Advanced Oxidant Process with Fe(II)-Catalyzed Alkaline H2O2 Systems for Highly Efficient Concurrent Scavenging of NO and SO2 in High Gravitational Fields,Industrial & Engineering Chemistry Research

当前位置： X-MOL 学术 › Ind. Eng. Chem. Res. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Advanced Oxidant Process with Fe(II)-Catalyzed Alkaline H2O2 Systems for Highly Efficient Concurrent Scavenging of NO and SO2 in High Gravitational Fields
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-10-24 , DOI: 10.1021/acs.iecr.2c03222
Hongyu Chen _{1,

2} , Zhicheng Lu ₁ , Yang Chen ₁ , Shao Wu ₁ , Jianzhong Zheng ₁ , Zhi Qian _{1,

2}

Affiliation

The simultaneous removal of NO and SO₂ has always been challenging in a single reactor. The key to solving this problem is to enhance NO conversion to soluble N species. In this study, a high-gravity (HiGee)-enhanced advanced oxidation process (AOP) using a Fe²⁺-catalyzed alkaline H₂O₂ system was proposed to improve NO oxidation for simultaneous NO and SO₂ attenuation within a single rotating packed bed (RPB). We found that the mixture solution obtained by momentarily mixing FeSO₄ and alkaline H₂O₂ had excellent capacity for thoroughly removing NO and SO₂ in the RPB. O₂^·– has proven to be the dominant radical responsible for NO conversion, with ONOO^– acting as an intermediate. FeSO₄ promotes NO removal by providing ̇OH from alkaline H₂O₂, resulting in higher O₂^·– yields. Increased NaOH is conducive to NO removal because it promotes O₂^·– generation from H₂O₂. A high gravity level in the HiGee process significantly intensified NO and SO₂ capture because the rapid renewal of the liquid film provided more opportunities for ̇OH, O₂^·–, and H₂O₂ to be exposed on the surface of the liquid film. Exploiting this inherent but novel mechanism provides theoretical guidance for developing HiGee-enhanced AOP technology that can simultaneously remove NO and SO₂.

中文翻译：

Fe(II) 催化碱性 H2O2 系统的高级氧化工艺在高引力场中高效同时清除 NO 和 SO2

在单个反应器中同时去除 NO 和 SO ₂一直具有挑战性。解决这个问题的关键是提高 NO 转化为可溶性 N 物种。^{在这项研究中，提出了一种使用 Fe 2+}催化的碱性 H ₂ O ₂系统的高重力 (HiGee) 增强高级氧化工艺 (AOP)来改善 NO 氧化，从而在单个旋转填料内同时衰减NO 和 SO ₂床（RPB）。我们发现，将FeSO ₄和碱性H ₂ O ₂瞬时混合得到的混合溶液对RPB中的NO和SO ₂具有极好的彻底去除能力。O ₂^·–已被证明是负责 NO 转化的主要自由基，而 ONOO ^-充当中间体。FeSO _{4通过从碱性H}₂ O ₂中提供̇OH 来促进NO 去除，从而产生更高的O ₂^·-产率。增加NaOH有利于NO的去除，因为它促进了H ₂ O _2中O₂^·-的生成。HiGee 过程中的高重力水平显着加强了 NO 和 SO ₂的捕获，因为液膜的快速更新为 ̇OH、O ₂^·–和 H ₂ O _{2提供了更多机会}暴露在液膜表面。_{利用这种固有而新颖的机制为开发可同时去除NO和SO 2}的HiGee增强AOP技术提供了理论指导。

更新日期：2022-10-24

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南