nanocomposites for Energy and Environmental Applications

Author: Mohammad Jawaid,Mohammad Mansoob Khan

Publisher: Woodhead Publishing

ISBN: 0081019114

Category: Technology & Engineering

Page: 700

View: 4269

Polymer-Based Nanocomposites for Energy and Environmental Applications provides a comprehensive and updated review of major innovations in the field of polymer-based nanocomposites for energy and environmental applications. It covers properties and applications, including the synthesis of polymer based nanocomposites from different sources and tactics on the efficacy and major challenges associated with successful scale-up fabrication. The chapters provide cutting-edge, up-to-date research findings on the use of polymer based nanocomposites in energy and environmental applications, while also detailing how to achieve material’s characteristics and significant enhancements in physical, chemical, mechanical and thermal properties. It is an essential reference for future research in polymer based nanocomposites as topics such as sustainable, recyclable and eco-friendly methods for highly innovative and applied materials are current topics of importance. Covers a wide range of research on polymer based nanocomposites Provides updates on the most relevant polymer based nanocomposites and their prodigious potential in the fields of energy and the environment Demonstrates systematic approaches and investigations from the design, synthesis, characterization and applications of polymer based nanocomposites Presents a useful reference and technical guide for university academics and postgraduate students (Masters and Ph.D.)

Activated Carbon for Water and Wastewater Treatment

Integration of Adsorption and Biological Treatment

Author: Ferhan Cecen,Özgür Aktas

Publisher: John Wiley & Sons

ISBN: 3527639454

Category: Science

Page: 406

View: 3123

This monograph provides comprehensive coverage of technologies which integrate adsorption and biological processes in water and wastewater treatment. The authors provide both an introduction to the topic as well as a detailed discussion of theoretical and practical considerations. After a review of the basics involved in the chemistry, biology and technology of integrated adsorption and biological removal, they discuss the setup of pilot- and full-scale treatment facilities, covering powdered as well as granular activated carbon. They elucidate the factors that influence the successful operation of integrated systems. Their discussion on integrated systems expands from the effects of environmental to the removal of various pollutants, to regeneration of activated carbon, and to the analysis of such systems in mathematical terms. The authors conclude with a look at future needs for research and develoment. A truly valuable resource for environmental engineers, environmental and water chemists, as well as professionals working in water and wastewater treatment.

Fundamentals of Adsorption

Author: M Suzuki

Publisher: Elsevier

ISBN: 9780080887722

Category: Technology & Engineering

Page: 798

View: 341

Fundamentals of Adsorption contains 2 plenary lectures and 96 selected papers from the IVth International Conference, Kyoto, May, 1992. The topics cover a wide range of studies from fundamentals to applications: characterization of porous adsorbents, molecular simulation, adsorption isotherms, diffusion in adsorbents, breakthrough detection, chromatography, pressure swing operation, etc. Model studies on adsorption, surface characterization, microporosimetry, molecular simulations of equilibrium and diffusion, computer simulation of adsorption beds, and many theoretical studies are also included. Special attention is given to: bulk gas separation and purification, solvent recovery, bioproduct separation, environmental pollution control, methane storage, adsorption cooling and resources recovery.

Interface Science in Drinking Water Treatment

Theory and Applications

Author: Gayle Newcombe,David Dixon

Publisher: Academic Press

ISBN: 9780080530512

Category: Science

Page: 376

View: 656

It is difficult to imagine anything more important to the human population than safe drinking water. Lack of clean drinking water is still the major cause of illness and death in young children in developing countries. In more fortunate communities, where water treatment is practiced, the primary aim of water authorities is to provide water that is free from pathogens and toxins. Most countries now have water quality regulations, or guidelines, which are driving water authorities to produce purer water, with the minimum of contamination from natural or man-made origin. At the same time, consumers are demanding that chemicals added during the treatment of drinking water be kept to a minimum. As a consequence, conventional clarification methods are being challenged to comply with the new regulations and restrictions and our understanding of the mechanisms involved is being tested as never before. Interface Science in Drinking Water Treatment contains a rigorous review of water treatment practices from a fundamental viewpoint. The book includes material from leading experts in the field of water treatment, reviewing their specific fields of expertise against a background of colloid and surface chemistry, and examines each step of the journey from source to consumer tap. It therefore permits the reader to develop a deep understanding of the complex processes taking place and of the necessary treatments which are vital for the provision of safe and palatable drinking water. The book is aimed at researchers, educators and practitioners in science and engineering, particularly those involved in water treatment and colloidal chemistry. · Covers all existing water treatment processes, approached from a fundamental surface and colloid science viewpoint · Unique collection of R&D authors, all experts in water treatment processes · Comprehensive review of water treatment with a complete list of references

Green Adsorbents for Pollutant Removal

Fundamentals and Design

Author: Grégorio Crini,Eric Lichtfouse

Publisher: Springer

ISBN: 3319921118

Category: Science

Page: 390

View: 1914

This is the first volume on adsorption using green adsorbents and is written by international contributors who are the leading experts in the adsorption field. The first volume provides an overview of fundamentals and design of adsorption processes. For people who are new to the field, the book starts by two overview chapters presenting the principles and properties of wastewater treatment and adsorption processes. The book also provides a comprehensive source of knowledge on acid-base properties of biosorbents. It discusses fractal-like kinetic models for fluid-solid adsorption, reports on the chemical characterization of oxidized activated carbons for metal removal, and the use of magnetic biosorbents in water treatment. Furthermore, the thermodynamic properties of metals adsorption by green adsorbents, and biosorption of polycyclic aromatic hydrocarbons and organic pollutants are reviewed, and finally the recent trends and impact of nanomaterials as green adsorbent and potential catalysts for environmental applications are summarized. The audience for this book includes students, environmentalists, engineers, water scientists, civil and industrial personnel who wish to specialize in adsorption technology. Academically, this book will be of use to students in chemical and environmental engineering who wish to learn about adsorption and its fundamentals. It has also been compiled for practicing engineers who wish to know about recent developments on adsorbent materials in order to promote further research toward improving and developing newer adsorbents and processes for the efficient removal of pollutants from industrial effluents. It is hoped that the book will serve as a readable and useful presentation not only for undergraduate and postgraduate students but also for the water scientists and engineers and as a convenient reference handbook in the form of numerous recent examples and appended information.

Water Quality Engineering

Physical / Chemical Treatment Processes

Author: Mark M. Benjamin,Desmond F. Lawler

Publisher: John Wiley & Sons

ISBN: 1118632273

Category: Technology & Engineering

Page: 904

View: 7827

Explains the fundamental theory and mathematics of water and wastewater treatment processes By carefully explaining both the underlying theory and the underlying mathematics, this text enables readers to fully grasp the fundamentals of physical and chemical treatment processes for water and wastewater. Throughout the book, the authors use detailed examples to illustrate real-world challenges and their solutions, including step-by-step mathematical calculations. Each chapter ends with a set of problems that enable readers to put their knowledge into practice by developing and analyzing complex processes for the removal of soluble and particulate materials in order to ensure the safety of our water supplies. Designed to give readers a deep understanding of how water treatment processes actually work, Water Quality Engineering explores: Application of mass balances in continuous flow systems, enabling readers to understand and predict changes in water quality Processes for removing soluble contaminants from water, including treatment of municipal and industrial wastes Processes for removing particulate materials from water Membrane processes to remove both soluble and particulate materials Following the discussion of mass balances in continuous flow systems in the first part of the book, the authors explain and analyze water treatment processes in subsequent chapters by setting forth the relevant mass balance for the process, reactor geometry, and flow pattern under consideration. With its many examples and problem sets, Water Quality Engineering is recommended as a textbook for graduate courses in physical and chemical treatment processes for water and wastewater. By drawing together the most recent research findings and industry practices, this text is also recommended for professional environmental engineers in search of a contemporary perspective on water and wastewater treatment processes.

Combined and Hybrid Adsorbents

Fundamentals and Applications

Author: José M. Loureiro,Mykola T. Kartel

Publisher: Springer Science & Business Media

ISBN: 1402051700

Category: Nature

Page: 370

View: 2863

Proceedings of the NATO Advanced Research Workshop on Combined and Hybrid Adsorbents: Fundamentals and Applications, Kiev, Ukraine, 15-17 September 2005

Fundamentals of Water Treatment Unit Processes

Physical, Chemical, and Biological

Author: David Hendricks

Publisher: CRC Press

ISBN: 1439895090

Category: Technology & Engineering

Page: 927

View: 5787

Carefully designed to balance coverage of theoretical and practical principles, Fundamentals of Water Treatment Unit Processes delineates the principles that support practice, using the unit processes approach as the organizing concept. The author covers principles common to any kind of water treatment, for example, drinking water, municipal wastewater, industrial water treatment, industrial waste water treatment, and hazardous wastes. Since technologies change but principles remain constant, the book identifies strands of theory rather than discusses the latest technologies, giving students a clear understanding of basic principles they can take forward in their studies. Reviewing the historical development of the field and highlighting key concepts for each unit process, each chapter follows a general format that consists of process description, history, theory, practice, problems, references, and a glossary. This organizational style facilitates finding sections of immediate interest without having to page through an excessive amount of material. Pedagogical Features End-of-chapter glossaries provide a ready reference and add terms pertinent to topic but beyond the scope of the chapter Sidebars sprinkled throughout the chapters present the lore and history of a topic, enlarging students’ perspective Example problems emphasize tradeoffs and scenarios rather than single answers and involve spreadsheets Reference material includes several appendices and a quick-reference spreadsheet Solutions manual includes spreadsheets for problems Supporting material is available for download Understanding how the field arrived at its present state of the art places the technology in a more logical context and gives students a strong foundation in basic principles. This book does more than build technical proficiency, it adds insight and understanding to the broader aspects of water treatment unit processes.

Lebenslinien

Eine Selbstbiographie

Author: Wilhelm Ostwald

Publisher: BoD – Books on Demand

ISBN: 384302233X

Category: Fiction

Page: 808

View: 4733

Wilhelm Ostwald: Lebenslinien. Eine Selbstbiographie Erstdruck: Berlin (Klasing) 1926/1927. Vollständige Neuausgabe. Herausgegeben von Karl-Maria Guth. Berlin 2013. Textgrundlage ist die Ausgabe: Ostwald, Wilhelm: Lebenslinien. Eine Selbstbiographie, 3 Teile, Berlin: Klasing, 1926/1927. Die Paginierung obiger Ausgabe wird in dieser Neuausgabe als Marginalie zeilengenau mitgeführt. Umschlaggestaltung von Thomas Schultz-Overhage unter Verwendung des Bildes: Wilhelm Ostwald (1903). Gesetzt aus Minion Pro, 11 pt. Über den Autor: Neben dessen Gründer Ernst Haeckel war der Freimaurer und Chemie-Nobelpreisträger Wilhelm Ostwald einer der führenden Köpfe des Deutschen Monistenbundes, der eine wissenschaftlich begründbare Weltanschauung nach dem Prinzip der Einheit von Natur und Geist vertrat und dabei christlicher Dogmatik widersprach. Er schlug unter dem Namen »Weltdeutsch« ein vereinfachtes Deutsch als internationale Plansprache vor und setzte sich für ein Weltgeld ein. Nach Differenzen mit der Universität Leipzig legte er seinen Lehrstuhl nieder und lebte als Privatforscher bis zu seinem Lebensende 1932 auf seinem Landsitz in Großbothen.

Adsorption Calculations and Modelling

Author: Howard Brenner

Publisher: Elsevier

ISBN: 148329224X

Category: Technology & Engineering

Page: 288

View: 1233

'Adsorption Calculations and Modelling' provides readers with practical, useful information about how to make adsorption calculations and formulate models describing adsorption processes. Unlike most books on this subject, this book treats both gas phase adsorption and liquid phase adsorption with equal emphasis, and supplies a rigorous treatment of multi-component adsorption. It also covers adsorption applications in environmental applications including the use of impregnated adsorbents for protection against toxic gases and carbon adsorption in water and wastewater treatment. Explores the most up-to-date information on multicomponent adsorption Details adsorption applications in environmental application Explains the fundamentals of adsorption calculation in a simple, straightforward manner.

Adsorbents

Fundamentals and Applications

Author: Ralph T. Yang

Publisher: John Wiley & Sons

ISBN: 0471462411

Category: Technology & Engineering

Page: 424

View: 8595

Adsorption promises to play an integral role in several futureenergy and environmental technologies, including hydrogen storage,CO removal for fuel cell technology, desulfurization oftransportation fuels, and technologies for meeting higher standardson air and water pollutants. Ralph Yang's Adsorbents provides asingle and comprehensive source of knowledge for all commercial andnew sorbent materials, presenting the fundamental principles fortheir syntheses, their adsorption properties, and their present andpotential applications for separation and purification. Chaptertopics in this authoritative, forward-looking volume include: - Formulas for calculating the basic forces or potentials foradsorption - Calculation of pore-size distribution from a single adsorptionisotherm - Rules for sorbent selection - Fundamental principles for syntheses/preparation, adsorptionproperties, and applications of commercially availablesorbents - Mesoporous molecular sieves and zeolites -¸-complexation sorbents and their applications - Carbon nanotubes, pillared clays, and polymeric resins Yang covers the explosion in the development of new nanoporousmaterials thoroughly, as the adsorption properties of some of thesematerials have remained largely unexplored. The whole of this bookbenefits from the new adsorbent designs made possible by theincrease in desktop computing and molecular simulation, makingAdsorbents useful to both practicing laboratories and graduateprograms. Ralph Yang's comprehensive study contributessignificantly to the resolution of separation and purificationproblems by adsorption technologies.

Water Treatment Unit Processes

Physical and Chemical

Author: David W. Hendricks

Publisher: CRC Press

ISBN: 9780824706951

Category: Technology & Engineering

Page: 1266

View: 4983

The unit process approach, common in the field of chemical engineering, was introduced about 1962 to the field of environmental engineering. An understanding of unit processes is the foundation for continued learning and for designing treatment systems. The time is ripe for a new textbook that delineates the role of unit process principles in environmental engineering. Suitable for a two-semester course, Water Treatment Unit Processes: Physical and Chemical provides the grounding in the underlying principles of each unit process that students need in order to link theory to practice. Bridging the gap between scientific principles and engineering practice, the book covers approaches that are common to all unit processes as well as principles that characterize each unit process. Integrating theory into algorithms for practice, Professor Hendricks emphasizes the fundamentals, using simple explanations and avoiding models that are too complex mathematically, allowing students to assimilate principles without getting sidelined by excess calculations. Applications of unit processes principles are illustrated by example problems in each chapter. Student problems are provided at the end of each chapter; the solutions manual can be downloaded from the CRC Press Web site. Excel spreadsheets are integrated into the text as tables designated by a "CD" prefix. Certain spreadsheets illustrate the idea of "scenarios" that emphasize the idea that design solutions depend upon assumptions and the interactions between design variables. The spreadsheets can be downloaded from the CRC web site. The book has been designed so that each unit process topic is self-contained, with sidebars and examples throughout the text. Each chapter has subheadings, so that students can scan the pages and identify important topics with little effort. Problems, references, and a glossary are found at the end of each chapter. Most chapters contain downloadable Excel spreadsheets integrated into the text and appendices with additional information. Appendices at the end of the book provide useful reference material on various topics that support the text. This design allows students at different levels to easily navigate through the book and professors to assign pertinent sections in the order they prefer. The book gives your students an understanding of the broader aspects of one of the core areas of the environmental engineering curriculum and knowledge important for the design of treatment systems.

Fundamentals of Adsorption

Proceedings of the Engineering Foundation Conference Held at Schloss Elmau, Bavaria, West Germany, May 6-11, 1983

Author: Engineering Foundation (U.S.). Conference

Publisher: Amer Inst of Chemical Engineers

ISBN: N.A

Category: Science

Page: 788

View: 2935