Extraction of Lead by Cyanex 302 From Phosphoric Acid Media

Correlation of the Extraction Constant Values of Zn2+ and Cd2+ from Phosphoric Acid Media by Bis(2,4,4-trimethylpentyl)dithiophosphinic Acid Dissolved in Toluene

“…The stoichiometric extraction constants increase with the total phosphoric acid concentration for both metal ions, in agreement with the results obtained for extraction of Pb 2+ [16] and Cd 2+ [15] under similar experimental conditions. The extraction constant values of Cd 2+ vary from 6.91 to 7.60 (in logarithmic units), whereas the variation is larger for Zn 2+ (from 3.01 to 5.34).…”

Studies on thermo-acoustic parameters in binary liquid mixtures of phosphinic acid (Cyanex 272) with different diluents at temperature 303.15K: an ultrasonic study

“…In the field of hydrometallurgy, different phosphinic acids in the trade name Cyanex have been utilized in combination with different diluents and modifiers for the extraction of various metal ions [1][2][3][4][5][6]. Besides, review of the literature shows that Cyanex 272 has been employed most frequently by many workers for such extraction [1,2,6].…”

Coupled transport of Pb2+ through tri‐n‐octylamine‐xylene‐polypropylene supported liquid membranes

“…Various researchers have studied the extraction of lead by different techniques, like ion exchange (Inglezakis and Grigoropoulau, 2003;Kavallieratos et al, 2005), solvent extraction (Menoyo et al, 2001;Shilimkar and Anuse, 2002), cloud point methodology (Manzoori and Zadeh, 2007;Ghaedi et al, 2004) and sorption (Lamb and Nazarenko, 1997;Ghaedi et al, 2007;Burham, 2009). Various researchers have studied the extraction of lead by different techniques, like ion exchange (Inglezakis and Grigoropoulau, 2003;Kavallieratos et al, 2005), solvent extraction (Menoyo et al, 2001;Shilimkar and Anuse, 2002), cloud point methodology (Manzoori and Zadeh, 2007;Ghaedi et al, 2004) and sorption (Lamb and Nazarenko, 1997;Ghaedi et al, 2007;Burham, 2009).…”

“…Due to the severe toxic effect of lead, it is necessary to remove lead from the environment for its safe disposal. Various researchers have studied the extraction of lead by different techniques, like ion exchange (Inglezakis and Grigoropoulau, 2003;Kavallieratos et al, 2005), solvent extraction (Menoyo et al, 2001;Shilimkar and Anuse, 2002), cloud point methodology (Manzoori and Zadeh, 2007;Ghaedi et al, 2004) and sorption (Lamb and Nazarenko, 1997;Ghaedi et al, 2007;Burham, 2009). However, these processes have some shortcomings, such as incomplete metal ion removal, enhanced capital cost due to costly equipment and solvents and generation of toxic sludge (Gyves and De San Miguel, 1999;Kocherginsky and Yang, 2007).…”