Process for neutralizing sulfur-containing cells

Details Process for neutralizing sulfur-containing cells Process for neutralizing sulfur-containing cells

1990-03-15

1991-05-14

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

Regenerating, salvage or repair feature other than only...

429104, H01M 1042

Patent

active

050155415

ABSTRACT:
A process for treating a sulfur-containing cell by employing an oxidant, such as a hypochlorite, in conjunction with an alkaline hydrolysis solution, such as a sodium hydroxide solution, to react with the sulfur-containing products to produce sulfides and sulfites and then have the oxidant convert the sulfides and sulfites to soluble sulfates followed by neutralization of the solution with a suitable acid, such as sulfuric acid, to produce a solution safe for conventional disposal.

REFERENCES:
patent: 3459493 (1969-08-01), Ross
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patent: 4446213 (1984-05-01), Steinleitner
patent: 4448859 (1984-05-01), Bishop et al.
patent: 4637928 (1987-01-01), Zajac et al.
patent: 4652381 (1987-03-01), Inglis
patent: 4732824 (1988-03-01), Bindin
"Treatment and Disposal of High Energy Density Lithium Cells", by William V. Zajac, Jr., Abstract No. 13, pp. 42-43, The Electrochemical Society, Fall, 1981 Meeting, Denver, Colo., Extended Abstracts, vol. 81-2.

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