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醉染图书蒙脱石改与氯酸根吸附的机理及应用拓展9787548740216
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CHAPTER 1Introduction1.1 Perchlorate: source, chemistry and distribution1.2 Transport of perchlorate in nature1.3 Toxicity and regulatory standard1.4 Technologies for removal of perchlorate1.4.1 Biodegradation1.4.2 Chemical reduction1.4.3 Physical transfer1.5 Unmodified and organo-modified montmorillonite1.5.1 Unmodified montmorillonite1.5.2 Modification of montmorillonite1.5.3 Synthesis of organo-montmorillonite1.6 Application of organo-montmorillonite1.7 Removal of perchlorate and related species by organo-montmorillonite1.8 Objectives and outline of this bookCHAPTER 2Adsorption Models and Characterizations2.1 Materials and reagents2.2 Solid characterizations. ntification of substances in aqueous solution2.4 Adsorption kinetics models2.5 Adsorption isotherm models2.5.1 Single-component system2.5.2 Multi-component system2.6 Thermodynamics2.7 Selectivity coefficient2.8 Error functionsCHAPTER 3Effect of Molecular Structure of Surfactant on Perchlorate Removal by Various Organo-montmorillonites3.1 Modification of montmorillonite using various alkyl quaternary ammonium salts3.2 Adsorption experiments3.3 Characterizations of organo-montmorillonite3.4 Adsorption capacity of perchlorate on organo-montmorillonites3.5 Adsorption kinetic of perchlorate on organo-montmorillonites3.6 Adsorption selectivity of perchlorate on organo-montmorillonites3.7 ConclusionsCHAPTER 4Surfactant-Modified Montmorillonite by Benzyl Octadecyl Dimethyl Ammonium Chloride for Removal of Perchlorate4. 1 Preparation of benzyl octadecyl dimethyl ammonium-modified montmorillonite4.2 Adsorption experiments4.3 X-ray diffraction4.4 FTIR spectroscopy4.5 TG-DTA analyses4.6 Zeta potential analyses4.7 FESEM observation and EDX analyses4.8 Adsorption characteristics4.8.1 Adsorption isotherms4.8.2 Effect of temperature4.8.3 Effect of initial solution pH4.8.4 Effect of adsorption time4.8.5 Effects of co-existing anions4.9 Influence of modifier dosage on its distribution and perchlorate uptake4.10 ConclusionsCHAPTER 5Optimization of Hexadecyl Pyridinium-Modified Montmorillonite for Removal of Perchlorate Based on Adsorption Mechanisms5.1 Preparation of hexadecyl pyridinium-modified montmorillonite and adsorption of perchlorate: in-situ and ex-situ strategies5.2 Uptake of hexadecyl pyridinium on montmorillonite5.3 Uptake of perchlorate and release of hexadecyl pyridinium5.4 Solid characterizations5.5 Isotherms and thermodynamics of perchlorate adsorption5.6 Kinetics of perchlorate adsorption5.7 Mechanisms of adsorption optimization5.8 ConclusionsCHAPTER 6Selective Adsorption of Inorganic Anions on Unwashed and Washed Hexadecyl Pyridinium-Modified Montmorillonite6. 1 Synthesis of unwashed and washed hexadecyl pyridinium-modified montmorillonite and adsorption tests6. 2 Selectivity coefficient for anion adsorption on hexadecyl pyridinium-modified montmorillonite6.3 pH and Eh of equilibrium solution6.4 Adsorption of anions by hexadecyl pyridinium-modified montmorillonites6.5 Relationships of adsorption capacity and selectivity with anionic radius and hydration energy6.6 X-ray diffraction6.7 Mechanism of selective adsorption of anion on hexadecyl pyridinium-modified montmorillonite6.8 ConclusionsCHAPTER 7Synergistic Effect of Sr2+ and ReO4− Adsorption on Hexadecyl Pyridinium-Modified Montmorillonite7. 1 Modification of montmorillonite by hexadecyl pyridinium in the specific dosage7.2 Adsorption of strontium and perrhenate ions7.3 Contents of hexadecyl pyridinium and uptakes of strontium and perrhenate ions on modified montmorillonites7.4 Adsorption isotherms for strontium and/or perrhenate ions on optimized modified montmorillonite7.5 Characterization of the solid residues after adsorption of strontium and/or perrhenate ions on optimized modified montmorillonite7.6 Mechanism of simultaneous adsorption7.7 ConclusionsCHAPTER 8Synergistic Effect of ClO4-and Sr2+ Adsorption on Alginate-Encapsulated Organo-Montmorillonite Beads: Implication for Radionuclide Immobilization8. 1 Preparation of organo-montmorillonite/alginate beads8.2 Adsorption experiment of perchlorate and/or strontium ions8.3 Adsorption characteristics of perchlorate and/or strontium ions on the organo-montmorillonite/alginate beads8.3. 1 Influence of solution pH8.3. 2 Adsorption kinetics8.3. 3 Adsorption isotherms8.4 Characterization of the organo-montmorillonite/alginate beads before and after perchlorate and/or strontium ions adsorption8.5 Extende ppicton of organo-montmorillonite/alginate beads8.6 ConclusionsReferences
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