Open Access

ARTICLE

Analysis of the Stability of Filter Materials for Dust Removal and Denitration Integrated Applications

Wei Dong^1,2,3,4, Fuping Qian^5,*, Gang Li^1,*, Shi’an Zhou⁵, Lei Ding^2,4, Qingda Gao⁵, Xuemin Zeng¹

1 State Key Laboratory of Safety and Health for Metal Mines, Ma’anshan, 243000, China
2 Engineering Research Center of Biofilm Water Purification and Utilization Technology, Anhui University of Technology, Ma’anshan, 243032, China
3 Key Laboratory of Metallurgical Emission Reduction & Resources Recycling (Anhui University of Technology), Ministry of Education, Ma’anshan, 243032, China
4 School of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan, 243032, China
5 School of Energy and Environment, Anhui University of Technology, Ma’anshan, 243032, China

* Corresponding Authors: Fuping Qian. Email: ; Gang Li. Email:

Fluid Dynamics & Materials Processing 2025, 21(4), 833-849. https://doi.org/10.32604/fdmp.2024.056060

Received 13 July 2024; Accepted 25 November 2024; Issue published 06 May 2025

Abstract

Nitrogen oxides (NO_x) and particulate matter (PM) present significant risks to both human health and environmental sustainability. The Integrated Dust Removal and Denitrification Technology (DRDt) offers a more efficient and cost-effective solution for achieving ultralow industrial flue gas emissions; however, its effectiveness is undermined by low catalyst load rates and poor stability in filter materials. This study addresses these limitations by modifying conventional PTFE filter media (PTFE-Tim) through the incorporation of sodium alginate (SA) and dopamine (DA) as modifiers, resulting in two new filter materials: PTFE–SA–MOF and PTFE–DA–MOF. By optimizing the parameters of an orthogonal experimental design, we identified the ideal preparation conditions for these composite materials. The addition of SA and DA enhanced the bonding between the catalyst (Mn–Cu–MOF) crystal particles and the PTFE fibers through mechanisms such as ion exchange, hydrogen bonding, and adhesion. Consequently, the catalyst loading rate and stability of the DRDt filters were significantly improved. Specifically, the PTFE–SA–MOF and PTFE–DA–MOF filters achieved high catalyst loading rates of 15.97% and 15.86%, these values represent improvements of 2.53 and 2.51 times, while maintaining excellent stability, with mass retention rates of 98.64% and 98.27%, respectively, over the conventional PTFE-Tim filter.

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Keywords

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