Technoeconomic Assessment of Organic Halide Based Gold Recovery from Waste Electronic and Electrical Equipment

摘要: Waste Electronic and Electrical Equipment (WEEE) is one of the fastest growing waste streams worldwide, with significant economic value due to precious metals contained within. Currently, only a small share total globally produced quantity treated effectively large amount valuable non-renewable resources are being wasted. Moreover, methods currently applied in industry on scale not always environmentally friendly. Thus, an economically viable friendly method that would achieve high recovery certain elements sought. The objective this paper assess four different organic halides as leaching agents for gold from WEEE. Two them have been previously tested (namely N-bromosuccinimide, NBS, N-chlorosuccinimide, NCS) shown promising results, whereas other two novel were selected their lower toxicity levels (trichloroisocyanuric acid, TCICA, tribromoisocyanuric TBICA). Both commercially supplied pure powder WEEE dust recycling company used source. Results show technical standpoint, NBS superior solution both substrates, reaching 61% 99% extraction efficiency gold, respectively. three recorded (with highest 36% NCS, 53% TCICA 29% However, taking into account price expenses process, lixiviants (NBS, NCS TCICA) could be potentially profitable larger scale.