Because of the importance and extensive use of palladium, gold and cobalt metals in high-technology equipment, their recovery and recycling constitute an important industrial challenge. The metal recovery system described herein is a simple, low-cost means for the effective detection, removal, and recovery of these metals from the urban mine.
Total time
~3–5 days (material synthesis, characterization, and extraction experiments)
Steps
1
Fabricate nanoscale metal-sensing adsorbent materials
Synthesize wagon-wheel-shaped porous adsorbent materials using the described methodology. This step establishes the functional substrate for subsequent metal detection and recovery.
▶ 00:59
2
Characterize fabricated material structure and properties
Perform spectroscopic and microscopic characterization to confirm material morphology, pore structure, and chemical composition. Verification ensures adsorbent quality before metal binding experiments.
▶ 03:04
3
Measure ion detection and metal-ligand binding constants
Conduct ion detection assays and determine binding affinities between target metals (palladium, gold, cobalt) and the adsorbent material. Quantify metal removal efficiency from solution.
▶ 04:32
4
Extract metals from urban mine using selective system
Apply the optimized selective-ion extraction protocol to process real electronic waste or urban mine samples. Isolate and concentrate target metals for recovery.
▶ 06:12
5
Verify detection and recovery of target metal ions
Analyze extracted metals and quantify recovery yield and purity from urban mine samples. Confirm selectivity and effectiveness of the detection and removal system.
▶ 07:24