Treatment of mercury contaminated lakes

Details Treatment of mercury contaminated lakes Treatment of mercury contaminated lakes

1987-09-22

1988-10-25

Wyse, Tom

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210747, 210914, C02F 162

Patent

active

047802146

ABSTRACT:
The present invention relates to a method for treating lakes with selenium with the intention of lowering the mercury content of fish, and is characterized by supplying to the lake selenium in the form of a selenium salt incorporated in a carrier material capable of dispensing selenium to the surrounding water substantially continuously and in a controlled manner. The carrier material is preferably a rubber-based or silicon-based and biologically degradable material. There is preferably maintained an effective selenium level of beneath 10 .mu.g.

REFERENCES:
patent: 3679396 (1972-07-01), Stenger
patent: 4354942 (1982-10-01), Kaczur et al.
patent: 4432880 (1984-02-01), Talbot
patent: 4578195 (1986-03-01), Moore et al.
patent: 4604321 (1986-08-01), Okahara et al.
Eric Norrman, "Selen-ett livsnodvandigt sparamne", Uppsala, 1983, pp. 11 and 22.
Chemical Abstracts, vol. 103, (1985), Abstract No. 117.67g.
Can. J. Fish, Aquat. Sci., 1985, 42(6), 1132-43.

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