An integrated process for gold extraction, sorption, recovery, and purification was developed. This process was enabled by the development of novel and efficient leaching methods and new polymer sorbents that are highly selective in gold binding. Importantly, one of the polymer sorbents can be chemically recycled by depolymerization in the gold recovery step. Similarly, a pathway to chemical regeneration of the key leaching reagent was demonstrated. The overall goal of the study was to provide a mercury-and cyanide-free method for leaching and recovering gold. This goal was achieved, with demonstrated gold recovery from ore, electronic waste, and other mixedmetal waste. Industrial uptake will require upscaling polymer sorbent manufacture (especially novel sorbent poly-2), as well as the leaching and recovery steps. Coordinating the leaching and recovery chemistry with automated or semi-automated processing, liquidsolid separations, and sorbent depolymerization will also facilitate broader use. Due to the dual roles of the sorbent in quenching the leach reagents and recovering gold, the rate of gold recovery is not easy to predict so real-time analysis of gold uptake (by AAS, for instance) is required, which could be a challenge for artisanal mining operations. Additional evaluation of the integrated gold leaching and recovery methods will also be required to establish its effectiveness for other complex waste streams, refractory ore bodies, and tailings. Thorough assessment and management of complex waste streams and tailings will also be important for safe and sustainable use of this technology, especially in artisanal and small-scale operations. The prospect of recycling the leaching reagents and sorbent in close-loop systems is a promising start toward minimizing waste. The possibility of using nitrogen-rich cyanurates in the spent leach solutions and tailings as fertilizers is also an area for future exploration , as such measures could potentially be coordinated with phytoremediation and land restoration of mining sites. Future work will involve piloting these processes in mining and electronic waste recycling operations committed to eliminating the use of highly toxic substances such as cyanide lixiviants and mercury.