AI Article Synopsis
- Zero-valent iron (ZVI) is a promising technology for cleaning up environmental pollutants but struggles with low reactivity towards tougher contaminants.
- Strategies to improve ZVI's effectiveness include pretreatment methods, developing more active ZVI-based materials, and using additional support measures.
- This review summarizes these strategies, their advantages and drawbacks, challenges for large-scale use, and future directions for ZVI technology advancements.
Article Abstract
Application of zero-valent iron (ZVI) has become one of the most promising innovative technologies for the remediation of environmental pollutants. However, ZVI may suffer from the low intrinsic reactivity toward refractory pollutants, which seriously restricts its practical application in fields. Therefore, strategies have been developing to enhance the reactivity of ZVI. Until now, the most commonly used strategies include pretreatment of ZVI, synthesis of highly-active ZVI-based materials and additional auxiliary measures. In this review, a systematic and comprehensive summary of these commonly used strategies has been conducted for the following purposes: (1) to understand the fundamental mechanisms of the selected approaches; (2) to point out their advantages and shortcomings; (3) to illustrate the main problems of their large-scale application; (4) to forecast the future trend of developing ZVI technologies. Overall, this review is devoted to providing a fundamental understanding on the mechanism for enhancing the reactivity of ZVI and facilitating the practical application of ZVI technologies in fields.
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| http://dx.doi.org/10.1016/j.jenvman.2022.115381 | DOI Listing |
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