Sulphide is used in large amounts in the depilation of hides for leather before tanning, in wood pulp processing, in gelatine production and other manufacturing processes and typically ends up in the wastewater. Researchers at The University of Queensland have developed an innovative electrochemical process for recovering sulphide as elemental sulphur or polysulphide from wastewater. By recovering and recycling sulphide for use on site in an environmental and economic way, this technology has the potential to reduce the need for and costs of purchasing additional sulphide. This technology is ready for prototype trials in an industrial setting.