Method for disposing of hazardous wastes

Details Method for disposing of hazardous wastes Method for disposing of hazardous wastes

1991-05-23

1995-09-12

Corbin, David H.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

588250, 405157, B09B 500

Patent

active

054492505

ABSTRACT:
A method and system for long-term control of root growth without killing the plants bearing those roots involves incorporating a 2,6-dinitroaniline in a polymer and disposing the polymer in an area in which root control is desired. This results in controlled release of the substituted aniline herbicide over a period of many years. Herbicides of this class have the property of preventing root elongation without translocating into other parts of the plant. The herbicide may be encapsulated in the polymer or mixed with it. The polymer-herbicide mixture may be formed into pellets, sheets, pipe gaskets, pipes for carrying water, or various other forms. The invention may be applied to other protection of buried hazardous wastes, protection of underground pipes, prevention of root intrusion beneath slabs, the dwarfing of trees or shrubs and other applications. The preferred herbicide is 4-difluoromethyl-N,N-dipropyl- 2,6-dinitro-aniline, commonly known as trifluralin.

REFERENCES:
patent: 4453857 (1984-06-01), Serra
patent: 4464081 (1984-08-01), Hillier et al.
patent: 4988236 (1991-01-01), Ramsey et al.

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