Effective Removal of High-Concentration Sulfur Dioxide by Nitrogen- Modified Activated Carbon Fibers

Title:Effective Removal of High-Concentration Sulfur Dioxide by Nitrogen- Modified Activated Carbon Fibers

Volume: 7 Issue: 1

Author(s): Yongjun Liu, Mengdan Gong, Wubo Fan, Xiaoli Liu, Huaqiang Yin and Yan Cheng

Affiliation:

Keywords: Activated carbon fibers, desulfurization, high-concentration, nitrogen-containing group, surface modification, sulfur dioxide.

Abstract: Surface-modified activated carbon fibers (ACFs) with nitrogen-containing groups were prepared by the heat treatment of ACFs with urea, and characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and thermogravimetry (TG). The removal activity of the samples was also tested at an SO₂ concentration of 22800 mg/Nm³. The results showed that the surface-modified ACFs significantly improved the SO₂-removal ability compared to the unmodified ones. The amount of C=O and the nitrogen-containing groups on the surface of the N-modified ACFs increased, resulting in improved SO₂-removal ability. The sample prepared with a urea concentration of 0.15 g/ml showed the best SO₂-removal performance.

Cite this article as:

Liu Yongjun, Gong Mengdan, Fan Wubo, Liu Xiaoli, Yin Huaqiang and Cheng Yan, Effective Removal of High-Concentration Sulfur Dioxide by Nitrogen- Modified Activated Carbon Fibers, Recent Innovations in Chemical Engineering 2014; 7 (1) . https://dx.doi.org/10.2174/2211334707666150115215545