Patent ID: 6264399
Filing Date: 2001-07-24
Classification: B09C,Y10S

Abstract:
A method for remediating soil which is contaminated by one or more hydrophobic organic chemicals, comprising:contacting the contaminated soil with an aqueous composition comprising a surfactant prepared by reacting a sulfonate of the formula ##STR10##an amine of the formulaR.sup.6 R.sup.7 NH or R.sup.8 (NH.sub.2).sub.nwherein R.sup.1 is hydrogen or methyl, R.sup.2 is hydrogen or an alkyl group containing up to 18 carbon atoms, and each of R.sup.3, R.sup.4 and R.sup.5 is individually hydrogen or an alkyl group containing up to 7 carbon atoms and M is an alkali metal, an alkaline earth metal or --NR.sup.10 R.sup.11 R.sup.12 wherein R.sup.10, R.sup.11 and R.sup.12 are independently hydrogen or hydrocarbyl groups containing from 1 to 22 carbon atoms,wherein R.sup.6 comprises a hydrocarbyl group, a hydroxyhydrocarbyl group, an alkoxyhydrocarbyl group wherein up to 12 carbon atoms are in the alkoxy group or an aminohydrocarbyl group, wherein the hydrocarbyl group contains from 6 to 50 carbon atoms, or R.sup.9 NH(CH.sub.2).sub.3 -- wherein R.sup.9 comprises a hydrocarbyl group, a hydroxyhydrocarbyl group, an alkoxyhydrocarbyl group wherein up to 12 carbon atoms are in the alkoxy group or an aminohydrocarbyl group, wherein the hydrocarbyl group contains from 6 to 50 carbon atoms; R.sup.7 is --(CH.sub.2).sub.3 NH.sub.2 ; n is 1 or 2 and when n is 1, R.sup.8 comprises a hydrocarbyl group, a hydroxyhydrocarbyl group, an alkoxyhydrocarbyl group wherein up to 12 carbon atoms are in the alkoxy group or an aminohydrocarbyl group, wherein the hydrocarbyl group contains from 6 to 50 carbon atoms and when n is 2, R.sup.8 is a hydrocarbylene group containing from 6 to 50 carbon atoms ##STR11##whereby at least a portion of said hydrophobic organic chemical becomes associated with said aqueous composition.