Removal of Toxic Metals from Dilute Synthetic Solutions by Ion- and Precipitate- Flotation PDF Download
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Author: Kandipati Sreenivasarao
Publisher:
ISBN:
Category :
Languages : en
Pages : 450
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Book Description
Author: Kandipati Sreenivasarao
Publisher:
ISBN:
Category :
Languages : en
Pages : 450
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Book Description
Author: Zhendong Liu
Publisher:
ISBN:
Category :
Languages : en
Pages : 406
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Book Description
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: Myer Kutz
Publisher: John Wiley & Sons
ISBN: 0471739049
Category : Technology & Engineering
Languages : en
Pages : 480
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Book Description
The third volume of the Wiley series, Environmentally Conscious Material and Chemically Processing focuses on environmentally preferable approaches to designing and developing material and chemical processing. The book reflects the hierarchy of design, from tools for evaluating environmental hazards of industrial materials and chemicals through to the economics of environmental improvement projects. Major topics covered include: Chemical Manufacturing, Materials substitutions, Engineering processes, products, and systems to reduce environmental impacts, approaches for evaluating emissions and hazards of chemicals and processes, Environmental regulations, Properties and fates of environmental contaminants, and others.
Author: Raymond Thompson
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 262
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Book Description
Author: Sean Ren
Publisher:
ISBN:
Category : Flotation
Languages : en
Pages : 462
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Book Description
Author: Akil Ahmad
Publisher: Elsevier
ISBN: 0128228814
Category : Science
Languages : en
Pages : 582
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Book Description
Emerging Techniques for Treatment of Toxic Metals from Wastewater explores the different physical and chemical methods that can be used to remove toxins from wastewater, including adsorption, solvent extraction, ion exchange, precipitation, filtration and photocatalytic degradation. Bringing together contributions from leading experts in the field, the book covers each of the different techniques in detail, combining emergent research outcomes with fundamental theoretical concepts to provide a clear appraisal of the different techniques available, along with their applications. It is an essential recourse for researchers, industrialists and students concerned with the remediation of toxic metals from water and wastewater. Covers the various techniques for metal removal and their applications in a single source Addresses emerging technologies; chemical, physical, and biological including nanotechnology Brings together novel techniques and their applications for enhancing large scale industrial production signposting opportunities for significant enhancements
Author: Curtis W. McDonald
Publisher:
ISBN:
Category : Extraction (Chemistry)
Languages : en
Pages : 24
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Book Description
Author: Lin Tang
Publisher: Elsevier
ISBN: 0128141557
Category : Science
Languages : en
Pages : 322
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Book Description
Nanohybrid and Nanoporous Materials for Aqueous Environmental Pollution Control gives a comprehensive treatment of fabrication methods and their application in environmental remediation, including adsorption, catalysis and signal transfer in pollutant detection. The design, fabrication and application of nanohybrid and nanoporous materials for environmental pollution control are described in detail, along with discussions on their synthesis, characterization, and applications in different aspects of pollutant treatment. Chapters introduce the design and synthesis of magnetic nanohybrid materials, advanced oxide process-photocatalytic degradation of environmental pollutants based on nanomaterials, and nanohybrids of iron based materials for reduction and oxidation of aqueous recalcitrant pollutant. Finally, challenges and suggestions in the application of nanomaterials for environmental pollution control are discussed, as is an analysis of the future perspective of nanomaterials for environmental application. Presents the most up-to-date developments in this rapidly progressing field Provides suggestions to address challenges and solve current problems related to the application of nanoporous materials Discusses future trends and perspectives in the area of nanohybrid and nanoporous materials
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.
