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. 2019 Aug 13;9(44):25303–25308. doi: 10.1039/c9ra03331a

Summary of recovery technologies for ruthenium.

Methods Conditions Reclaiming efficiency Ref.
Cementation reaction Batch, a decorative ruthenium plating workshop, 20 and 70 C, 50 mg zinc powder, 90 min Ru: <75% at T = 298.16 K, Ru: >95% at T = 338.16 K (add 1000 mg NaCl) 20
Adsorption Batch, acetic acid waste solution containing Ru, polyethylenimine modified bacterial biosorbent, 24 h Ru: 90% at T = 293.16 K ([Ru]initial = 61.6 mg L−1) 18
Adsorption Batch, Ru synthetic solution, alginate gel polymers, 2.5 M HNO3, 2 day RuNO3+: 90% at T = 298.16 K 19
Biosorption Batch, industrial effluents, Rhodopseudomonas palustris, 298.16 K and 338.16 K, 64 h Ru: 42% to 72% (biomass) ([Ru]initial = 1800 mg L−1) 33
Cementation Batch, integrated circuit foundry's wastewater, aluminum powder (88–128 μm), 2 h Ru: >99.4% at 338.16 K ([Ru]initial = 200 mg L−1) This study