| 刊名 | Asian Agricultural Research |
| 作者 | Dilixiati·Abulizi |
| 作者单位 | Urumqi Vocational University |
| DOI | 10.19601/j.cnki.issn1943-9903.2024.05.004 |
| 年份 | 2024 |
| 刊期 | 5 |
| 页码 | 15-19 |
| 关键词 | Biochar, Goethite-modified biochar, Permeable reactive barrier (PRB), Mercury and arsenic pollution, Remediation efficiency |
| 摘要 | This study employed a modified biochar material to construct a permeable reactive barrier (PRB) for the treatment of water bodies polluted with mercury and arsenic. The experimental results demonstrated that the addition of goethite-modified biochar significantly enhanced the remediation efficiency of As (III), achieving a maximum removal rate of 100%. Conversely, pure biochar exhibited high efficiency in the removal of Hg (II), with a maximum removal rate approaching 100%. Furthermore, the pH level of the water significantly influenced the adsorption efficiency of heavy metal ions, with the optimal removal performance observed at a pH value of 6.0. The PRB system demonstrated excellent removal rates under low concentrations of heavy metals. However, as the concentration increased, the remediation efficiency exhibited a slight decrease. In summary, the findings of this study provide compelling evidence for the use of modified biochar in the construction of PRBs for the remediation of mercury- and arsenic-polluted water bodies. Furthermore, the study reveals the mechanism by which pH and heavy metal concentration influence remediation efficiency. |
