Desulfurization properties of modified activated carbon fibers and activated carbon fiber paper

作者：Liu Wei; Adanur Sabit^*

来源：Journal of Industrial Textiles, 2015, 44(4): 513-525.

DOI：10.1177/1528083713502997

• Activated carbon fiber
• sulfur dioxide
• desulfurization

As one of the promising adsorbents, activated carbon fibers were modified in order to enhance their sulfur dioxide removal efficiency by depositing strong oxidants. Potassium permanganate (KMnO4) was found to be an effective promoter for activated carbon fibers. The optimum content of KMnO4 on activated carbon fibers was 43.34wt% prepared from 6wt% KMnO4 solution. The composition of the challenge gas was found to affect the SO2 adsorption capacity of KMnO4 modified activated carbon fibers. The presence of water in the mainstream improved the desulfurization properties. Prehumidification of the challenge gas increased the breakthrough capacity. KMnO4 modified activated carbon fibers were durable in desulfurization properties during the wet-laying process and was made into activated carbon fiber papers with copolyester as the binder. KMnO4-ACFP was found to be able to maintain the SO2 capacity of KMnO4 modified activated carbon fibers with a breakthrough capacity of 76mg SO2/g modified activated carbon fiber and 90% saturation capacity of 186.75mg SO2/g modified activated carbon fiber. Sulfur content on KMnO4 modified activated carbon fibers was increased to 9.47wt% from 0.045wt% during the adsorption process which proves the adsorption of sulfur on fiber adsorbents.

• 出版日期2015-1