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

doi:10.1016/j.cjche.2014.11.014

摘要/Abstract

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

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

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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