Sách Preparation of selenium-doped activated carbon and its utilization for improving the quality of used

Abstract: Activated carbon (AC) doped with Selenium (Se) element (2.5% w/w) was prepared by calcination, oxidization and reduction processes. The modified activated carbon (MAC) material exhibited specific surface area and total pore volume of 889.43 m2/g and 486.35 cc/g.10–3, respectively, and these are higher than ordinary AC. The pore size determination showed a distribution of 63.88% mesopore and 36.12% micropore. Several key quality indicators of the oil were determined for the used coconut oil before and after being treated with the MAC and these were compared to those of fresh coconut oil. The prepared MAC shows promise as an effective material for the low cost regeneration of used coconut oil, especially in reducing the level of peroxide value and free fatty acids.