End‐of‐life CIGS photovoltaic panel: A source of secondary indium and gallium

Amato, Alessia; Beolchini, Francesca

doi:10.1002/pip.3082

Cited by 20 publications

(13 citation statements)

References 36 publications

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“…308549). Overall, the main process' innovation is the combination of known techniques, already used for metal extraction and recovery for both waste and minerals, for LCD treatment [15,[31][32][33]. Starting from the previous achievements, the present research aimed to further improve weaknesses in the process to increase the entire sustainability level.…”

Section: Methodsmentioning

confidence: 99%

End-of-Life Liquid Crystal Display Recovery: Toward a Zero-Waste Approach

et al. 2019

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End-of-life liquid crystal displays (LCD) represent a possible source of secondary raw materials, mainly glass and an optoelectronic film composed of indium (90%) and tin (10%) oxides. A strong interest for indium, classified as critical raw material, pushed research towards the development of high-efficiency recycling processes. Nevertheless, a deepened study of the technological innovation highlighted that only a small number of treatments included use of whole waste. Furthermore, these processes often need high temperatures, long times, and raw materials that have a significant environmental impact. In this context, this article shows an approach developed in accordance with the “zero waste” principles for whole, end-of-life LCD panel recycling. This process includes preliminary grinding, followed by cross-current acid leaching and indium recovery by zinc cementation, with efficiencies greater than 90%. A recirculation system further increases sustainability of the process. To enhance all waste fractions, glass cullets from leaching are used for concrete production, avoiding their disposal in landfill sites. Considering the achieved efficiencies, combined the simple design suitable for real-scale application (as confirmed by the related patent pending), this process represents an excellent example of implementing circular economy pillars.

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Section: Methodsmentioning

confidence: 99%

End-of-Life Liquid Crystal Display Recovery: Toward a Zero-Waste Approach

et al. 2019

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“…The first cluster, in yellow, is represented by Alessia Amato and Francesca Beolchini. These authors belong to the Università Politecnica delle Marche and have five investigations, sharing co-authorship in all of them [84][85][86][87]. Likewise, in "Sustainability analysis of innovative technologies for the rare earth elements recovery" [88], demonstrating the environmental and economic benefits derived from the production of rare earth elements from waste, a co-author of the red cluster (Francesco Ferella) is located.…”

Section: Characteristics Of the Main Institutions Throughout The Investigationmentioning

confidence: 99%

Implications for Sustainability of the Joint Application of Bioeconomy and Circular Economy: A Worldwide Trend Study

et al. 2021

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The joint application of bioeconomy (BE) and circular economy (CE) promotes the sustainable use of natural resources, since by applying a systemic approach, it improves the efficiency of these resources and reduces the impact on the environment. Both strategies, which belong to the area of green economy, provide a global and integrated approach towards environmental sustainability, as regards the extraction of biological materials, the protection of biodiversity and even the primary function of food production in agriculture. The objective was to analyze the implications for sustainability of BE and CE joint application. A systematic and bibliometric review has been applied to a sample of 1961 articles, selected from the period 2004–May 2021. A quantitative and qualitative advance is observed in this field of study. The expansion of scientific production is due to its multidisciplinary nature, since it implies technical, environmental and economic knowledge. The main contribution of this study is to understand the state of research on the implications for sustainability that BE and CE have when combined, in relation to their evolution, the scientific collaboration between the main driving agents, and the identification of the main lines of research developed.

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“…Considering the absorption of exhaust gas, both selenium purification and chlorination roasting have high requirements on the reaction equipment. Amato and Beolchini explored a method of recovering indium and gallium from the spent CIGS photovoltaic panel by adding different catalysts in different leaching systems. Utilization of citric acid as a leaching agent as well as addition of H 2 O 2 were found to be able to achieve good leaching results.…”

Section: Introductionmentioning

confidence: 99%

Effective Separation and Recovery of Valuable Components from CIGS Chamber Waste via Controlled Phase Transformation and Selective Leaching

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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Copper indium gallium diselenide (CIGS) chamber waste formed during CIGS solar-cell production was subjected to two-stage sulfation roasting for controlled phase transformation and selective leaching to separate valuable components. Selenium was initially separated in the first stage of sulfation roasting. Under the optimal conditions, 99.96% of selenium was volatilized into gas in the form of selenium dioxide, and the remaining components were converted to sulfates. The second stage of roasting followed by water leaching was investigated for the separation and recovery of the remaining components in slag. Controlled phase transformation of sulfates was completed in the second stage roasting. Indium and gallium sulfates are converted to oxides, whereas CuSO4 remained nearly unchanged. Afterward, 95.90% of copper was selectively leached into liquor, and the leaching rates of indium and gallium were only 5.67% and 2.89%, respectively. Consequently, the content of mixed indium and gallium oxides in the leach residue was 91.09%. Exploratory experiments show that indium and gallium can be effectively separated via alkali leaching and precipitation. Therefore, effective separation of valuable metals from CIGS chamber waste was achieved based on the different physical and chemical properties of the components.

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End‐of‐life CIGS photovoltaic panel: A source of secondary indium and gallium

Cited by 20 publications

References 36 publications

End-of-Life Liquid Crystal Display Recovery: Toward a Zero-Waste Approach

End-of-Life Liquid Crystal Display Recovery: Toward a Zero-Waste Approach

Implications for Sustainability of the Joint Application of Bioeconomy and Circular Economy: A Worldwide Trend Study

Effective Separation and Recovery of Valuable Components from CIGS Chamber Waste via Controlled Phase Transformation and Selective Leaching

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