Selective Gold Recovery Using Orange Waste
Orange waste was crosslinked with sulfuric acid to immobilize the hesperetin-like molecule. Au(III) was selectively recovered from hydrochloric acid, exhibiting the negligible affinity to other precious metals and base metal ions. The isotherm demonstrated that the maximum loading capacity
on the crosslinked orange waste is approximately 10 mol/kg, suggesting that orange waste has a high possibility for commercial application for gold recovery.