Some features found in the extraction of platinum group metals and gold with calix[4]arenamines and calix[n]arene thioethers from hydrochloric acid solutions

2012 ◽  
Vol 61 (7) ◽  
pp. 1437-1444 ◽  
Author(s):  
V. G. Torgov ◽  
G. A. Kostin ◽  
T. M. Korda ◽  
E. A. Guskova ◽  
V. I. Mashukov ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Platinum Group Metals ◽  
Acid Solutions ◽  
Hydrochloric Acid Solutions ◽  
Platinum Group

scholarly journals Liquid-liquid extraction of Pt(IV) from hydrochloric acid solutions using PPG 425 – NaCl – H2O system

2022 ◽  
Vol 1212 (1) ◽  
pp. 012011
Author(s):  
I V Zinov’eva
Keyword(s):  
Hydrochloric Acid ◽  
Platinum Group Metals ◽  
Metal Extraction ◽  
Phase System ◽  
Polypropylene Glycol ◽  
Hydrochloric Acid Concentration ◽  
Acid Solutions ◽  
Two Phase ◽  
Economic Point ◽  
Hydrochloric Acid Solutions

Abstract Today, metal extraction from e-waste is beneficial from both an environmental and economic point of view. Natural resources of metals, especially platinum group metals, are limited. At the same time, the amount of waste containing many valuable elements continues to grow. In this work, we studied the extraction of Pt (IV) from hydrochloric acid solutions using polypropylene glycol 425 (PPG 425). In the course of the experimental work, the dependence of the platinum extraction degree on the influence of hydrochloric acid concentration and medium pH in the polypropylene glycol 425 - sodium chloride - water system have been established. The maximum recovery (distribution coefficient > 3,5) has been achieved in the presence of 2 M HCl in an aqueous two-phase system (ATPS), which allows the use of the proposed system for the extraction of platinum from leaching solutions.

An ellipsometric study of mild steel in hydrochloric acid solutions

1986 ◽  
Vol 25 (3) ◽  
pp. 305-320 ◽  
Author(s):  
W.R.E. Brakenbury ◽  
R. Grzeskowiak
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Acid Solutions ◽  
Hydrochloric Acid Solutions ◽  
Ellipsometric Study
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