초록 ▼

A method of removing organic phosphorus-based poisonous substances from water contaminated therewith and of subsequently destroying the toxicity of the substance is disclosed. Initially, a water-immiscible organic is immobilized on a supported liquid membrane. Thereafter, the contaminated water is c

A method of removing organic phosphorus-based poisonous substances from water contaminated therewith and of subsequently destroying the toxicity of the substance is disclosed. Initially, a water-immiscible organic is immobilized on a supported liquid membrane. Thereafter, the contaminated water is contacted with one side of the supported liquid membrane to selectively dissolve the phosphorus-based substance in the organic extractant. At the same time, the other side of the supported liquid membrane is contacted with a hydroxy-affording strong base to react the phosphorus-based substance dissolved by the organic extractant with a hydroxy ion. This forms a non-toxic reaction product in the base. The organic extractant can be a water-insoluble trialkyl amine, such as trilauryl amine. The phosphorus-based substance can be phosphoryl or a thiophosphoryl.

대표청구항 ▼

A method of removing organic phosphorus-based poisonous substances selected from the group consisting of phosphoryl and thiophosphoryl from water contaminated therewith and of subsequently destroying the toxicity of the substances comprising the steps of: immobilizing a water immiscible organic solv

A method of removing organic phosphorus-based poisonous substances selected from the group consisting of phosphoryl and thiophosphoryl from water contaminated therewith and of subsequently destroying the toxicity of the substances comprising the steps of: immobilizing a water immiscible organic solvent on a porous hydrophobic membrane to form a supported liquid membrane, the solvent being one which will react with the phosphorous-based substance to form a solvated species and being selected from the group consisting of trialkyl amines, alcohols, ketones, aldehydes, ethers and bifunctional amines; contacting the contaminated water with one side of the supported liquid membrane to dissolve the phosphorous-based substance in the organic solvent forming a solvated organic species, the distribution ratio of the poisonous substance between the water and the organic solvent being greater than two; and contacting the other side of the supported liquid membrane with a solution containing a hydroxy-affording strong base to react with dissolved phosphorous-based substance in the organic solvent to form a nontoxic reaction product in the base, the distribution ratio of the solvated organic species in the solvent and the strong base being 0.5 or less.