BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLES
ABSTRACT. The waste electrical and electronic equipment (WEEE) is an important secondary source for renewable extraction of valuable metals and raw materials. The mineral biotechnologies are promising alternative to the current industrial chemical technologies for waste treatment, which are often a...
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| Format: | Article |
| Language: | English |
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University of Mining and Geology “St. Ivan Rilski”
2021-11-01
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| Series: | Sustainable Extraction and Processing of Raw Materials Journal |
| Subjects: | |
| Online Access: | https://seprm.com/wp-content/uploads/2021/11/Toshev.pdf |
| _version_ | 1811217989176918016 |
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| author | Svetlin Toshev Alexandre Loukanov Saim Emin Seiichiro Nakabayashi |
| author_facet | Svetlin Toshev Alexandre Loukanov Saim Emin Seiichiro Nakabayashi |
| author_sort | Svetlin Toshev |
| collection | DOAJ |
| description | ABSTRACT. The waste electrical and electronic equipment (WEEE) is an important secondary source for renewable extraction of valuable metals and raw materials.
The mineral biotechnologies are promising alternative to the current industrial chemical technologies for waste treatment, which are often accompanied with negative environmental impact. Here we report a systematic biotechnological strategy for recycling, recovering and extraction of metals from WEEE as biogenic formed nanoparticles. The process is based on two general steps – bioleaching (through autotrophic/heterotrophic bacteria), and extraction from the effluent as biosynthesised nanoscale materials. The obtained analytical data revealed that copper was bioleached in the form of nanoparticles, the efficiency being more than 90 %, which was the highest achieved value in comparison with the other metals. The recovered content of gold was less than 50 %, but the efforts for improvement of microbial leaching efficiency of Au are still in progress. The reported eco–friendly biotechnological approach enables proper implementation of new resource recovery–oriented recycling strategies with reduced risk of negative impact on nature.
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| first_indexed | 2024-04-12T07:02:31Z |
| format | Article |
| id | doaj.art-44be34098d6e4098a6fbf4252b0bf945 |
| institution | Directory Open Access Journal |
| issn | 2738-7100 2738-7151 |
| language | English |
| last_indexed | 2024-04-12T07:02:31Z |
| publishDate | 2021-11-01 |
| publisher | University of Mining and Geology “St. Ivan Rilski” |
| record_format | Article |
| series | Sustainable Extraction and Processing of Raw Materials Journal |
| spelling | doaj.art-44be34098d6e4098a6fbf4252b0bf9452022-12-22T03:42:58ZengUniversity of Mining and Geology “St. Ivan Rilski”Sustainable Extraction and Processing of Raw Materials Journal2738-71002738-71512021-11-0122687310.5281/zenodo.5594998BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLESSvetlin Toshev0Alexandre Loukanov1Saim Emin2Seiichiro Nakabayashi3University of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, BulgariaDepartment of Eng. Geoecology, University of Mining and Geology “St. Ivan Rilski” – Sofia, Bulgaria, Department of Chemistry and Materials Science, National Institute of Technology, Gunma College, 580 Toriba, Maebashi, Gunma 371-8530 JapanMaterials Research Laboratory, University of Nova Gorica, SloveniaGraduate School of Science and Engineering, Saitama University, Saitama, JapanABSTRACT. The waste electrical and electronic equipment (WEEE) is an important secondary source for renewable extraction of valuable metals and raw materials. The mineral biotechnologies are promising alternative to the current industrial chemical technologies for waste treatment, which are often accompanied with negative environmental impact. Here we report a systematic biotechnological strategy for recycling, recovering and extraction of metals from WEEE as biogenic formed nanoparticles. The process is based on two general steps – bioleaching (through autotrophic/heterotrophic bacteria), and extraction from the effluent as biosynthesised nanoscale materials. The obtained analytical data revealed that copper was bioleached in the form of nanoparticles, the efficiency being more than 90 %, which was the highest achieved value in comparison with the other metals. The recovered content of gold was less than 50 %, but the efforts for improvement of microbial leaching efficiency of Au are still in progress. The reported eco–friendly biotechnological approach enables proper implementation of new resource recovery–oriented recycling strategies with reduced risk of negative impact on nature. https://seprm.com/wp-content/uploads/2021/11/Toshev.pdfbiotechnological recyclingsecondary raw materials |
| spellingShingle | Svetlin Toshev Alexandre Loukanov Saim Emin Seiichiro Nakabayashi BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLES Sustainable Extraction and Processing of Raw Materials Journal biotechnological recycling secondary raw materials |
| title | BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLES |
| title_full | BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLES |
| title_fullStr | BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLES |
| title_full_unstemmed | BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLES |
| title_short | BIOTECHNOLOGICAL RECYCLING AND RECOVERY OF METALS FROM SECONDARY RAW MATERIALS THROUGH BIOGENIC SYNTHESIS OF NANOPARTICLES |
| title_sort | biotechnological recycling and recovery of metals from secondary raw materials through biogenic synthesis of nanoparticles |
| topic | biotechnological recycling secondary raw materials |
| url | https://seprm.com/wp-content/uploads/2021/11/Toshev.pdf |
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