Department of Chemical and Biomolecular Engineering, Chonnam National University, Yeosu, Jeonnam 59626, South Korea; Department of Biomaterials, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai-600077, India.
Interdisciplinary Research Centre for Refining and Advanced Chemicals, King Fahd, University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
Environ Res. 2024 Jun 15;251(Pt 1):118472. doi: 10.1016/j.envres.2024.118472. Epub 2024 Mar 6.
Volatile organic compounds (VOCs) are harmful pollutants emitted from industrial processes. They pose a risk to human health and ecosystems, even at low concentrations. Controlling VOCs is crucial for good air quality. This review aims to provide a comprehensive understanding of the various methods used for controlling VOC abatement. The advancement of mono-functional treatment techniques, including recovery such as absorption, adsorption, condensation, and membrane separation, and destruction-based methods such as natural degradation methods, advanced oxidation processes, and reduction methods were discussed. Among these methods, advanced oxidation processes are considered the most effective for removing toxic VOCs, despite some drawbacks such as costly chemicals, rigorous reaction conditions, and the formation of secondary chemicals. Standalone technologies are generally not sufficient and do not perform satisfactorily for the removal of hazardous air pollutants due to the generation of innocuous end products. However, every integration technique complements superiority and overcomes the challenges of standalone technologies. For instance, by using catalytic oxidation, catalytic ozonation, non-thermal plasma, and photocatalysis pretreatments, the amount of bioaerosols released from the bioreactor can be significantly reduced, leading to effective conversion rates for non-polar compounds, and opening new perspectives towards promising techniques with countless benefits. Interestingly, the three-stage processes have shown efficient decomposition performance for polar VOCs, excellent recoverability for nonpolar VOCs, and promising potential applications in atmospheric purification. Furthermore, the review also reports on the evolution of mathematical and artificial neural network modeling for VOC removal performance. The article critically analyzes the synergistic effects and advantages of integration. The authors hope that this article will be helpful in deciding on the appropriate strategy for controlling interested VOCs.
挥发性有机化合物（VOCs）是工业过程中排放的有害污染物。它们即使在低浓度下也会对人类健康和生态系统构成威胁。控制 VOCs 对于空气质量至关重要。本综述旨在提供对用于控制 VOC 减排的各种方法的全面理解。讨论了单功能处理技术的进步，包括回收技术如吸收、吸附、冷凝和膜分离，以及破坏型方法如自然降解方法、高级氧化工艺和还原方法。在这些方法中，高级氧化工艺被认为是去除有毒 VOC 的最有效方法，尽管存在一些缺点，如昂贵的化学品、苛刻的反应条件和二次化学物质的形成。由于会产生无害的最终产物，因此独立技术通常不足以满足去除危险空气污染物的要求，而且性能也不尽如人意。然而，每种集成技术都具有互补优势，可以克服独立技术的挑战。例如，通过使用催化氧化、催化臭氧化、非热等离子体和光催化预处理，可以显著减少生物反应器释放的生物气溶胶量，实现非极性化合物的有效转化率，并为具有无数优势的有前途的技术开辟新的前景。有趣的是，三阶段工艺已显示出对极性 VOC 的高效分解性能、对非极性 VOC 的出色回收能力，以及在大气净化方面具有广阔的应用前景。此外，本文还报告了用于 VOC 去除性能的数学和人工神经网络建模的演变。文章批判性地分析了集成的协同效应和优势。作者希望本文将有助于确定控制感兴趣的 VOC 的适当策略。
