Kinetics Leaching Process of Uranium Ions from El-Erediya Rock by Sulfuric Acid Solution

2016 ◽  
Vol 6 (0) ◽  
pp. 35 ◽  
Author(s):  
Yasser Khawassek ◽  
Ahmed Eliwa ◽  
Elsayed Haggag ◽  
Saad Mohamed ◽  
Sayed Omar
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Leaching Process ◽  
Uranium Ions

scholarly journals INCREASING OF METAL RECOVERY IN LEACHING PROCESS OF SPENT CATALYST AT LOW TEMPERATURE: THE ADDITION OF HYDROGEN PEROXIDE AND SODIUM CHLORIDE

Metalurgi ◽  
2021 ◽  
Vol 36 (2) ◽  
Author(s):  
Kevin Cleary Wanta ◽  
Edward Yonathan Natapraja ◽  
Ratna Frida Susanti ◽  
Gelar Panji Gemilar ◽  
Widi Astuti ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Sodium Chloride ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Chloride Concentration ◽  
Sodium Chloride Concentration ◽  
Spent Catalyst ◽  
Nickel Recovery ◽  
Leaching Process

One of the factors that affect the leaching process of a mineral source is the mineral characteristics of the raw materials. Not all mineral phases can be leached directly and completely. Thus, some minerals require special treatment so that the leaching process can take place optimally. This study will focus on studying the effect of additive compounds addition, i.e. hydrogen peroxide and sodium chloride, in the leaching process of spent catalyst using a sulfuric acid solution. The leaching process was carried out at a concentration of 1 M sulfuric acid solution for 240 minutes at room temperature. The hydrogen peroxide concentration was varied at 0–9%v/v, while the sodium chloride concentration was varied at 0–0.8 mol/L. The experimental results showed that the two additive compounds were able to increase nickel recovery significantly. The highest nickel recovery of 95.08% was achieved when hydrogen peroxide was used at 9%v/v. The nickel recovery is 3.5 times higher than without the addition of hydrogen peroxide. Meanwhile, sodium chloride concentration of 0.8 mol/L was able to provide the highest nickel recovery of 50.38% or an increase of 1.9 times compared to without the addition of sodium chloride.

scholarly journals Continuos Operation of Chromium (VI) Recovery from Sulfuric Acid Solution by Liquid Surfactant Membrane.

1991 ◽  
Vol 17 (6) ◽  
pp. 1104-1109 ◽  
Author(s):  
Yasushige Mori ◽  
Shingo Hibin ◽  
Hideyuki Uemae ◽  
Masataka Tanigaki ◽  
Wataru Eguchi
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Chromium Vi
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