Developing Lignosulfonate-Based Activated Carbon Fibers

Abstract

In this study, electrospinning technology, physical activation, and carbonization processing were applied to produce lignosulfonate-based activated carbon fibers. The porous structure of the produced lignosulfonate-based activated carbon fibers primarily contained mesopores and a relatively small amount of micropores. Moreover, insufficient carbonization caused fiber damage during CO2 activation. The weight loss rate and specific surface area increased with increase in carbonization time, and products with carbonization temperatures of 700 °C were of higher quality than those with other temperatures. Moreover, the two-step carbonization process provided fibers with improved quality because of a low weight loss rate, improved processing, and high surface area. Lignosulfonate-based activated carbon fibers can be used as a highly efficient adsorption and filtration material, and further development of its applications would be valuable.

Recent advances in lignin-based carbon fibers (LCFs): precursors, fabrications, properties, and applications

“…80 Chang et al produced lignin-based ACFs (LACFs) using CO 2 as the activation medium and discussed the effects of different activation conditions on the properties of the products. 88 Results showed that the weight loss rate and specific surface area of LACFs were increased with increasing activation temperature and time. The LACFs produced primarily contained mesopores and a relatively small amount of micropores.…”

AgNP-AC Composite Fibers and its Adsorption and Antibacterial Properties

“…Dai et al (2021) prepared polyacrylonitrile/graphene oxide/polyimide (PAN/GO/PI) composite nanofiber membranes by the electrospinning technology, which demonstrates a filtration efficiency of 99.5% on PM2.5. Activated carbon fiber (ACF) prepared with activated carbon (AC) as the solute has also been used in the field of filtration due to its large specific surface area and large adsorption capacity (Chang et al, 2018). Katepalli et al (2011) proposed a method for fabricating polyacrylonitrile (PAN) nanofibers with activated carbon microfibers (ACF).…”

Screening of Reactive Extractants for the Lignosulfonate Extraction from Lignosulfonate Model Solution and Spent Sulfite Liquor

“…First, the removal of lignin decreases the heating value of the spent liquor leading to an increased pulp production without overloading the recovery boiler. Second, the isolated lignin can be used for the production of other value-added products, such as bulk chemicals, carbon fibers, metal absorbents, packaging material, or additives for storage batteries. ,− …”