Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractant
Abstract Extractant-impregnated resins have potential for recovering platinum group metals selectively and efficiently. Herein, 1,3-bis(2-(octylthio)propan-2-yl)benzene (1), a pincer-type extractant, was impregnated in Amberlite XAD-7 resin (1-EIR), and the batch Pd(II) sorption conditions, includin...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-020-79614-2 |
| _version_ | 1818690110359601152 |
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| author | Manabu Yamada Shun Kimura Muniyappan Rajiv Gandhi Atsushi Shibayama |
| author_facet | Manabu Yamada Shun Kimura Muniyappan Rajiv Gandhi Atsushi Shibayama |
| author_sort | Manabu Yamada |
| collection | DOAJ |
| description | Abstract Extractant-impregnated resins have potential for recovering platinum group metals selectively and efficiently. Herein, 1,3-bis(2-(octylthio)propan-2-yl)benzene (1), a pincer-type extractant, was impregnated in Amberlite XAD-7 resin (1-EIR), and the batch Pd(II) sorption conditions, including impregnated amount, shaking time, Pd(II) concentration, HCl concentration, and Pd(II) desorption reagents, were optimized. The maximum Pd(II) sorption capacity of 1-EIR was 49 mg g−1 after 24 h in a 700 ppm Pd(II) solution. Over 20 adsorption–desorption cycles, 1-EIR showed good reusability, with a sorption percentage (S%) of > 92%. However, not all Pd(II) was desorbed from 1-EIR. Complete Pd(II) collection was achieved by combining desorption with flaking of the Pd–extractant complex from Pd(II)-loaded 1-EIR by Soxhlet extraction, as ~ 13 mg g−1 remained after the 20th adsorption–desorption cycle by absorptiometric method. The sorption mechanism was elucidated based on the Langmuir isotherm model, thermodynamic parameters, and sorption kinetics. Pd(II) sorption by 1-EIR was spontaneous and endothermic, and the sorption kinetics followed a pseudo-second-order model. Notably, 1-EIR also exhibited high selectivity for Pd(II) from a simulated mixed metal solution and a spent automotive catalyst leachate (S% = 98% and > 99%, respectively). Thus, this extractant-impregnated system is promising for selective Pd(II) recovery from spent automotive catalysts and other secondary resources. |
| first_indexed | 2024-12-17T12:20:47Z |
| format | Article |
| id | doaj.art-79c63ab5f5004e1e8f07a0d39ee75722 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-17T12:20:47Z |
| publishDate | 2021-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-79c63ab5f5004e1e8f07a0d39ee757222022-12-21T21:48:58ZengNature PortfolioScientific Reports2045-23222021-01-0111111110.1038/s41598-020-79614-2Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractantManabu Yamada0Shun Kimura1Muniyappan Rajiv Gandhi2Atsushi Shibayama3Research Center of Advanced Materials for Breakthrough Technology, Graduate School of Engineering Science, Akita UniversityApplied Chemistry Course, Department of Materials Science, Graduate School of Engineering Science, Akita UniversityQuality Control Department, Panipat Refinery and Petrochemical Complex, Indian Oil Corporation LimitedGraduate School of International Resources Science, Akita UniversityAbstract Extractant-impregnated resins have potential for recovering platinum group metals selectively and efficiently. Herein, 1,3-bis(2-(octylthio)propan-2-yl)benzene (1), a pincer-type extractant, was impregnated in Amberlite XAD-7 resin (1-EIR), and the batch Pd(II) sorption conditions, including impregnated amount, shaking time, Pd(II) concentration, HCl concentration, and Pd(II) desorption reagents, were optimized. The maximum Pd(II) sorption capacity of 1-EIR was 49 mg g−1 after 24 h in a 700 ppm Pd(II) solution. Over 20 adsorption–desorption cycles, 1-EIR showed good reusability, with a sorption percentage (S%) of > 92%. However, not all Pd(II) was desorbed from 1-EIR. Complete Pd(II) collection was achieved by combining desorption with flaking of the Pd–extractant complex from Pd(II)-loaded 1-EIR by Soxhlet extraction, as ~ 13 mg g−1 remained after the 20th adsorption–desorption cycle by absorptiometric method. The sorption mechanism was elucidated based on the Langmuir isotherm model, thermodynamic parameters, and sorption kinetics. Pd(II) sorption by 1-EIR was spontaneous and endothermic, and the sorption kinetics followed a pseudo-second-order model. Notably, 1-EIR also exhibited high selectivity for Pd(II) from a simulated mixed metal solution and a spent automotive catalyst leachate (S% = 98% and > 99%, respectively). Thus, this extractant-impregnated system is promising for selective Pd(II) recovery from spent automotive catalysts and other secondary resources.https://doi.org/10.1038/s41598-020-79614-2 |
| spellingShingle | Manabu Yamada Shun Kimura Muniyappan Rajiv Gandhi Atsushi Shibayama Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractant Scientific Reports |
| title | Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractant |
| title_full | Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractant |
| title_fullStr | Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractant |
| title_full_unstemmed | Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractant |
| title_short | Environmentally friendly Pd(II) recovery from spent automotive catalysts using resins impregnated with a pincer-type extractant |
| title_sort | environmentally friendly pd ii recovery from spent automotive catalysts using resins impregnated with a pincer type extractant |
| url | https://doi.org/10.1038/s41598-020-79614-2 |
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