Abstract
Development of a novel filter material is urgently required for replacing the high-cost flue gas purification technology in the simultaneous removal of both fine dust and Nitrogen oxides (NOx). In this study; polyphenylene sulfide (PPS) needle-punching fibrous felts (NPFF) were employed as the filter material to remove the fine dust; and in the meanwhile; Mn and Ce oxides were loaded onto the PPS NPFF as the catalyst for selective catalytic reduction of NOx with NH3. Two different pretreatment methods; i.e., sodium alginate (SA) deposition and plasma treatment; were employed to modify the PPS NPFF before the traditional impregnation and thermal treatment processes during the catalyst loading. The results showed that these two pretreatment methods both afforded the PPS NPFF with the enhanced loading rate and stability of Mn/Ce oxides compared to those without any pretreatments; which were significantly beneficial for the denitration application. Moreover; we found that both SA deposition and plasma pre-treated samples presented excellent dust-removal properties; and the filtration efficiency could reach 100% when the particle size of the fine particulates was above 4 μm. This study demonstrated that our Mn/Ce oxides decorated PPS NPFF have great potential to be applied in the fuel gas purification field; due to their stable structure; handling convenience; and excellent filtration efficiency; as well as high denitration performance.
Highlights
Environmental pollution is a combined effect of industrialization and urbanization, resulting in a significant decline in the human health index [1,2]
In order to address the pollution issues induced by fine particulates, bag filter technology has been widely employed by industry [4], which is applied into the field of high temperature and high concentration flue gas treatment [5,6]
The results presented in Figure that the Mn/Ce oxides decorated
Summary
Environmental pollution is a combined effect of industrialization and urbanization, resulting in a significant decline in the human health index [1,2]. The rapid increase of energy consumption directly spurred the enhanced emissions of various pollutants during the combustion of solid fuels. It is predicted that the total consumption of solid fuels will increase by roughly 20% from 2015 to. Fine particles are one of the key pollutant components from exhaust emissions. In order to address the pollution issues induced by fine particulates, bag filter technology has been widely employed by industry [4], which is applied into the field of high temperature and high concentration flue gas treatment [5,6]. Except for dust removal, another important aspect for flue gas processing is to effectively get rid of the hazard nitrogen oxide (NOx ) component, which could lead to a wide variety of respiratory
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