Extraction of metals from automotive shredder residue: Preliminary results of different leaching systems

doi:10.1016/j.cjche.2014.11.014

Abstract

Abstract: The study is focused on the extraction of valuable metals from automotive shredder residue (ASR) by different leaching solutions. First, ASR samples were roasted at 600℃ to simulate a thermal treatment processing. Distilled water, citric and sulphuric acid were preliminarily investigated, thus two further full factorial systems entailing H₂SO₄-H₂O₂ and H₂SO₄-H₂O₂-Fe³⁺ were tested. The preliminary experimental results showed that 0.1 mol·L^-1 H₂SO₄ solution extracted 100% of Cu, Fe and Zn, whereas citric acid leached 100% of Zn and Pb, 59% of Fe and 62% of Cu; whereas, H₂SO₄-H₂O₂ and H₂SO₄-H₂O₂-Fe³⁺ (Fenton's) leaching media showed that Cu, Fe and Zn can be extracted simultaneously and completely from the ASR ashes before final disposal.

Key words: ASR Vehicles, Automotive, Metals, Leaching, ANOVA

摘要： The study is focused on the extraction of valuable metals from automotive shredder residue (ASR) by different leaching solutions. First, ASR samples were roasted at 600℃ to simulate a thermal treatment processing. Distilled water, citric and sulphuric acid were preliminarily investigated, thus two further full factorial systems entailing H₂SO₄-H₂O₂ and H₂SO₄-H₂O₂-Fe³⁺ were tested. The preliminary experimental results showed that 0.1 mol·L^-1 H₂SO₄ solution extracted 100% of Cu, Fe and Zn, whereas citric acid leached 100% of Zn and Pb, 59% of Fe and 62% of Cu; whereas, H₂SO₄-H₂O₂ and H₂SO₄-H₂O₂-Fe³⁺ (Fenton's) leaching media showed that Cu, Fe and Zn can be extracted simultaneously and completely from the ASR ashes before final disposal.

关键词: ASR Vehicles, Automotive, Metals, Leaching, ANOVA

Francesco Ferella, Ida De Michelis, Agostino Scocchera, Mario Pelino, Francesco Vegliò. Extraction of metals from automotive shredder residue: Preliminary results of different leaching systems[J]. , 2015, 23(2): 417-424.

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