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Full Description
Focuses on the application of membrane technologies in removing toxic metals\metalloids from water. Particular attention is devoted to the removal of arsenic, uranium, and fluoride. These compounds are all existing in the earth's crust at levels between two and five thousands micrograms per kg (parts per million) on average and these compounds can be considered highly toxic to humans, who are exposed to them primarily from air, food and water. In order to comply with the new maximum contaminant level, numerous studies have been undertaken to improve established treatments or to develop novel treatment technologies for removing toxic metals from contaminated surface and groundwater. Among the technologies available, applicable for water treatment, membrane technology has been identified as a promising technology to remove such toxic metals from water. The book describes both pressure driven (traditional processes, such as Nanofiltration, Reverse Osmosis, Ultrafiltration,etc) and more advanced membrane processes (such as forward osmosis, membrane distillation, and membrane bio-reactors) employed in the application of interest. Key aspect of this book is to provide information on both the basics of membrane technologies and on the results depending on the type of technology employed.
Contents
1: Introduction; 2: Bioadsorption materials and membranes for the treatment of toxic metal ions from water; 3: Bioadsorption materials and membranes for the treatment of toxic metal ions from water; 4: Arsenic removal by low pressure-driven membrane; 5: Nanofiltration (NF) novel membrane and process for removal of arsenic; 6: Removal of Fluoride and Uranium by nanofiltration; 7: The use of Reverse Osmosis (RO) for removal of arsenic, fluorine and uranium from drinking water; 8: Electro-membrane process for the treatment of toxic metal ions from water; 9: Supported liquid membrane technology in the removal and recovery of toxic ions from water; 10: Polymer Inclusion Membranes for the separation of uranium and arsenic from dilute aqueous solutions; 11: Liquid membrane separations of uranium; 12 Membrane Distillation (MD) for the treatment of waters contaminated by arsenic, fluoride and uranium; 13: Fate and removal of trace metals from urban wastewater by membrane bioreactors: pilot and full-scale experiences; 14: Contaminants removal by Forward Osmosis (FO) membranes
