Birko Corporation

Dana J Johnson

Terry L McAninch

Frederick W Holzhauer

A method for cleaning used beer kegs employing an aqueous solution of phosphoric acid, nitric acid and one or more surfactants, e.g., a detergent and/or wetting agent. Preferably, the aqueous cleaning solution has a total nitric acid content of 12 wt % or less. Complete cleaning can be achieved without using any caustic. The cleaning solution can be recycled repeatedly to clean multiple kegs on numerous occasions over a period of time, e.g., several weeks.

Method of cleaning beer kegs and other brewery processing equipment

The invention relates to an improved hide-curing additive comprising an effective biocidal amount of an essential oil and a non-ionic surfactant. The improved additive provides an effective cure for the hides, is environmentally safe and economical.

Hide-curing additive

A process for the separation and purification of fat-containing waste water including the step of adding an effective flocculating and oxidizing amount of a composition comprising:

Waste water treatment with peracid compositions

A process for the separation and purification of fat-containing waste water including the step of adding an effective flocculating and oxidizing amount of a composition including:

Waste water treatment with peracetic acid compositions

A process for the curing of animal hides using a brine solution including the step of adding an effective bactericidal and flocculating amount of a composition comprising: 10-30 wt. % acetic acid 5-20 wt. % peracetic acid 15-25 wt. % hydrogen peroxide 1-10 wt. % phosphoric acid balance water Other peracids, such as, perlactic acid, percitric acid, perproprionic acid, perbenzoic acid, perpentenoic acid and perbutyric acid may be used.

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Broomfield, CO, United States of America

Dana J Johnson