Industrial Technology Research Institute

Tyngbin Onlin

Tei-Chih Cheau

Pak-Hing Lee

Jeng-Shyong Jean

Bih-Shyang Huang

A process which incorporates the recovery of silver from photographic film into the recovery of silver from photographic development waste solution is provided. In the process, a silver bearing emulsion layer coated on the surface of the photographic film is dissolved in the waste solution which is in turn subjected to an electrolysis treatment to recover metallic silver therefrom.

Recovery of silver from photographic film and photographic development

A process for recovering silver oxide and metals from a spent silver oxide button cell. The process relates to a physical process which consists of a heating and a cooling process to separate the shell and the content (silver, silver oxide) of the spent silver oxide cell, so that silver oxide, silver and other metals such as zinc, iron and nickel can be recovered and reused.

Growing community of inventors

Hsinchu, Taiwan

Tyngbin Onlin