Screening and performance optimization of fungi for heavy metal adsorption in electrolytes
The resource recovery and reuse of precious metal-laden wastewater is widely recognized as crucial for sustainable development. Superalloy electrolytes, produced through the electrolysis of superalloy scrap, contain significant quantities of precious metal ions, thereby possessing substantial potent...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-03-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1371877/full |
| _version_ | 1797246717470441472 |
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| author | Yuhui Yang Yuhui Yang Rui Liu Yizhou Zhou Yingnan Tang Jing Zhang Yu Wang Yu Wang Tingting Dai Tingting Dai Ping Zou Xiaoyi Bi Shuibing Li |
| author_facet | Yuhui Yang Yuhui Yang Rui Liu Yizhou Zhou Yingnan Tang Jing Zhang Yu Wang Yu Wang Tingting Dai Tingting Dai Ping Zou Xiaoyi Bi Shuibing Li |
| author_sort | Yuhui Yang |
| collection | DOAJ |
| description | The resource recovery and reuse of precious metal-laden wastewater is widely recognized as crucial for sustainable development. Superalloy electrolytes, produced through the electrolysis of superalloy scrap, contain significant quantities of precious metal ions, thereby possessing substantial potential for recovery value. This study first explores the feasibility of utilizing fungi to treat Superalloy electrolytes. Five fungi resistant to high concentrations of heavy metals in electrolytes (mainly containing Co, Cr, Mo, Re, and Ni) were screened from the soil of a mining area to evaluate their adsorption characteristics. All five fungi were identified by ITS sequencing, and among them, Paecilomyces lilacinus showed the best adsorption performance for the five heavy metals; therefore, we conducted further research on its adsorption characteristics. The best adsorption effect of Co, Cr, Mo, Re, and Ni was 37.09, 64.41, 47.87, 41.59, and 25.38%, respectively, under the conditions of pH 5, time 1 h, dosage 26.67 g/L, temperature 25–30°C, and an initial metal concentration that was diluted fivefold in the electrolyte. The biosorption of Co, Mo, Re, and Ni was better matched by the Langmuir model than by the Freundlich model, while Cr displayed the opposite pattern, showing that the adsorption process of P. lilacinus for the five heavy metals is not a single adsorption mechanism, but may involve a multi-step adsorption process. The kinetics study showed that the quasi-second-order model fitted better than the quasi-first-order model, indicating that chemical adsorption was the main adsorption process of the five heavy metals in P. lilacinus. Fourier transform infrared spectroscopy revealed that the relevant active groups, i.e., hydroxyl (-OH), amino (-NH2), amide (- CONH2), carbonyl (-C = O), carboxyl (-COOH), and phosphate (PO43–), participated in the adsorption process. This study emphasized the potential application of P. lilacinus in the treatment of industrial wastewater with extremely complex background values. |
| first_indexed | 2024-04-24T19:47:14Z |
| format | Article |
| id | doaj.art-4b7f5b8bb69a4219b0b54a34d399a6eb |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-24T19:47:14Z |
| publishDate | 2024-03-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Microbiology |
| spelling | doaj.art-4b7f5b8bb69a4219b0b54a34d399a6eb2024-03-25T04:59:19ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2024-03-011510.3389/fmicb.2024.13718771371877Screening and performance optimization of fungi for heavy metal adsorption in electrolytesYuhui Yang0Yuhui Yang1Rui Liu2Yizhou Zhou3Yingnan Tang4Jing Zhang5Yu Wang6Yu Wang7Tingting Dai8Tingting Dai9Ping Zou10Xiaoyi Bi11Shuibing Li12Institute of International Rivers and Eco-Security, Yunnan University, Kunming, ChinaSchool of Ecology and Environmental Science, Institute for Ecological Research and Pollution Control of Plateau Lakes, Yunnan University, Kunming, ChinaSchool of Ecology and Environmental Science, Institute for Ecological Research and Pollution Control of Plateau Lakes, Yunnan University, Kunming, ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang, ChinaKey Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaInternational School of Shenyang Jianzhu University, Shenyang, ChinaInstitute of International Rivers and Eco-Security, Yunnan University, Kunming, ChinaSchool of Ecology and Environmental Science, Institute for Ecological Research and Pollution Control of Plateau Lakes, Yunnan University, Kunming, ChinaInstitute of International Rivers and Eco-Security, Yunnan University, Kunming, ChinaSchool of Ecology and Environmental Science, Institute for Ecological Research and Pollution Control of Plateau Lakes, Yunnan University, Kunming, ChinaSchool of Ecology and Environmental Science, Institute for Ecological Research and Pollution Control of Plateau Lakes, Yunnan University, Kunming, ChinaSchool of Ecology and Environmental Science, Institute for Ecological Research and Pollution Control of Plateau Lakes, Yunnan University, Kunming, ChinaSchool of Ecology and Environmental Science, Institute for Ecological Research and Pollution Control of Plateau Lakes, Yunnan University, Kunming, ChinaThe resource recovery and reuse of precious metal-laden wastewater is widely recognized as crucial for sustainable development. Superalloy electrolytes, produced through the electrolysis of superalloy scrap, contain significant quantities of precious metal ions, thereby possessing substantial potential for recovery value. This study first explores the feasibility of utilizing fungi to treat Superalloy electrolytes. Five fungi resistant to high concentrations of heavy metals in electrolytes (mainly containing Co, Cr, Mo, Re, and Ni) were screened from the soil of a mining area to evaluate their adsorption characteristics. All five fungi were identified by ITS sequencing, and among them, Paecilomyces lilacinus showed the best adsorption performance for the five heavy metals; therefore, we conducted further research on its adsorption characteristics. The best adsorption effect of Co, Cr, Mo, Re, and Ni was 37.09, 64.41, 47.87, 41.59, and 25.38%, respectively, under the conditions of pH 5, time 1 h, dosage 26.67 g/L, temperature 25–30°C, and an initial metal concentration that was diluted fivefold in the electrolyte. The biosorption of Co, Mo, Re, and Ni was better matched by the Langmuir model than by the Freundlich model, while Cr displayed the opposite pattern, showing that the adsorption process of P. lilacinus for the five heavy metals is not a single adsorption mechanism, but may involve a multi-step adsorption process. The kinetics study showed that the quasi-second-order model fitted better than the quasi-first-order model, indicating that chemical adsorption was the main adsorption process of the five heavy metals in P. lilacinus. Fourier transform infrared spectroscopy revealed that the relevant active groups, i.e., hydroxyl (-OH), amino (-NH2), amide (- CONH2), carbonyl (-C = O), carboxyl (-COOH), and phosphate (PO43–), participated in the adsorption process. This study emphasized the potential application of P. lilacinus in the treatment of industrial wastewater with extremely complex background values.https://www.frontiersin.org/articles/10.3389/fmicb.2024.1371877/fullbiosorptionindustrial wastewater treatmentPaecilomyces lilacinusprecious metals recoverysuperalloy electrolytes |
| spellingShingle | Yuhui Yang Yuhui Yang Rui Liu Yizhou Zhou Yingnan Tang Jing Zhang Yu Wang Yu Wang Tingting Dai Tingting Dai Ping Zou Xiaoyi Bi Shuibing Li Screening and performance optimization of fungi for heavy metal adsorption in electrolytes Frontiers in Microbiology biosorption industrial wastewater treatment Paecilomyces lilacinus precious metals recovery superalloy electrolytes |
| title | Screening and performance optimization of fungi for heavy metal adsorption in electrolytes |
| title_full | Screening and performance optimization of fungi for heavy metal adsorption in electrolytes |
| title_fullStr | Screening and performance optimization of fungi for heavy metal adsorption in electrolytes |
| title_full_unstemmed | Screening and performance optimization of fungi for heavy metal adsorption in electrolytes |
| title_short | Screening and performance optimization of fungi for heavy metal adsorption in electrolytes |
| title_sort | screening and performance optimization of fungi for heavy metal adsorption in electrolytes |
| topic | biosorption industrial wastewater treatment Paecilomyces lilacinus precious metals recovery superalloy electrolytes |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1371877/full |
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