Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems
Toxicity and pollution of heavy metals in water environments are very serious threats, and how to efficiently remove heavy metals is a difficult problem in water ecosystems. This study takes Cr and Pb as examples to study the adsorption effects of different types of modified biochar on these two hea...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Multidisciplinary Digital Publishing Institute (MDPI)
2025
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| Online Access: | https://umpir.ump.edu.my/id/eprint/45613/ |
| _version_ | 1848827465891315712 |
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| author | Zhang, Yazhai Xia, Zhilei Aainaa Izyan, Nafsun Feng, Weiying |
| author_facet | Zhang, Yazhai Xia, Zhilei Aainaa Izyan, Nafsun Feng, Weiying |
| author_sort | Zhang, Yazhai |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Toxicity and pollution of heavy metals in water environments are very serious threats, and how to efficiently remove heavy metals is a difficult problem in water ecosystems. This study takes Cr and Pb as examples to study the adsorption effects of different types of modified biochar on these two heavy metals and their influencing mechanisms, with the aim of providing precise treatment schemes for water ecological health. Biochar was prepared from apricot branches, apricot shells, and corn stalks through nitrogen doping modification, and its structure and properties were characterized and analyzed. Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were employed to investigate the microstructure and surface chemical characteristics of the biochar. Adsorption experiments were conducted to evaluate its removal efficiency for Cr6+ and Pb2+ from aqueous solutions. The results showed that nitrogen-doped biochar prepared from corn stalks at 600 °C exhibited the highest Cr6+ adsorption rate of 81.09%, while the biochar prepared at 500 °C demonstrated the highest Pb2+ adsorption rate of 91.61%. Comparative analysis of FTIR and SEM data between nitrogen-doped biochar and its original counterparts revealed the underlying adsorption mechanisms, which involve a synergistic effect of coordination interaction, electrostatic attraction, and chemical reduction. This study highlights nitrogen-doped biochar as an efficient and cost-effective material for the removal of heavy metal ions from aqueous environments. It also provides theoretical and practical insights into the resource utilization of agricultural waste and the management of water pollution. |
| first_indexed | 2025-11-15T04:01:09Z |
| format | Article |
| id | ump-45613 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T04:01:09Z |
| publishDate | 2025 |
| publisher | Multidisciplinary Digital Publishing Institute (MDPI) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-456132025-09-11T01:47:15Z https://umpir.ump.edu.my/id/eprint/45613/ Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems Zhang, Yazhai Xia, Zhilei Aainaa Izyan, Nafsun Feng, Weiying TP Chemical technology Toxicity and pollution of heavy metals in water environments are very serious threats, and how to efficiently remove heavy metals is a difficult problem in water ecosystems. This study takes Cr and Pb as examples to study the adsorption effects of different types of modified biochar on these two heavy metals and their influencing mechanisms, with the aim of providing precise treatment schemes for water ecological health. Biochar was prepared from apricot branches, apricot shells, and corn stalks through nitrogen doping modification, and its structure and properties were characterized and analyzed. Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were employed to investigate the microstructure and surface chemical characteristics of the biochar. Adsorption experiments were conducted to evaluate its removal efficiency for Cr6+ and Pb2+ from aqueous solutions. The results showed that nitrogen-doped biochar prepared from corn stalks at 600 °C exhibited the highest Cr6+ adsorption rate of 81.09%, while the biochar prepared at 500 °C demonstrated the highest Pb2+ adsorption rate of 91.61%. Comparative analysis of FTIR and SEM data between nitrogen-doped biochar and its original counterparts revealed the underlying adsorption mechanisms, which involve a synergistic effect of coordination interaction, electrostatic attraction, and chemical reduction. This study highlights nitrogen-doped biochar as an efficient and cost-effective material for the removal of heavy metal ions from aqueous environments. It also provides theoretical and practical insights into the resource utilization of agricultural waste and the management of water pollution. Multidisciplinary Digital Publishing Institute (MDPI) 2025 Article PeerReviewed pdf en cc_by_4 https://umpir.ump.edu.my/id/eprint/45613/1/Preparation%20of%20nitrogen-doped%20biochar%20and%20its%20adsorption%20performance.pdf Zhang, Yazhai and Xia, Zhilei and Aainaa Izyan, Nafsun and Feng, Weiying (2025) Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems. Toxics, 13 (5). pp. 1-18. ISSN 2305-6304. (Published) https://doi.org/10.3390/toxics13050402 https://doi.org/10.3390/toxics13050402 https://doi.org/10.3390/toxics13050402 |
| spellingShingle | TP Chemical technology Zhang, Yazhai Xia, Zhilei Aainaa Izyan, Nafsun Feng, Weiying Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems |
| title | Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems |
| title_full | Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems |
| title_fullStr | Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems |
| title_full_unstemmed | Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems |
| title_short | Preparation of nitrogen-doped biochar and its adsorption performance for Cr6+ and Pb2+ in aqueous systems |
| title_sort | preparation of nitrogen-doped biochar and its adsorption performance for cr6+ and pb2+ in aqueous systems |
| topic | TP Chemical technology |
| url | https://umpir.ump.edu.my/id/eprint/45613/ https://umpir.ump.edu.my/id/eprint/45613/ https://umpir.ump.edu.my/id/eprint/45613/ |