Detection of Metal Ion Hydrolysis by Coagulation. VII. Neptunium(IV)1,2

1966 ◽  
Vol 70 (12) ◽  
pp. 3825-3829 ◽  
Author(s):  
J. O. Wear ◽  
E. Matijević
Keyword(s):  
Metal Ion ◽  
Metal Ion Hydrolysis

DETECTION OF METAL ION HYDROLYSIS BY COAGULATION. IV.1ZINC2

1962 ◽  
Vol 66 (1) ◽  
pp. 111-114 ◽  
Author(s):  
E. Matijević ◽  
J. P. Couch ◽  
M. Kerker
Keyword(s):  
Metal Ion ◽  
Metal Ion Hydrolysis

Hydrolysis of the thorium(IV) ion in sodium nitrate medium

1982 ◽  
Vol 60 (11) ◽  
pp. 1298-1303 ◽  
Author(s):  
Nikola B. Milić ◽  
Terezija M. Šuranji
Keyword(s):  
Sodium Nitrate ◽  
Metal Ion ◽  
Linear Free Energy Relationship ◽  
Emf Method ◽  
Nitrate Medium ◽  
Linear Free Energy ◽  
Metal Ion Hydrolysis ◽  
Stability Constants Of Complexes ◽  
The Stability ◽  
Hydrolysis Of

The hydrolysis of the thorium(IV) ion in sodium nitrate medium was studied by the emf method at 25 °C. The data show that the extent of the thorium hydrolysis depends both on the concentration of thorium and the sodium nitrate medium. Thus, at a definite pH, the extent of the hydrolysis of thorium increases with increasing its concentration, but decreases with increasing concentration and the hydration energy of the medium ions. The stability constants of complexes Th2(OH)26+, Th3(OH)57+, and Th6(OH)159+ also slightly differ going from one concentration of sodium nitrate to another. The observed effect of the medium is in agreement with the linear free energy relationship proposed for the metal ion hydrolysis.

Unconventional mesoporous single crystalline NiO by synergistically controlled evaporation and hydrolysis

2017 ◽  
Vol 5 (45) ◽  
pp. 23840-23843 ◽  
Author(s):  
Hao Wu ◽  
Jing Geng ◽  
Peng Han ◽  
Hongtao Ge ◽  
Abdullah M. Alenizi ◽  
...  
Keyword(s):  
Single Crystal ◽  
Metal Ion ◽  
Solvent Evaporation ◽  
Single Crystalline ◽  
Metal Ion Hydrolysis

Mesoporous single-crystal NiO was synthesized by controlling metal ion hydrolysis and solvent evaporation rates, exhibiting excellent electrochemical activities.

Effect of colloids on radionuclide migration for performance assessment of HLW disposal in Japan

2001 ◽  
Vol 73 (12) ◽  
pp. 2027-2037 ◽  
Author(s):  
S. Kurosawa ◽  
S. Ueta
Keyword(s):  
Performance Assessment ◽  
Metal Ion ◽  
Fractured Rock ◽  
Experimental Studies ◽  
Radionuclide Migration ◽  
Metal Ion Hydrolysis ◽  
Engineered Barrier ◽  
Bentonite Colloid ◽  
Major Factors ◽  
High Level

Colloidal effect is one of the major factors to enhance the migration of radionuclides in groundwater. The experimental and theoretical studies of colloid mobility and colloid-facilitated radionuclide transport for the performance assessment of high-level radioactive waste (HLW) geological disposal is presented in this paper. The major aims of the study are (1) to study the filtration effect on colloids by the engineered barrier system, (2) to study bentonite colloid generation by erosion of the engineered barrier system, and (3) to calculate radionuclide migration with groundwater colloids through fractured rock systems. Alternative coagulants based on prehydrolyzed forms of aluminium or iron can be more effective than the traditional materials in many cases, but their mode of action is not completely understood, especially with regard to the role of charge neutralization and hydroxide precipitation. Basic principles of colloid stability and metal ion hydrolysis are briefly reviewed, and the action of hydrolyzing metal coagulants is then discussed, with some examples from recent experimental studies. Although it is possible to interpret results reasonably well in terms of established ideas, there are still some uncertainties that need to be resolved

scholarly journals Magnesium(II) d-Gluconate Complexes Relevant to Radioactive Waste Disposals: Metal-Ion-Induced Ligand Deprotonation or Ligand-Promoted Metal-Ion Hydrolysis?

2019 ◽  
Vol 58 (10) ◽  
pp. 6832-6844 ◽  
Author(s):  
Bence Kutus ◽  
Csilla Dudás ◽  
Eszter Orbán ◽  
Alexandru Lupan ◽  
Amr A. A. Attia ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Metal Ion ◽  
Metal Ion Hydrolysis

Microtubule Templated Synthesis of Inorganic Nanomaterials

2004 ◽  
Vol 823 ◽  
Author(s):  
Andrew K. Boal ◽  
Thomas J. Headley ◽  
Ralph G. Tissot ◽  
Bruce C. Bunker
Keyword(s):  
Metal Oxide ◽  
Metal Ion ◽  
Metal Sulfide ◽  
Oxide Coating ◽  
Biomimetic Synthesis ◽  
Templated Synthesis ◽  
Metal Ion Hydrolysis ◽  
Metallic Nanomaterials ◽  
Inorganic Nanomaterials ◽  
Co Precipitation

AbstractProtein microtubules (MTs) have been used as templates for the biomimetic synthesis of metal oxide, metal sulfide, and metallic nanomaterials. These materials were coated onto MTs via three distinct synthetic pathways: metal ion hydrolysis which yielded iron oxide or zinc oxide-coated microtubules, metal ion/sulfide co-precipitation which yielded zinc sulfide coated MTs, and metal ion reduction which yielded gold-coated MTs. The growth process of metal oxide coating involves heterogeneous nucleation on the MT surface and produces even, microcrystalline films. Metal sulfide and metal coating initially involves the formation of nanoparticle arrays that decorate the MT surface and can eventually lead to either semi- or fully continuous coatings.

scholarly journals Hydrolyzing metal salts as coagulants

2001 ◽  
Vol 73 (12) ◽  
pp. 2017-2026 ◽  
Author(s):  
John Gregory ◽  
Jinming Duan
Keyword(s):  
Mode Of Action ◽  
Metal Ion ◽  
Colloidal Particles ◽  
Experimental Studies ◽  
Water And Wastewater Treatment ◽  
Charge Neutralization ◽  
Charged Colloids ◽  
Coagulant Dosage ◽  
Metal Ion Hydrolysis

Aluminium and ferric salts are widely used as coagulants in water and wastewater treatment. They are effective in removing a broad range of impurities from water, including colloidal particles and dissolved organic substances. Their mode of action is broadly understood in terms of essentially two mechanisms: charge neutralization of negatively charged colloids by cationic hydrolysis products and incorporation of impurities in an amorphous precipitate of metal hydroxide. The relative importance of these two mechanisms depends on many factors, especially pH and coagulant dosage. Alternative coagulants based on prehydrolyzed forms of aluminium or iron can be more effective than the traditional materials in many cases, but their mode of action is not completely understood, especially with regard to the role of charge neutralization and hydroxide precipitation. Basic principles of colloid stability and metal ion hydrolysis are briefly reviewed, and the action of hydrolyzing metal coagulants is then discussed, with some examples from recent experimental studies. Although it is possible to interpret results reasonably well in terms of established ideas, there are still some uncertainties that need to be resolved

DETECTION OF METAL ION HYDROLYSIS BY COAGULATION. III.1ALUMINUM2

1961 ◽  
Vol 65 (5) ◽  
pp. 826-830 ◽  
Author(s):  
E. Matijević ◽  
K. G. Mathai ◽  
R. H. Ottewill ◽  
M. Kerker
Keyword(s):  
Metal Ion ◽  
Metal Ion Hydrolysis
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