Academic Journal
Enhanced passivation of thallium, vanadium and arsenic in contaminated soils: critical role of Fe–Mn-biochar
| العنوان: | Enhanced passivation of thallium, vanadium and arsenic in contaminated soils: critical role of Fe–Mn-biochar |
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| المؤلفون: | Pengyuan Deng, Wenhuan Yuan, Jin Wang, Liangzhong Li, Yuchen Zhou, Jingzi Beiyuan, Haofan Xu, Shunlong Jiang, Zicong Tan, Yurong Gao, Diyun Chen, Juan Liu |
| المصدر: | Biochar, Vol 6, Iss 1, Pp 1-13 (2024) |
| بيانات النشر: | Springer, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Environmental sciences LCC:Agriculture |
| مصطلحات موضوعية: | Modified biochar, Toxic metal, Environmental risk, Soil amendment, Environmental sciences, GE1-350, Agriculture |
| الوصف: | Abstract Thallium (Tl), vanadium (V) and arsenic (As) are considered as typical toxic elements of increased interest. Their accumulation in soils can pose a substantial health threat to human beings. In this study, Fe–Mn modified biochar (FMBC) was chemically constructed to immobilize Tl, V and As in contaminated soils. The results showed that compared with pristine biochar (BC), FMBC can achieve significantly higher passivation effects for the studied contaminated soils, which reduced the bioavailable Tl, V and As contents by 83.9%, 71.09% and 71.92%, respectively. The passivation of Tl, As, and V via FMBC application was partially attributed to a notable increase in pH, which enhances the availability of adsorptive sites. Further, the newly formed minerals, including cancrinite, gibbsite and Fe–Mn (hydr)oxides, serve as additional adsorbents, substantially reducing the mobility of Tl, V and As. Additionally, the oxidation of Tl(I) to Tl(III) by the Fe–Mn (hydr)oxide of FMBC significantly enhanced Tl immobilization, consequently diminishing its bioavailability. The findings suggest that significant environmental threats could be alleviated through the potential application of FMBC in treating Tl-As-V dominated contamination in soils, providing a new perspective for the sustainable utilization of industrially polluted soils. Graphical Abstract |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2524-7867 |
| Relation: | https://doaj.org/toc/2524-7867 |
| DOI: | 10.1007/s42773-024-00344-z |
| URL الوصول: | https://doaj.org/article/89b659da70994eac8ef9f230109b1485 |
| رقم الانضمام: | edsdoj.89b659da70994eac8ef9f230109b1485 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 25247867 |
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| DOI: | 10.1007/s42773-024-00344-z |