scholarly journals Recovery of Molybdenum and Vanadium from Spent Hydrodesulfurization Catalysts by Means of Liquid-Liquid Extraction.

1995 ◽  
Vol 21 (3) ◽  
pp. 451-456 ◽  
Author(s):  
Pingwei Zhang ◽  
Katsutoshi Inoue ◽  
Hiromi Tsuyama
Keyword(s):  
Liquid Extraction ◽  
Hydrodesulfurization Catalysts ◽  
Liquid Liquid Extraction

Recovery of metal values from spent hydrodesulfurization catalysts by liquid-liquid extraction

1995 ◽  
Vol 9 (2) ◽  
pp. 231-239 ◽  
Author(s):  
Pingwei Zhang ◽  
Katsutoshi Inoue ◽  
Hiromi Tsuyama
Keyword(s):  
Liquid Extraction ◽  
Hydrodesulfurization Catalysts ◽  
Liquid Liquid Extraction

Comparison of Sorption and Extraction Methods for Recovery of Trace Organics from Water

1983 ◽  
Vol 15 (6-7) ◽  
pp. 149-159 ◽  
Author(s):  
V C Blok ◽  
G P Slater ◽  
E M Giblin
Keyword(s):  
Solvent Extraction ◽  
Methylene Chloride ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Standard Mixture ◽  
Liquid Liquid Extraction ◽  
Trace Organics ◽  
Tenax Gc

Several commercially available adsorbents were compared with solvent extraction methods for their utility in recovering trace organics from water. The adsorbents examined included Amberlite XAD-2, XAD-4 and XAD-8, Ambersorb XE340 and XE348 and Tenax-GC. All were found to produce high artifact levels, even after extensive clean-up, making them unsuitable for the analysis of trace organics in water. Quantitatively, Likens-Nickerson or continuous liquid-liquid extraction with méthylene chloride gave better recoveries than the adsorbents. Qualitatively, extractive methods were preferred as they yielded much lower levels of impurities than the adsorbents. These methods of recovering trace organics were evaluated using a standard mixture of compounds added to the water at a level of 55 µg/l. Likens-Nickerson extraction gave comparable recoveries of this mixture at 55 µg/l and 11 µg/l.

Sign in / Sign up

Export Citation Format

Share Document