Biosorption by Environmental, Natural and Acid-Activated Orange Peels as Low-Cost Aadsorbent: Optimization of Disperse Blue 183 as a Model
Ahmed Taifi, Ola Kamal A. Alkadir, Athraa A. Oda, Aseel M. Aljeboree, Abdul Latif Al Bayaa, Ayad F. Alkaim, Salwan Ali Abed
Abstract
Abstract In this research, agricultural waste was used as effective, environmentally friendly and inexpensive adsorbents one type of agricultural waste such as orange peels ( NOP) to remove Disperse Blue 183 dye from its aqueous solution in this study using three kind Natural orange peels ( NOP), Activated Carbon Orange Peels (ACOP) and Acid-Activated Carbon Orange Peels ( AACOP). Preparation of acid-activation Orange Peel (AACOP) using 0.1N phosphoric acid, where the adsorption efficiency of NOP, ACOP and AACOP synthesis were 120.22, 125.67 and 155.12 mg/g and removal percentage E% (80.21%,92.34%,98.22% ), respectively. The (FTIR ) and (FESEM ) technique was used to determine the surface characteristics before and after the adsorption process. Two types of adsorption isotherms were studied, the Freindlich and Langmuir model. The equilibrium data showed that it obeys the Freindlich model where the value of ( R 2 = 0.9777) was compared with the Langmuir model ( R 2 = 0.9533). Parameters were derived Thermodynamic including (ΔG°), (ΔH°), and (ΔS°) are found to be spontaneous and endothermic in nature.