title: Adsorption of Disperse Orange 30 dye onto activated carbon derived from Holm Oak (Quercus Ilex) acorns: A 3(k) factorial design and analysis.
abstract: In this study, samples of activated carbon were prepared from Holm Oak acorns by chemical activation with H3PO4, ZnCl2 and KOH as activating agents. The samples were characterized by SEM, BET, FTIR and elemental analysis, and were then evaluated for the removal of Disperse Orange 30 (DO30) dyes from aqueous solutions. A 3(k) factorial design was used to determine the interaction effects of carbonization temperature, pH, dosage of adsorbent and type of activating agent on the amount of dye removal. Also, level of effectiveness factors were determined by conducting regression models for maximum adsorption efficiency. Of all the samples, the sample generated using ZnCl2 as an activating agent showed a maximum dye removal efficiency of 93.5% at a carbonization temperature of 750 °C, a pH of 2 and an adsorbent dosage of 0.15 g/25 ml. The analysis shows that the adsorption process depends significantly on the type of activating agent used in the preparation of activated carbon.
authors.affiliation: Anadolu University, Department of Environmental Engineering, Eskisehir, Turkey. Electronic address: utezcan@anadolu.edu.tr.
authors.forename: Umran
authors.initials: U
authors.lastname: Tezcan Un
authors.affiliation: Anadolu University, Department of Chemical Engineering, Eskisehir, Turkey.
authors.forename: Funda
authors.initials: F
authors.lastname: Ates
authors.affiliation: Anadolu University, Department of Industrial Engineering, Eskisehir, Turkey.
authors.forename: Nihal
authors.initials: N
authors.lastname: Erginel
authors.affiliation: Anadolu University, Institute of Science, Eskisehir, Turkey.
authors.forename: Oznur
authors.initials: O
authors.lastname: Ozcan
authors.affiliation: Anadolu University, Institute of Science, Eskisehir, Turkey.
authors.forename: Emre
authors.initials: E
authors.lastname: Oduncu
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D006801:Humans; D007220:Industrial Waste / Q000517:prevention & control*; D029963:Quercus; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D004396:Coloring Agents; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D002606:Charcoal
keywords: Activated carbon; Dye removal; Factorial design; Holm Oak acorns