| 祁宝川,徐志亮,易校石,徐虎,冯丹.化学通报,2023,86(7):815-823. |
| 生物炭负载纳米零价铁的制备及其在环境修复中的研究进展[1] |
| Research progress on preparation and environmental remediation of biochar-supported nanoscale zerovalent iron |
| 投稿时间：2022-11-22 修订日期：2023-01-16 |
| DOI： |
| 中文关键词: 生物炭 纳米零价铁 环境修复 |
| 英文关键词:Biochar Nanoscale zero-valent iron Environmental remediation |
| 基金项目:新疆维吾尔自治区高校科研计划自然科学青年项目(XJEDU2021Y045)和国家重点研发计划项目(2017YFC0210301)资助 |
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| 中文摘要: |
| 纳米零价铁（nZVI）作为一种高效还原性修复材料被广泛应用于多种污染物的去除，但易团聚、易被氧化失活的缺陷使其应用受到局限。近年来，研究者们通过将nZVI负载在多孔生物炭（BC）上来改善其本身缺陷，以期提高其应用潜力。本文综述了近年来nZVI/BC的制备方法及优缺点，总结分析了nZVI/BC对水体、土壤和沉积物中多种有机和无机污染物的去除效果和机理。同时综述了不同老化方法对nZVI/BC稳定性和反应活性的影响。在此基础上，在改进nZVI/BC制备技术、应用范围的拓展、潜在的生态和健康风险、探索老化过程和老化机制等方面进行了展望，旨在为nZVI/BC的理论研究和工程实践提供借鉴和参考。 |
| 英文摘要: |
| Nano zero-valent iron (nZVI) as a kind of efficiently reducing remediation material is widely used in various pollutants removal. However, the application of nZVI in the environmental remediation field is limited as its easy agglomeration and easy oxidation. In recent years, researchers have loaded nZVI onto porous biochar (BC) to improve its application potential. In this review, the preparation methods, and advantages and disadvantages of nZVI/BC were investigated, as well as summarized the removal effects and mechanisms of nZVI/BC on various organic and inorganic pollutants. Meanwhile, the effects of different aging methods on the stability and reactivity of nZVI/BC were reviewed. Finally, we outlook the future of the improvement of nZVI/BC preparation technology, the expansion of application, potential ecological and health risks, and the exploration of aging process and aging mechanism. The purpose of this review is to provide reference for theoretical research and engineering practice of nZVI/BC. |
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