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Ionic liquid based periodic mesoporous organosilica: An efficient support for removal of sunset yellow from aqueous solutions under ultrasonic conditions
Affiliation:1. Division of Advanced Materials Engineering, Hydrogen & Fuel Cell Research Center, Engineering Research Institute, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea;2. Department of Materials Engineering, Graduate School, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea;3. School of Applied Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea;4. Korea Energy Materials Ltd., 409 Daegu Technopark, 1-11 Hosan-dong, Dalseo-gu, Daegu 704-230, Republic of Korea;1. Chengdu Institute of Organic Chemistry, The Chinese Academy of Sciences, Chengdu 610041, Sichuan, China;2. University of Chinese Academy of Sciences, 100049 Beijing, China;1. Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, India;2. Department of Chemistry, College of Science, Building 5, King Saud University, Riyadh, Saudi Arabia;1. Department of Chemistry, Inha University, 100 Inharo, Nam-gu, Incheon, Republic of Korea;2. Department of Chemical Engineering, Yanbian University, 977 Gongyuan Road, Yanji, Jilin province 133002, People''s Republic of China;3. Industrial Liaison Research Institute, Department of Mechanical Engineering, College of Engineering, Kyung Hee University, Yongin, Republic of Korea
Abstract:The efficiency of an ionic liquid based periodic mesoporous organosilica (PMO-IL) in the removal of sunset yellow from aqueous solutions using ultrasonic assisted adsorption method was investigated. The PMO-IL was first characterized by nitrogen sorption and TEM techniques. The optimized conditions (0.013 g of adsorbent, 32 mg L−1 of sunset yellow at 2 min of sonication time and pH 7) were obtained by central composite design (CCD). Fitting the equilibrium data show the suitability of the Langmuir model with second-order equation to control the kinetic of the adsorption process and good reusability (5 cycles) of PMO-IL for adsorption of dye.
Keywords:Ionic liquid based periodic mesoporous organosilica  Adsorption  Central composite design  Desirability function  Response surface methodology  Sunset yellow
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