Removal of Metal Ions from Dilute Aqueous Solutions by Ion Flotation PDF Download
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Author: Zhendong Liu
Publisher:
ISBN:
Category :
Languages : en
Pages : 406
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Book Description
Author: Zhendong Liu
Publisher:
ISBN:
Category :
Languages : en
Pages : 406
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Book Description
Author: Saskia Duyvesteyn
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
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Author: Demet Erdoğan
Publisher:
ISBN:
Category : Sewage
Languages : en
Pages : 164
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Book Description
In this study, ion flotation experiments were performed to investigate the removal of heavy metals (copper, zinc, silver and chromium) from wastewaters.Various parameters such as pH, surfactant and frother concentrations and airflow rate values were tested to determine the optimum flotation conditions. Sodium dodecyl sulfate and Hexadecyltrimethyl ammonium bromide were used as collectors. Ethanol /MIBC were used as frothers.For 10 mg/L initial concentrations of copper, zinc, silver and chromium (III), the highest recoveries obtained were 90%, 71%, 73% and 97%, respectively. When the initial concentration of metals increased the recovery decreased. This proves the attachment of metal ions on surfactant molecules.The presence of Na+, Mg2+, Ca2+ ions in solution reduced the recoveries in case of all the metals since the presence of excess Na, Mg, Ca ions compete with metals and the metal ions can not find enough surfactant molecules to attach to.Selective flotation experiments were conducted in the presence of metal ion mixture solutions. It was possible to separate copper and chromium from zinc and silver, and also possible to separate chromium from zinc and copper and zinc from copper and chromium under suitable conditions.The classical first order equation fitted the results on flotation. Zinc and chromium floated not only more in an amount but also floated faster than copper.Surface tension measurements were conducted to investigate both the collector surfactants and the frothers at air/water interface since air bubbles carry the surfactant-metal ion complexes to the froth and separate from solution.
Author: Kandipati Sreenivasarao
Publisher:
ISBN:
Category :
Languages : en
Pages : 450
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Author: Mustafa Ersoz
Publisher: IWA Publishing
ISBN: 1843393840
Category : Science
Languages : en
Pages : 120
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Book Description
Part of Metals and Related Substances in Drinking Water Set - buy all five books together to save over 30%! The EU Drinking Water Directive sets a range of standards for metals and related substances in drinking water, many of which are concerned with health protection. A number of these standards are very stringent and require compliance to be assessed at the point of use. Because of the difficulties associated with monitoring, historic practices in many countries have concentrated on the quality of water within the distribution network. As a result, the magnitude of problems with some metals and related substances in drinking water is not fully appreciated in all European countries, and the extent and nature of corrective actions differ widely. This Best Practice Guide on Metals Removal From Drinking Water By Treatment describes drinking water standards and regulations, and explains the impact of a range of water treatment processes on metal levels in drinking water. Its objectives are to provide a basis for assessing the extent of problems and to identify appropriate water treatment options. The Guide provides a reasoned guide to selection of key water treatment processes. Each chapter focuses on a specific water treatment process and has been written by experts in that particular process. Best Practice Guide on Metals Removal From Drinking Water By Treatment provides practice-based knowledge for water engineers and scientists in large and small water utilities, regulatory agencies, health agencies and local municipalities (from cities through to small rural communities). It also supports university level teaching in degree schemes that relate to water management. This Guide is one of a series produced by the International Water Association’s Specialist Group on Metals and Related Substances in Drinking Water. The series is an up-to-date compilation of a range of scientific, engineering, regulatory and operational issues concerned with the control and removal of metals from drinking water.
Author: Raymond Thompson
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 266
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Book Description
Author: Maulin P. Shah
Publisher: Elsevier
ISBN: 0128231084
Category : Technology & Engineering
Languages : en
Pages : 748
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Book Description
New Trends in Removal of Heavy Metals from Industrial Wastewater covers the applicable technologies relating to the removal of heavy metals from wastewater and new and emerging trends in the field, both at the laboratory and industrial scale. Sections explore new environmentally friendly technologies, the principles of sustainable development, the main factors contributing to heavy metal removal from wastewater, methods and procedures, materials (especially low-cost materials originated from industrial and agricultural waste), management of wastewater containing heavy metals and wastewater valorization, recycling, environmental impact, and wastewater policies for post heavy metal removal. This book is an advanced and updated vision of existing heavy metal removal technologies with their limitations and challenges and their potential application to remove heavy metals/environmental pollutants through advancements in bioremediation. Finally, sections also cover new trends and advances in environmental bioremediation with recent developments in this field by an application of chemical/biochemical and environmental biotechnology. Outlines the fate and occurrence of heavy metals in Wastewater Treatment Plants (WWTPs) and potential approaches for their removal Describes the techniques currently available for removing heavy metals from wastewater Discusses the emerging technologies in heavy metal removal Covers biological treatments to remove heavy metals Includes the valorization of heavy metal containing wastewater
Author: Robert Lemlich
Publisher: Elsevier
ISBN: 0323154816
Category : Technology & Engineering
Languages : en
Pages : 349
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Book Description
Adsorptive Bubble Separation Techniques focuses on the mechanisms of the various adsorptive bubble separation methods. This book examines the various adsorptive bubble separation techniques, including ion flotation, foam fractionation, precipitate flotation, mineral flotation, bubble fractionation, and solvent sublation. Organized into 20 chapters, this book starts with an overview of the certain important properties of foam. This text then examines the results of several separations, as well as the results of additional studies into the mechanisms of the different techniques. Other chapters explain the studies of foam separation in the case of synthetic solutions, which provide a good knowledge of the extraction mechanisms of the radioactive cations, cesium, cerium, and strontium. This book discusses as well the experimental and theoretical work on foam separation done in Israel. The final chapter deals with the separation of surfactants and metallic ions at various places around the world. This book is a valuable resource for materials scientists, engineers, and chemists.
Author: Richard M. Pashley
Publisher: John Wiley & Sons
ISBN: 0470868848
Category : Science
Languages : en
Pages : 203
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Book Description
Applied Colloid and Surface Chemistry is a broadintroduction to this interdisciplinary field. Taking a genuinelyapplied approach, with applications drawn from a wide range ofindustries, this book will meet the demands of the student andprofessional currently working in the field. The text includes keynote sections written by practicingindustrial research scientists, bringing to the reader a wealth ofreal industrial examples. These examples range from water treatmentthrough to soil management as well as examples taken from thecoatings and photographic industries. To aid accessibility, some ofthe more demanding mathematical derivations are separated from themain text, enabling them to be avoided as required. With carefully structured chapters, starting with learningobjectives, and containing tutorial questions with answers andexplanatory notes, this text is invaluable for undergraduatestaking a first course on colloid and surface chemistry. This bookwill also be suitable to postgraduates and professionals, who needan up-to-date account of the subject.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A method of removing heavy metals from aqueous solution, a composition of matter used in effecting said removal, and apparatus used in effecting said removal. One or more of the polypeptides, poly (.gamma.-glutamylcysteinyl)glycines, is immobilized on an inert material in particulate form. Upon contact with an aqueous solution containing heavy metals, the polypeptides sequester the metals, removing them from the solution. There is selectivity of poly (.gamma.-glutamylcysteinyl)glycines having a particular number of monomer repeat unit for particular metals. The polypeptides are easily regenerated by contact with a small amount of an organic acid, so that they can be used again to remove heayv metals from solution. This also results in the removal of the metals from the column in a concentrated form.
