Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/812
Title: A novel silica xerogel synthesized from volcanic tuff as an adsorbent for high-efficient removal of methylene blue: parameter optimization using Taguchi experimental design
Authors: Kaya, Gülcihan Güzel
Yılmaz, Elif
Deveci, Hüseyin
Keywords: Synthesis
Powder
Waste-Water
Adsorption
Experimental Design
Selective Adsorption
Mesoporous Materials
Aqueous-Solution
Low-Density
Aerogels
Dye
Equilibrium
Kinetics
Ash
Performance
Issue Date: 2019
Publisher: WILEY
Abstract: BACKGROUND In this study, silica xerogel was synthesized using volcanic tuff instead of expensive silica precursors at ambient pressure drying. The mesoporous silica xerogel with unique structural and textural properties was evaluated as an adsorbent for methylene blue (MB) removal from aqueous solution. Taguchi method was applied to optimize controllable factors (contact time, initial MB concentration, silica xerogel dose, temperature and pH) for MB removal. RESULTS The temperature was determined as the most significant factor with percentage contribution of 54.50%. MB removal efficiency was 96.18% at optimum conditions (contact time: 60 min, initial MB concentration: 20 ppm, silica xerogel dose: 0.0016 g mL(-1), temperature: 40 degrees C, pH: 5). The experimental data fitted with the Langmuir isotherm, yielding a maximum adsorption capacity of 51.967 mg g(-1). MB desorption process was performed depending on eluent concentration and contact time. Maximum desorption efficiency was specified as 88% using 1 M hydrochloric acid for 4 h. The silica xerogel was easily recycled with retaining approximately 70% of adsorption efficiency after five cycles. CONCLUSION In the light of the promising results, the silica xerogel can be used as an effective adsorbent in many environmental applications. (c) 2019 Society of Chemical Industry
URI: https://doi.org/10.1002/jctb.6089
https://hdl.handle.net/20.500.13091/812
ISSN: 0268-2575
1097-4660
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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