Gold mining is very expensive industry and therefore opportunities resulting in low cost gold production are needed, which is spurring the utilization of secondary resources such as tailings and e-waste for gold recovery. In this project, new electrochemical reactor designs for this purpose are investigated. Additive manufacturing (AM, 3D-printing) will be effectively utilized in the construction of the cell components including especially electrodes. Electro-efficiency of the recovery systems are maximized in order to increase the sustainability of the novel processes. The expected main result is an environmentally friendly closed-loop gold recovery system that provides a viable option for any valuable/critical metal recycling from the secondary resources. Also, important information will be achieved from the utilizing AM technology in the production of complex geometries utilizing different starting materials.