Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste Recycling
This paper studies the influence of process parameters: temperature, the weight of the added precipitant agent, pH and reducing agent on the kinetics of the process of reduction and precipitation of gold of 98.44% purity obtained in the process of electrical and electronic waste recycling. The optim...
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2018-04-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
| Subjects: | |
| Online Access: | http://www.ijcce.ac.ir/article_30143_42300d51d8c6fd507bd7a8e6da98d226.pdf |
| _version_ | 1818806338057142272 |
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| author | Ivana Boskovic Veselinka Grudic Mileta Ivanovic Ivana Milasevic |
| author_facet | Ivana Boskovic Veselinka Grudic Mileta Ivanovic Ivana Milasevic |
| author_sort | Ivana Boskovic |
| collection | DOAJ |
| description | This paper studies the influence of process parameters: temperature, the weight of the added precipitant agent, pH and reducing agent on the kinetics of the process of reduction and precipitation of gold of 98.44% purity obtained in the process of electrical and electronic waste recycling. The optimal conditions of reduction and precipitation of colloidal gold particles in the process of recycling of different waste types in order to obtain high-purity gold are the following: an optimal process time (τ = 11minutes), temperature (t=5°C), the weight of the added precipitant (m = 6g of pure gold) and K2S2O5 as the preferred reducing agent. The results have contributed to a better understanding of the reduction and precipitation rate of colloidal gold particles in order to manage and control this process. The granulometric analysis confirms the existence of colloidal gold particles. SEM analysis indicates spherical particles and good homogeneity of the sample. XRF analysis shows that gold obtained in dis process of recycling is highly pure (99.99%). |
| first_indexed | 2024-12-18T19:08:11Z |
| format | Article |
| id | doaj.art-9e162743372c4d47abf4998c1e0eed28 |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-12-18T19:08:11Z |
| publishDate | 2018-04-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-9e162743372c4d47abf4998c1e0eed282022-12-21T20:56:21ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862018-04-0137213313830143Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste RecyclingIvana Boskovic0Veselinka Grudic1Mileta Ivanovic2Ivana Milasevic3Faculty of Metallurgy and Technology, University of Montenegro, Džordža Vašingtona bb, 81000 Podgorica, MONTENEGROFaculty of Metallurgy and Technology, University of Montenegro, Džordža Vašingtona bb, 81000 Podgorica, MONTENEGROFaculty of Metallurgy and Technology, University of Montenegro, Džordža Vašingtona bb, 81000 Podgorica, MONTENEGROFaculty of Metallurgy and Technology, University of Montenegro, Džordža Vašingtona bb, 81000 Podgorica, MONTENEGROThis paper studies the influence of process parameters: temperature, the weight of the added precipitant agent, pH and reducing agent on the kinetics of the process of reduction and precipitation of gold of 98.44% purity obtained in the process of electrical and electronic waste recycling. The optimal conditions of reduction and precipitation of colloidal gold particles in the process of recycling of different waste types in order to obtain high-purity gold are the following: an optimal process time (τ = 11minutes), temperature (t=5°C), the weight of the added precipitant (m = 6g of pure gold) and K2S2O5 as the preferred reducing agent. The results have contributed to a better understanding of the reduction and precipitation rate of colloidal gold particles in order to manage and control this process. The granulometric analysis confirms the existence of colloidal gold particles. SEM analysis indicates spherical particles and good homogeneity of the sample. XRF analysis shows that gold obtained in dis process of recycling is highly pure (99.99%).http://www.ijcce.ac.ir/article_30143_42300d51d8c6fd507bd7a8e6da98d226.pdfcolloidal gold particlesthe reduction and precipitation raterecyclingwaste |
| spellingShingle | Ivana Boskovic Veselinka Grudic Mileta Ivanovic Ivana Milasevic Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste Recycling Iranian Journal of Chemistry & Chemical Engineering colloidal gold particles the reduction and precipitation rate recycling waste |
| title | Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste Recycling |
| title_full | Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste Recycling |
| title_fullStr | Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste Recycling |
| title_full_unstemmed | Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste Recycling |
| title_short | Investigation of Reduction and Precipitation Rate of Colloidal Gold Particles Obtained in the Process of Electrical and Electronic Waste Recycling |
| title_sort | investigation of reduction and precipitation rate of colloidal gold particles obtained in the process of electrical and electronic waste recycling |
| topic | colloidal gold particles the reduction and precipitation rate recycling waste |
| url | http://www.ijcce.ac.ir/article_30143_42300d51d8c6fd507bd7a8e6da98d226.pdf |
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