Department of Science of Technology Innovation, Nagaoka University of Technology, Niigata, Japan.
Centre for Environmental and Energy Research, Ghent University Global Campus, Incheon, Republic of Korea; Department of Green Chemistry and Technology, Ghent University, Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), Ghent, Belgium.
Environ Res. 2024 Oct 1;258:119418. doi: 10.1016/j.envres.2024.119418. Epub 2024 Jun 18.
Highly colored azo dye-contaminated wastewater poses significant environmental threats and requires effective treatment before discharge. The anaerobic azo dye treatment method is a cost-effective and environmentally friendly solution, while its time-consuming and inefficient processes present substantial challenges for industrial scaling. Thus, the use of iron materials presents a promising alternative. Laboratory studies have demonstrated that systems coupled with iron materials enhance the decolorization efficiency and reduce the processing time. To fully realize the potential of iron materials for anaerobic azo dye treatment, a comprehensive synthesis and evaluation based on individual-related research studies, which have not been conducted to date, are necessary. This review provides, for the first time, an extensive and detailed overview of the utilization of iron materials for azo dye treatment, with a focus on decolorization. It assesses the treatment potential, analyzes the influencing factors and their impacts, and proposes metabolic pathways to enhance anaerobic dye treatment using iron materials. The physicochemical characteristics of iron materials are also discussed to elucidate the mechanisms behind the enhanced bioreduction of azo dyes. This study further addresses the current obstacles and outlines future prospects for industrial-scale application of iron-coupled treatment systems.
高色度偶氮染料污染废水对环境构成重大威胁，在排放之前需要进行有效处理。厌氧偶氮染料处理方法是一种具有成本效益和环境友好的解决方案，但其耗时和低效的过程对工业规模应用带来了巨大挑战。因此，铁材料的使用成为一种有前途的替代方法。实验室研究表明，与铁材料结合的系统可以提高脱色效率并缩短处理时间。为了充分发挥铁材料在厌氧偶氮染料处理中的潜力，需要对迄今为止尚未进行的相关研究进行全面的综合评估。这篇综述首次全面详细地介绍了铁材料在偶氮染料处理中的应用，重点是脱色。它评估了处理潜力，分析了影响因素及其影响，并提出了利用铁材料增强厌氧染料处理的代谢途径。还讨论了铁材料的物理化学特性，以阐明增强偶氮染料生物还原的机制。本研究进一步解决了当前的障碍，并概述了铁偶联处理系统在工业规模应用方面的未来前景。
