Ion Exchange: Science and Technology

Ion exchangeis a field in which cooperation betweenchemists and chemical engineersis highlydesirable. This NATO AdvancedStudy Institute had as aprimary objectiveto bring together chemists and chemical engineers. The Institute was dedicatedto the memory of Prof. Ted Vermeulen who was supposed to be our scientificadvisor. The lectures presentedat the Institute are collected in this volume together with papers presentedby F.Evangel ista,A.Bungeand G.Grevillot. The materialis arrangedin five sections. The Introduction con tains a review of the contributions of Vermeulen'swork to the field and an overviewof ion exchange. Section2 deals with the chemistry of ion exchangeresins.Section3 covers the chemical engineeringas pects of ion exchangeprocesses (thermodynamics ,kinetics ,modelling and modes of operation).Section 4 starts with a broad review of in dustrial applicationsof ion exchangefollowed by papers dealing with hydrometallurgy,react ion processes involvingion exchangers and zeolites.Finally section5 deals with Alternative Processes to ion exchange.Itincludesion exchangemembranes,solvent extraction, liquidmembranes andcementation. I am very grateful to my coworkerJ .Loureirofor the collabora tion as Institute Secretary. Cooperationof M.Hudson at severalsta ges of the organization of the Institute is gratefully acknowledged. The financialsupport of the NATO AdvancedStudy Institute Pro gramme made this course possible.The participants made it allworth while. October1,1985 A.E.Rodrigues VII NATO Advanced Stud y Institute "Ion Exchange : Science and Technology" Director:A.E.Rodrigues Advisory Committee: M.Hudson (co-director),M.Streatand D.Tondeur Lecturers: S.Carra,Politecnico Milano,Italy C.Costa,Universidade do Porto,Portugal P .Grammont,Duolite International,France F.Helfferich,Penn.State University,USA M.Hudson,University of Reading,UK .

Proceedings of the NATO Advanced Study Institute on Ion Exchange: Science and Technology, Troía, Portugal, July 14-26, 1985

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International,France F.Helfferich,Penn.State University,USA M.Hudson,University of Reading,UK .

Contenu
I. Introduction.- Theodore Vermeulen's contributions to process design for sorption operations.- Ion Exchange: past, present, and future.- II. Chemistry of Ion Exchange Resins.- Coordination chemistry of selective ion exchange resins.- Modern research in ion exchange.- III. Chemical Engineering Aspects of Ion Exchange Processes.- Thermodynamics of ion exchange: prediction of multicomponent equilibria from binary data.- Design methods for ion-exchange processes based on the equilibrium theory.- Fixed-bed ion exchange with formation or dissolution of precipitate.- Numerical Methods.- Modelling of multicomponent fixed bed ion exchange operations.- Fixed bed processes: a strategy for modelling.- Counter-current ion exchange.- Continuous ion exchange technology.- Efficient fractionation by ion exchange.- Parametric ion-exchange processes (parametric pumping and allied techniques).- IV. Industrial Applications.- Ion exchange in industry.- Applications of ion exchange in hydrometallurgy.- Some of the uses of ion-exchangers in hydrometallurgy.- Reaction processes involving ion-exchange resins.- Zeolites: some catalytic applications.- V. Alternative Processes.- Ion exchange membranes: principles, production and processes.- Kinetics of metal extraction: rate controlling steps and experimental techniques used to establish a design equation.- The surfactant liquid membrane: applications to metal extraction and pollution control.- Reaction reversibility in batch and continuous extractors using emulsion liquid membranes.- Fixed bed cementation experiments.- List of Participants and Lecturers.