Abatement of gaseous volatile organic compounds: A process perspective
Abatement of gaseous volatile organic compounds: A process perspective
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DOI：
10.1016/j.cattod.2019.05.069
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发表时间：
2020-06-15
期刊：
影响因子：
5.3
通讯作者：
Rezaei, Fateme
中科院分区：
文献类型：
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作者：
Krishnamurthy, Anirudh;Adebayo, Busuyi;Rezaei, Fateme
挥发性有机化合物 (VOC) 是一类饱和蒸气压较低的液体化合物，即使在环境条件下也能发生相变。这在排放方面造成了一个巨大的问题。即使浓度非常低 (ppm)，大部分 VOC 也会对健康造成灾难性影响，例如癌症或肝损伤，而控制这些化合物对于确保良好的空气质量至关重要。许多挥发性有机化合物用于常见的家用器具，例如木器漆或油漆，甚至可以在通风不当的烹饪过程中释放出来。这显着改变了室内空气质量，因此，对这些化合物的大部分研究都集中在室内空气上。另一方面，它们在大多数行业中广泛用作溶剂以及车辆尾气的排放率也会导致室外空气污染。这些挥发性有机化合物和氮氧化物污染物的结合往往会导致地面臭氧的形成，臭氧具有很大的生物毒性并导致烟雾的形成。由于车辆交通和工业化的增加，人口稠密的城市的挥发性有机化合物排放量也急剧上升。减少挥发性有机化合物有多种选择，它们与其他污染控制策略类似。这些方法大致可分为破坏法、分离法和混合法。这篇评论讨论了这种情况下需要考虑的不同观点，以及行业可用的不同方法的描述，以及最近引入的一些新技术。研究了每种方法的影响参数以及最佳催化剂/材料的选择。除此之外，还对数学建模的观点进行了检验，这对于控制 VOC 排放技术的模拟研究具有重要意义。
Volatile organic compounds (VOCs) are a class of liquid compounds with low saturation vapor pressures, which enables them to change phases even at ambient conditions. This causes a huge problem when it comes to emissions. A large portion of VOCs cause catastrophic health effects such as cancer or liver damage even at very low concentrations (ppm), and the control of these compounds is vital in ensuring good air quality. Many VOCs are used in common household implements such as wood finishes or paints and can even be emitted off improperly ventilated cooking. This significantly alters indoor air quality, and as such, a large portion of research into these compounds have focused on indoor air. On the other hand, their widespread use as solvents in most industries along with their emission rates from vehicular exhausts results in contamination of outdoor air as well. The combination of these VOCs and NOxpollutants tends to cause ground level ozone formation, which has a large bio-toxicity and causes the formation of a smog. Densely populated cities have also seen a sharp rise in VOC emissions due to the increase in both vehicular traffic and industrialization. A myriad of options is available for the abatement of VOCs, and they are similar to other pollution control strategies. These methods can be broadly be classified into destruction, separation and hybrid methods. This review discusses the different perspectives to be considered for this scenario, along with descriptions of the different methods available to the industry, along with some novel technologies that have been introduced recently. The influential parameters for each method have been investigated, along with optimum catalyst/material selection. In addition to this, a mathematical modeling perspective has also been examined, with significance to simulation studies performed for the control of VOC emission technologies.