Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acids
The dissolution of MnO2 from tantalum capacitor scrap using organic acids in various process conditions was studied. The initial materials were of two types: LTC (leaded tantalum capacitors) and SMDTC (surface-mounted device tantalum capacitors). The research materials were prepared by pyrolysis, g...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Research and Innovation Centre Pro-Akademia
2019-07-01
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| Series: | Acta Innovations |
| Subjects: | |
| Online Access: | http://www.proakademia.eu/gfx/baza_wiedzy/529/nr_32_63-77_2.pdf |
| _version_ | 1818082076978577408 |
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| author | Andrzej Piotrowicz Stanisław Pietrzyk |
| author_facet | Andrzej Piotrowicz Stanisław Pietrzyk |
| author_sort | Andrzej Piotrowicz |
| collection | DOAJ |
| description | The dissolution of MnO2 from tantalum capacitor scrap using organic acids in various process conditions was
studied. The initial materials were of two types: LTC (leaded tantalum capacitors) and SMDTC (surface-mounted device tantalum capacitors). The research materials were prepared by pyrolysis, grinding and sieving and the preparation processes were characterized. Dissolution of MnO2 was carried out with the use of sulfuric acid solutions with the addition of acetic, ascorbic, citric and oxalic organic acids. Results show that the addition of organic acids significantly improves dissolution yields (72-94 vs 90-99 % for H2SO4 and acid mixtures, respectively). In practice, a concentration of organic acid above 1 M results in the complete removal of MnO2 |
| first_indexed | 2024-12-10T19:16:21Z |
| format | Article |
| id | doaj.art-1de2cba95fee4022b5fdf2c6a1b3dbc1 |
| institution | Directory Open Access Journal |
| issn | 2300-5599 |
| language | English |
| last_indexed | 2024-12-10T19:16:21Z |
| publishDate | 2019-07-01 |
| publisher | Research and Innovation Centre Pro-Akademia |
| record_format | Article |
| series | Acta Innovations |
| spelling | doaj.art-1de2cba95fee4022b5fdf2c6a1b3dbc12022-12-22T01:36:35ZengResearch and Innovation Centre Pro-AkademiaActa Innovations2300-55992019-07-01332637710.32933/ActaInnovations.32.7Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acidsAndrzej Piotrowicz0Stanisław Pietrzyk1AGH University of Science and TechnologyAGH University of Science and TechnologyThe dissolution of MnO2 from tantalum capacitor scrap using organic acids in various process conditions was studied. The initial materials were of two types: LTC (leaded tantalum capacitors) and SMDTC (surface-mounted device tantalum capacitors). The research materials were prepared by pyrolysis, grinding and sieving and the preparation processes were characterized. Dissolution of MnO2 was carried out with the use of sulfuric acid solutions with the addition of acetic, ascorbic, citric and oxalic organic acids. Results show that the addition of organic acids significantly improves dissolution yields (72-94 vs 90-99 % for H2SO4 and acid mixtures, respectively). In practice, a concentration of organic acid above 1 M results in the complete removal of MnO2http://www.proakademia.eu/gfx/baza_wiedzy/529/nr_32_63-77_2.pdftantalum capacitorstantalum recyclingeco-friendly recyclingtransition metals recovery |
| spellingShingle | Andrzej Piotrowicz Stanisław Pietrzyk Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acids Acta Innovations tantalum capacitors tantalum recycling eco-friendly recycling transition metals recovery |
| title | Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acids |
| title_full | Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acids |
| title_fullStr | Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acids |
| title_full_unstemmed | Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acids |
| title_short | Dissolution of manganese (IV) oxide from tantalum capacitor scrap by organic acids |
| title_sort | dissolution of manganese iv oxide from tantalum capacitor scrap by organic acids |
| topic | tantalum capacitors tantalum recycling eco-friendly recycling transition metals recovery |
| url | http://www.proakademia.eu/gfx/baza_wiedzy/529/nr_32_63-77_2.pdf |
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