Removal of Bisphenol A aqueous solution using surfactant-modified natural zeolite: Taguchi's experimental design, adsorption kinetic, equilibrium and thermodynamic study
| Autor: | Odul Kilicoglu, Ali Oğuzhan Narci, Nevim Genç |
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| Rok vydání: | 2016 |
| Předmět: |
endocrine system
Bisphenol A Kinetics 02 engineering and technology 010501 environmental sciences 01 natural sciences Waste Disposal Fluid law.invention Taguchi methods chemistry.chemical_compound Surface-Active Agents Adsorption Pulmonary surfactant Magazine Phenols law Environmental Chemistry Benzhydryl Compounds Zeolite Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Aqueous solution Chemistry Cetrimonium General Medicine 021001 nanoscience & nanotechnology Chemical engineering Cetrimonium Compounds Zeolites Thermodynamics 0210 nano-technology Water Pollutants Chemical |
| Zdroj: | Environmental technology. 38(4) |
| ISSN: | 1479-487X |
| Popis: | In this study, surfactant-modified natural zeolite was used to remove Bisphenol A (BPA) from aqueous solutions. Kinetics, equilibrium and thermodynamics of BPA adsorption on the adsorbent surfaces were investigated. The experimental data were described with the Temkin isotherm and the pseudo-second- order kinetic model. Taguchi's robust design approach was used to optimize adsorption of BPA. Experimentation was planned as per Taguchi's L27 orthogonal array. Tests were conducted with different adsorbate amount, pH, time, initial concentration of BPA, temperature and agitation speed. The optimum levels of control factors for maximum total organic carbon removal were defined (adsorbate amount at 0.25 g, pH at 7, time at 30 min, initial concentration of BPA at 50 mg/L, temperature at 30°C and agitation speed at 200 rpm). The ANOVA analysis shown that the most effective control factor is adsorbent dosage; its contribution is 56.4%. Contribution of pH and mixing rate are 7.5% and 7.6%, respectively. A confirmation experiment was conducted to verify the feasibility and effectiveness of the optimal combination. The observed value of S/N (η |
| Databáze: | OpenAIRE |
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