Comparative Evaluation of Activated Carbons Prepared by Thermo-Chemical Activation of Lignocellulosic Residues in Fixed Bed Column Studies

Abstract

Abstract-This paper presents a comparative evaluation of two activated carbons produced from different lignocellulosic residues (spent coffee grounds and Raphanus Sativus press cake), as adsorbents for removal of phenol from aqueous solutions in fixed-bed column studies. Both the prepared adsorbents presented outstanding adsorption capacities when compared to other low-cost adsorbents presented in the literature. Breakthrough curves were produced and several breakthrough models were evaluated for adequate description of the adsorption process in the column, with the Dose-Response model presenting the best fit to the experimental data.

Quality Improvement of Crude Glycerol from Biodiesel Production Using Activated Carbon Derived from Krabok (Irvingia malayana) Seed Shells

“…An example of an abundant and reasonably inexpensive adsorbent is activated charcoal, which can be prepared through physical or chemical activation methods or a combination of both. [12][13][14][15] Hence, this study aims to improve the purity of raw glycerol obtained from biodiesel production by employing activated carbon derived from Krabok (Irvingia malayana) seed shells. This initiative is inspired by the plentiful Krabok trees in Sakon Nakhon Province, Thailand, whose seed flesh is employed for diverse purposes, including consuming and producing various goods.…”