Recovery of Cu and Fe from Printed Circuit Board waste sludge by ultrasound: Evaluation of industrial application

Multiple heavy metals extraction and recovery from hazardous electroplating sludge waste via ultrasonically enhanced two-stage acid leaching

“…All these studies demonstrated that ultrasonic power could enhance either extraction or leaching rates of metals, while metals themselves, even it leached more effectively, were still co-dissolved in an aqueous solution and were not separated among them so they could not be recovered as reused resource materials. Xie et al [19,20] provided an ultrasonically assisted acid leaching process to recover heavy metals from Print Circuit Board (PCB) waste sludge. The ultrasonically assisted leaching achieved a complete separation between Cu and Fe from the sludge and demonstrated that ultrasonic energy greatly enhanced metal selectivity of an acid leaching process.…”

Potentials for Improvement of Resource Efficiency in Printed Circuit Board Manufacturing: A Case Study Based on Material Flow Cost Accounting

“…The lean-based overview focused on solder effects on energy and material consumption at each stage of the life cycle material innovation [32], and creative pretreatment technologies [33][34][35] were discussed. Furthermore, these green innovations for lean production were separately referred to in each step, while the lack of system analysis was beyond the production process system.…”

Comparative study of printed circuit board recycling by cracking of internal layers using organic solvents-dimethylformamide and dimethylacetamide

“…are the most exercised pyrometallurgical WPCBs recycling technique (Flandinet et al, 2012;Guo et al, 2010;Rath et al, 2012). The exorbitant environmental impacts arising due to lethal emissions, loss of metal in vapor and complex compounds formation stringently limits the applicability of different thermal process (Bhaskar et al, 2008;Oleszek et al, 2013;Xie et al, 2009).…”