Electrolytic reduction of U(VI) to U(IV) in acidic chloride and acidic sulfate solutions

1986 ◽  
Vol 17 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Hiroshi Majima ◽  
Yasuhiro Awakura ◽  
Shuichiro Hirono
Keyword(s):  
Electrolytic Reduction ◽  
Sulfate Solutions ◽  
Acidic Sulfate ◽  
Acidic Chloride

Codeposition of copper and tin from acidic sulfate solutions containing polyethylene glycols. Effect of length of the hydrocarbon chain

2008 ◽  
Vol 14 (4) ◽  
pp. 507-514 ◽  
Author(s):  
Arvydas Survila ◽  
Dalia Bražinskienė ◽  
Stasė Kanapeckaitė ◽  
Zenius Mockus ◽  
Vitalija Jasulaitienė
Keyword(s):  
Hydrocarbon Chain ◽  
Polyethylene Glycols ◽  
Sulfate Solutions ◽  
Acidic Sulfate

Study on schwertmannite production from copper heap leach solutions and its efficiency in arsenic removal from acidic sulfate solutions

2014 ◽  
Vol 147-148 ◽  
pp. 30-40 ◽  
Author(s):  
Sengpasith HoungAloune ◽  
Takahiro Kawaai ◽  
Naoki Hiroyoshi ◽  
Mayumi Ito
Keyword(s):  
Arsenic Removal ◽  
Heap Leach ◽  
Sulfate Solutions ◽  
Acidic Sulfate

scholarly journals The oxidation of Fe(II) with Cu(II) in acidic sulfate solutions with air at elevated pressures

2018 ◽  
Vol 206 (4) ◽  
pp. 454-475
Author(s):  
Wouter N. Wermink ◽  
Dmitri Spinu ◽  
Geert F. Versteeg
Keyword(s):  
Elevated Pressures ◽  
Sulfate Solutions ◽  
Acidic Sulfate

scholarly journals SORPTION EXTRACTION OF PLATINUM METALS FROM CHLORIDE – SULFATE AND SULFATE ACIDIC SOLUTIONS BY POLYACRYLONITRILE FIBERS FIBAN

2019 ◽  
Vol 62 (11) ◽  
pp. 117-125
Author(s):  
Svetlana V. Drogobuzhskaya ◽  
Anna A. Shirokaya ◽  
Sergey A. Solov’ev
Keyword(s):  
Sulfuric Acid ◽  
Electronic Spectra ◽  
Chloride Ion ◽  
Platinum Group Metals ◽  
Platinum Metals ◽  
Sulfate Solutions ◽  
Acidic Chloride ◽  
Chloride Sulfate ◽  
Platinum Group ◽  
Degree Of Extraction

The sorption of platinum group metals by fibers FIBAN AK-22 and A-5 from acidic chloride-sulfate and sulfate solutions was studied under static conditions. FIBAN contains primary, secondary and tertiary amino groups. The degree of extraction of platinum metals is calculated. The optimal conditions of sorption from the model solutions are determined. The influence of the temperature regime on the sorption process is established. It is shown, that all platinum group metals are quantitatively extracted from acidic chloride-sulfate solutions by fiber FIBAN AK-22 regardless of the concentration of chloride ions, H2SO4 and temperature absorption. Extraction exceeds 96% at a concentration of sulfuric acid up to 3 mol/dm3 and chloride ion up to 1 mol/dm3. Extraction of osmium is maximum at a concentration of sulfuric acid and chloride ion 3 mol/dm3. The degree of extraction of platinum group metals on FIBAN A-5 is from 50 to 85% and is maximum at elevated temperature and concentrations of H2SO4 and chloride ion 1 mol/dm3 and decreases with increasing concentration of sulfuric acid. Electronic spectra of platinum metal solutions were obtained and the state of platinum metals in chloride and chloride-sulfate solutions was estimated. After the introduction of sulfuric acid into the system, changes in the electronic spectra of platinum (IV), ruthenium and osmium solutions were noted. The spectra of palladium, rhodium and iridium solutions have not changed. When extracting platinum metals from production sulfate solutions of complex composition with a high content of macro components (Ni, Cu, Fe, Te and Se), the efficiency of fiber AK-22 is shown. The advantages of fiber FIBAN AK-22 over FIBAN A-5 are noted.

Mechanism of the initial stages of iron passivation in acidic sulfate solutions

2000 ◽  
Vol 36 (4) ◽  
pp. 314-322 ◽  
Author(s):  
A. N. Podobaev ◽  
I. I. Reformatskaya ◽  
O. V. Krivokhvostova
Keyword(s):  
Sulfate Solutions ◽  
Acidic Sulfate

scholarly journals Dissolution of CuS Particles with Fe(III) in Acidic Sulfate Solutions

2018 ◽  
Vol 57 (37) ◽  
pp. 12323-12334 ◽  
Author(s):  
Wouter N. Wermink ◽  
Geert F. Versteeg
Keyword(s):  
Sulfate Solutions ◽  
Acidic Sulfate

scholarly journals REMOVED: Transport of Molybdenum from Acidic Sulfate Solutions using Alamine 336 by Non-Dispersive Solvent Extraction

2012 ◽  
Vol 44 ◽  
pp. 1514
Author(s):  
S. Porhel ◽  
J. Duhamet ◽  
G. Borda ◽  
R. Denoyel ◽  
A.P. Serond
Keyword(s):  
Solvent Extraction ◽  
Sulfate Solutions ◽  
Alamine 336 ◽  
Acidic Sulfate

Electrolytic reduction of Eu(III) to Eu(II) in acidic chloride solutions with titanium cathode

1995 ◽  
Vol 26 (1) ◽  
pp. 1175-1181 ◽  
Author(s):  
Tetsuji Hirato ◽  
Hiroshi Kajiyama ◽  
Hiroshi Majima ◽  
Yasuhiro Awakura
Keyword(s):  
Electrolytic Reduction ◽  
Chloride Solutions ◽  
Acidic Chloride ◽  
Titanium Cathode

[P86] Practical thermodynamic model for acidic sulfate solutions

Calphad ◽  
2015 ◽  
Vol 51 ◽  
pp. 400-401
Author(s):  
Hannu Sippola ◽  
Pekka A. Taskinen
Keyword(s):  
Thermodynamic Model ◽  
Sulfate Solutions ◽  
Acidic Sulfate
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