BISMUTH TELLURID WASTE PROCESSING
The main stages of bismuth telluride processing comprising sintering with NaOH, leaching and precipitation were investigated. Bi2Te3 samples produced by "ADV Engineering" were used as starting compounds. The studies revealed regularities of tellurium behavior during the sintering of Bi2Te3...
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| Format: | Article |
| Language: | Russian |
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MIREA - Russian Technological University
2017-02-01
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| Series: | Тонкие химические технологии |
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| Online Access: | https://www.finechem-mirea.ru/jour/article/view/71 |
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| author | M. V. Tsygankova E. A. Perminova M. T. Chukmanova O. A. Raikina |
| author_facet | M. V. Tsygankova E. A. Perminova M. T. Chukmanova O. A. Raikina |
| author_sort | M. V. Tsygankova |
| collection | DOAJ |
| description | The main stages of bismuth telluride processing comprising sintering with NaOH, leaching and precipitation were investigated. Bi2Te3 samples produced by "ADV Engineering" were used as starting compounds. The studies revealed regularities of tellurium behavior during the sintering of Bi2Te3 with NaOH and the resulting the solid residue leaching. It was noted that annealing at 350-450°C with NaOH transforms tellurium into Na2TeO3, which is an appropriate form for further dissolution and separation from bismuth. Increasing temperature results in Na2TeO3 oxidation and formation of the water-insoluble compound Na2TeO4. Thus, it decreases tellurium extraction degree during the leaching. It has been shown that increasing temperature from 8 to 25°C at the step of tellurium hydrolytic precipitation slightly affects the extraction degree, the value of which is 93.5-98.2%. |
| format | Article |
| id | doaj-art-ea09fb4391524e69ba82b79d591340bf |
| institution | DOAJ |
| issn | 2410-6593 2686-7575 |
| language | Russian |
| publishDate | 2017-02-01 |
| publisher | MIREA - Russian Technological University |
| record_format | Article |
| series | Тонкие химические технологии |
| spelling | doaj-art-ea09fb4391524e69ba82b79d591340bf2025-08-20T02:59:59ZrusMIREA - Russian Technological UniversityТонкие химические технологии2410-65932686-75752017-02-01121394410.32362/2410-6593-2017-12-1-39-4471BISMUTH TELLURID WASTE PROCESSINGM. V. Tsygankova0E. A. Perminova1M. T. Chukmanova2O. A. Raikina3Moscow Technological University (Institute of Fine Chemical Technologies)International Research Centre of Protection of Human Health, Animals and the EnvironmentKazakh-British Technical University, AlmatyMoscow Technological University (Institute of Fine Chemical Technologies)The main stages of bismuth telluride processing comprising sintering with NaOH, leaching and precipitation were investigated. Bi2Te3 samples produced by "ADV Engineering" were used as starting compounds. The studies revealed regularities of tellurium behavior during the sintering of Bi2Te3 with NaOH and the resulting the solid residue leaching. It was noted that annealing at 350-450°C with NaOH transforms tellurium into Na2TeO3, which is an appropriate form for further dissolution and separation from bismuth. Increasing temperature results in Na2TeO3 oxidation and formation of the water-insoluble compound Na2TeO4. Thus, it decreases tellurium extraction degree during the leaching. It has been shown that increasing temperature from 8 to 25°C at the step of tellurium hydrolytic precipitation slightly affects the extraction degree, the value of which is 93.5-98.2%.https://www.finechem-mirea.ru/jour/article/view/71bismuth tellurideannealingleachingrecovery rateprecipitationrecycling |
| spellingShingle | M. V. Tsygankova E. A. Perminova M. T. Chukmanova O. A. Raikina BISMUTH TELLURID WASTE PROCESSING Тонкие химические технологии bismuth telluride annealing leaching recovery rate precipitation recycling |
| title | BISMUTH TELLURID WASTE PROCESSING |
| title_full | BISMUTH TELLURID WASTE PROCESSING |
| title_fullStr | BISMUTH TELLURID WASTE PROCESSING |
| title_full_unstemmed | BISMUTH TELLURID WASTE PROCESSING |
| title_short | BISMUTH TELLURID WASTE PROCESSING |
| title_sort | bismuth tellurid waste processing |
| topic | bismuth telluride annealing leaching recovery rate precipitation recycling |
| url | https://www.finechem-mirea.ru/jour/article/view/71 |
| work_keys_str_mv | AT mvtsygankova bismuthtelluridwasteprocessing AT eaperminova bismuthtelluridwasteprocessing AT mtchukmanova bismuthtelluridwasteprocessing AT oaraikina bismuthtelluridwasteprocessing |