Basf Se Corporation

The University of British Columbia

Stefan Fassbender

Stephan Hueffer

Frieder Borgmeier

David B Dreisinger

Stephan Hüffer

Markus Hartmann

Arnulf Lauterbach

Guenter Renz

Zhenghui Wu

Peter Petersen

Peter Kolb

Sonja Fischer

Günter Renz

Christoph Lessig

In an example of a method for recovering lead from a lead material including lead sulfide, methane sulfonic acid is selected as a leaching acid for the lead material. The lead material is exposed to a solution including the methane sulfonic acid and i) ferric methane sulfonate or ii) oxygen, which leaches lead from the lead sulfide in the lead material, and generates a liquid leachate including a lead-methane sulfonate salt. The liquid leachate is purified, and lead is recovered from the purified liquid leachate using electrolysis.

Recovering lead from a lead material including lead sulfide

In an example of a method for recovering lead from a mixed oxidized lead material, methane sulfonic acid is selected as a leaching acid for the mixed oxidized lead material. The mixed oxidized lead material is exposed to a solution including the methane sulfonic acid, which leaches lead from any of a lead oxide or a lead carbonate in the mixed oxidized lead material, and generates a liquid leachate including a lead-methane sulfonate salt. The liquid leachate is purified, and lead is recovered from the purified liquid leachate using electrolysis.

Recovering lead from a mixed oxidized material

Formulations, their use as or for producing dishwashing compositions and their preparation

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Speyer, Germany

Stefan Fassbender