Phosphonate dibutyl, butyl-, extraction

Chemistry. Dibutyl butyl phosphonate [DBBP = (C4H9O72TC4H9TPO]- diluent solutions extract Am(III) and HNO3 from aqueous nitrate media according to the reactions shown in Equations (1) and (2), respectively ... 

Another category of extractants is the neutral or solvating category. These are often phosphorus based, commonly consisting of substituted phosphine oxides or phosphate esters. Common examples applied to the extraction of U include tri-n-butyl phosphate and trioctyl phosphine oxide, whereas dibutyl butyl phosphonate has been used for the extraction of As species. They solvate the species of interest, thus making the target solute soluble in the membrane liquid phase. 

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