| 王薇,寇天乐,辛世纪,周建勤,贾宏涛,唐光木.Ce-Al改性生物炭对地下水As、F的同步去除[J].农业环境科学学报,2026,45(7):1812-1824. |
| Ce-Al改性生物炭对地下水As、F的同步去除 |
| Simultaneous removal of As and F from groundwater by Ce-Al modified biochar |
| 投稿时间：2025-07-04 |
| DOI：10.11654/jaes.2025-0649 |
| 中文关键词: 生物炭 金属改性 As F 吸附机制 |
| 英文关键词: biochar metal modification As F adsorption mechan |
| 基金项目:新疆维吾尔自治区重点研发计划项目（2022B02013-3）；新疆维吾尔自治区“三农”骨干培养项目（2023SNGGGCC002）；新疆维吾尔自治区重点研发计划项目（2022B02017-1） |
| 作者 | 单位 | E-mail | | 王薇 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052
新疆农业大学生物炭工程技术研究中心, 乌鲁木齐 830052 | | | 寇天乐 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052
新疆农业大学生物炭工程技术研究中心, 乌鲁木齐 830052 | | | 辛世纪 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052
新疆农业大学生物炭工程技术研究中心, 乌鲁木齐 830052 | | | 周建勤 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052
新疆农业大学生物炭工程技术研究中心, 乌鲁木齐 830052
新疆土壤与植物生态过程重点实验室, 乌鲁木齐 830052 | machine1229@163.com | | 贾宏涛 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052
新疆农业大学生物炭工程技术研究中心, 乌鲁木齐 830052
新疆土壤与植物生态过程重点实验室, 乌鲁木齐 830052 | | | 唐光木 | 新疆维吾尔自治区农业科学院农业资源与环境研究所, 乌鲁木齐 830091 | |
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| 中文摘要: |
| 为探究铈铝双金属改性葡萄藤生物炭对地下水中As、F的同步去除能力，深入理解其结构特征和吸附机制，本研究以葡萄藤秸秆为原料，通过负载金属制备得到生物炭基复合材料，在初始浓度、吸附时间、pH值、共存离子等影响因素下，探索其对吸附效果的影响，并结合扫描电镜（SEM）、能谱分析（Mapping）、比表面积仪（BET）、红外光谱（FTIR）、X射线（XPS、XRD）等技术对材料进行表征分析。结果表明：双金属铈铝改性生物炭（CABC）能在6 h内快速吸附水中As、F离子，当初始As浓度和F浓度分别为1mg·L-1和5 mg·L-1时，炭投加量为1 g·L-1时，As、F的最大吸附量分别为30.61、53.98 mg·g-1，其吸附过程符合Langmuir等温吸附模型和拟二级动力学模型的特征。零电荷点为7.9，最优吸附pH为3~4。CABC对As的吸附主要为静电引力作用和表面络合作用，对F的吸附主要为静电引力、离子交换和表面络合作用。研究表明，改性后的CABC是一种As、F复合污染水体的优质吸附材料。 |
| 英文摘要: |
| By exploring the synchronous removal capacity of cerium-aluminum bimetallic modified grapevine biochar for As and F in groundwater, this study aims to deeply understand its structural characteristics and adsorption mechanism. In this research, biochar-based composite materials were prepared by loading metals using grapevine straw as the raw material. The effects of initial concentration, adsorption time, pH value, and coexisting ions on the adsorption performance were investigated. The materials were characterized by scanning electron microscopy（SEM）, energy dispersive spectroscopy（Mapping）, specific surface area analyzer（BET）, infrared spectroscopy（FTIR）, X-ray spectroscopy（XPS, XRD）. The results showed that the bimetallic cerium-aluminum modified biochar（CABC） could rapidly adsorb As and F ions in water within 6 hours. When the initial concentrations of As and F were 1 mg·L-1 and 5 mg·L-1, respectively, and the dosage of biochar was 1 g·L-1, the maximum adsorption capacities of As and F were 30.61 mg·g-1 and 53.98 mg·g-1, respectively, which conformed to the characteristics of the Langmuir isothermal adsorption model and the pseudo-second-order kinetic model. The zero point of charge was 7.9, and the optimal adsorption pH was 3-4. The adsorption of As by CABC was mainly due to electrostatic attraction and surface complexation, while the adsorption of F was mainly attributed to electrostatic attraction, ion exchange, and surface complexation. To sum up, the modified CABC is an excellent adsorption material for the treatment of As and F co-pollution in water bodies. |
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