College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, PR China.
School of Engineering, RMIT University, 124 La Trobe Street, 3001, Melbourne, Victoria, Australia.
Chemosphere. 2021 Jun;273:129695. doi: 10.1016/j.chemosphere.2021.129695. Epub 2021 Jan 22.
Recently, the discharge of flue gas has become a global issue due to the rapid development in industrial and anthropogenic activities. Various dry and wet treatment approaches including conventional and hybrid hybrid wet scrubbing have been employing to combat against these toxic exhaust emissions. However, certain issues i.e., large energy consumption, generation of secondary pollutants, low regeneration of scrubbing liquid and high efficieny are hindering their practical applications on industrial level. Despite this, the hybrid wet scrubbing technique (advanced oxidation, ionic-liquids and solid engineered interface hybrid materials based techniques) is gaining great attention because of its low installation costs, simultaneous removal of multi-air pollutants and low energy requirements. However, the lack of understanding about the basic principles and fundamental requirements are great hurdles for its commercial scale application, which is aim of this review article. This review article highlights the recent developments, minimization of GHG, sustainable improvements for the regeneration of used catalyst via green and electron rich donors. It explains, various hybrid wet scrubbing techniques can perform well under mild condition with possible improvements such as development of stable, heterogeneous catalysts, fast and in-situ regeneration for large scale applications. Finally, it discussed recovery of resources i.e., NO, NH and N, the key challenges about several competitive side products and loss of catalytic activity over time to treat toxic gases via feasible solutions by hybrid wet scrubbing techniques.
最近，由于工业和人为活动的迅速发展，烟气排放已成为一个全球性问题。为了应对这些有毒废气排放，已经采用了各种干法和湿法处理方法，包括常规和混合湿法洗涤。然而，某些问题，如能源消耗大、二次污染物产生、洗涤液再生效率低和效率高，阻碍了它们在工业水平上的实际应用。尽管如此，由于其安装成本低、同时去除多种空气污染物和低能源需求，混合湿法洗涤技术（基于高级氧化、离子液体和固体工程界面混合材料的技术）受到了极大的关注。然而，缺乏对基本原理和基本要求的了解是其商业规模应用的巨大障碍，这也是本文综述的目的。本文综述了最近的发展情况，强调了通过绿色和富电子供体来最小化温室气体、可持续地改进用过的催化剂的再生。它解释了各种混合湿法洗涤技术可以在温和的条件下很好地运行，并可以通过开发稳定的、多相催化剂、快速和原位再生等方法进行改进，以实现大规模应用。最后，通过混合湿法洗涤技术讨论了资源（如 NO、NH 和 N）的回收、几个有竞争力的副产物的关键挑战以及随着时间的推移催化活性的损失，以处理有毒气体。
