Feasibility of Paper–based Activated Carbon Fibers as Fried Oil Adsorbing Material

Han Chien LIN, Miao–Han YANG, Noboru FUJIMOTO
2020 Journal of the Faculty of Agriculture Kyushu University  
This study used corrugated cardboard (CC) as a precursor, and prepared the paper-based activated carbon fibers (PACFs) using steam activation, and evaluated the feasibility of using PACFs as fried oil adsorbing material. The yield of PACFs prepared under different activation conditions was 16.50-27.16%, the iodine value was 205.77-586.05 mg/g, and the methylene blue adsorption was 226.98-311.61 mg/g. Under the BDDT classification, the PACFs belonged to Type II, characterized by a large amount
more » ... by a large amount of mesopores and hysteresis loop phenomenon. Based on the IUPAC classification, PACFs were the slit pores of Type H3. According to the physicochemical properties of frying oil after heating, the unsaturated fatty acid generated free radicals or performed polymerization to form polymers as the heating time increased. The color change and viscosity were increased. Fried oil generated free fatty acid due to heating and hydrolysis and then the acid value increased, while the smoke point decreased. Fried oil generated hydroperoxide and nonvolatile substance due to oxidation reaction. The peroxide value and thiobarbituric acid value were increased. In addition, the PACFs were ground into GPACFs (Granular PACFs) and DPACFs (Powdered PACFs), and different percent weight of them was used as the adsorbing material. The viscosity, acid value, peroxide value, and thiobarbituric acid value of the fried oil were influenced. The 5% impregnating was able to decrease the aforesaid items by 30.6, 17.1, 40.9, and 71.3%, respectively.
doi:10.5109/2558903 fatcat:kklb6jqx6vhhrh3gk3wu6dip3a