Process for removing contaminants from water
AssigneeCognis Corporation
InventorVirginia Lazarowitz
Life of this patent
Estimating the term…
Abstract
A process for the remediation of soil, rock or water contaminated with volatile organic compounds involving: (1) forming an emulsifier comprising: (a) a sugar surfactant; and (b) a nonionic surfactant, other than the sugar surfactant which, when combined with the sugar surfactant, provides a hydrophilic-lipophilic balance of from about 8.0 to about 13.0; (2) mixing the emulsifier with the volatile organic compounds to form a stable emulsion; and (3) removing the stable emulsion from the soil, rock or water.
Claims14
A process for the remediation of soil, rock or water contaminated with volatile organic compounds comprising:
- (1) forming an emulsifier comprising:
- (a) a sugar surfactant selected from the group consisting of an alkyl polyglycoside having the general formula I:
- R1O(R2O)b(Z)a (I)
- wherein R1 is a monovalent organic radical having from about 6 to about 30 carbon atoms;
- R2 is a divalent alkylene radical having from 2 to 4 carbon atoms;
- Z is a saccharide residue having 5 or 6 carbon atoms;
- b is a number having a value from 0 to about 12;
- a is a number having a value from 1 to about 6, a glucamide having the general formula II:
- wherein R3 is H, C1-C4 hydrocarbyl, 2-hydroxy ethyl, 2-hydroxy propyl, or a mixture thereof, and R4 is a C5-C3, hydrocarbyl moiety, preferably straight chain C7-C19 alkyl or alkenyl, or mixtures thereof;
- and Y is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain, or an alkoxylated derivative thereof, and mixtures thereof;
- and
- (b) a nonionic surfactant, other than the sugar surfactant which, when combined with the sugar surfactant, provides a hydrophilic-lipophilic balance of from about 8.0 to about 13.0;
- (2) mixing the emulsifier with the volatile organic compounds to form a stable emulsion;
- and
- (3) removing the stable emulsion from the soil, rock or water.
A process for the remediation of soil, rock or water contaminated volatile organic compounds comprising:
- (1) forming an emulsifier comprising:
- (a) an alkyl polyglycoside having the general formula I:
- R1O(R2O)b(Z)a (I)
- wherein R1 is a monovalent organic radical having from 8 to 16 carbon atoms, b is zero, and a has a value of 1.55;
- and
- (b) a fatty alcohol having from about 8 to about 14 carbon atoms which, when combined with the alkyl polyglycoside, provides a hydrophilic-lipophilic balance of from 10.4 to 10.8;
- (2) mixing the emulsifier with the volatile organic compounds to form a stable emulsion;
- and
- (3) removing the stable emulsion from the soil, rock or water.
A process for the remediation of soil, rock or water contaminated with volatile organic compounds comprising:
- (1) forming an emulsifier comprising:
- (a) a glucamide having the general formula II:
- wherein R3 is H, C1-C4 hydrocarbyl, 2-hydroxy ethyl, 2-hydroxy propyl, or a mixture thereof, and R4is a C5-C3, hydrocarbyl moiety, preferably straight chain C7-C19 alkyl or alkenyl, or mixtures thereof;
- and Y is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain, or an alkoxylated derivative thereof;
- and
- (b) a fatty alcohol having from about 8 to about 14 carbon atoms which, when combined with the alkyl polyglycoside, provides a hydrophilic-lipophilic balance of from 10.4 to 10.8;
- (2) mixing the emulsifier with the volatile organic compounds to form a stable emulsion;
- and
- (3) removing the stable emulsion from the soil, rock or water.
A process for the remediation of soil, rock or water contaminated with volatile organic compounds comprising:
- (1) forming an emulsifier comprising:
- (a) about 80% by weight of an alkyl polyglycoside having the general formula I:
- R1O(R2O)b(Z)a (I)
- wherein R1 is a monovalent organic radical having from 8 to 16 carbon atoms, b is zero, and a has a value of 1.55;
- and
- (b) about 20% by weight of a fatty alcohol having from about 8 to about 14 carbon atoms which, when combined with said alkyl polyglycoside, provides a hydrophilic-lipophilic balance of from 10.4 to 10.8;
- (2) mixing the emulsifier with the volatile organic compounds to form a stable emulsion;
- and
- (3) removing the stable emulsion from the soil, rock or water.
A process for the remediation of soil, rock or water contaminated with volatile organic compounds comprising:
- (1) forming an emulsifier comprising:
- (a) about 80% by weight of a glucamide having the general formula II;
- wherein R3 is H, C1-C4 hydrocarbyl, 2-hydroxy ethyl, 2-hydroxy propyl, or a mixture thereof, and R4 is a C5-C31 hydrocarbyl moiety, preferably straight chain C7-C19 alkyl or alkenyl, or mixtures thereof;
- and Y is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain, or an alkoxylated derivative thereof;
- and
- (b) about 20% by weight of a fatty alcohol having from about 8 to about 14 carbon atoms which, when combined with said alkyl polyglycoside, provides a hydrophilic-lipophilic balance of from 10.4 to 10.8;
- (2) mixing the emulsifier with the volatile organic compounds to form a stable emulsion;
- and
- (3) removing the stable emulsion from soil, rock or water.
Dependencies are inferred from the claim text.