Recycling of different solid wastes in synthesis of high-order mesoporous silica as adsorbent for safranin dye
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Silica mesoporous materials of MCM-48 type were successfully synthesized using different types of silica-bearing solid wastes including silica fume, silica gel from rice husk ash and glass wastes as adsorbents for safranin dye. This represents an effective recycling technique for the production of such advanced materials from low-cost solid wastes instead of chemicals. The materials were synthesized by hydrothermal treatment process for 48 h in the presence of an organic template at 110 °C followed by calcination at 550 °C. The products were identified utilizing XRD and SEM analyses to investigate the structural and the morphological features. The used silica precursors exhibit a significant effect on the morphologies of synthetic MCM-48 materials and their adsorption behaviors. The adsorption properties were addressed based on a series of traditional and advanced equilibrium models. The adsorption results reflected the higher capacity for the dye molecules using glass-based MCM-48 than fume-based MCM-48 and rice silica gel-MCM-48. However, the uptake results of glass-based MCM-48 is of monolayer type and can be explained by Langmuir model and the uptake by the other synthetic products (fume-based MCM-48 and rice gel-based MCM-48) is of multilayer type and fitted with Freundlich model. The mathematical parameters of advanced isotherm model (monolayer model of two energies) reflected the theoretical values of adsorption capacity, number of adsorbed safranin molecules per active site, the average number of sites occupied by dye and the density of the present receptor sites.
KeywordsSolid wastes Mesoporous silica Morphology Adsorption
The authors wish to thank all who assisted in conducting this work.
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Conflict of interest
The authors want to declare that there is no conflict in interest.
- Adam F, Balakrishnan S, Wong P (2006) Rice husk ash silica as a support material for ruthenium based heterogenous catalyst. J Phys Sci 17(2):1–13Google Scholar
- Banerjee S, Sharma GC, Dubey S (2015) Adsorption characteristics of a low cost activated carbon for the removal of victoria blue from aqueous solutions. J Mater Environ Sci 6(8):2045–2052Google Scholar
- Farahani M, Kashisaz M, Abdullah SRS (2015) Adsorption of safranin O from aqueous phase using sugarcane bagasse. Int J Ecol Sci Environ Eng 2:17–29Google Scholar
- Ghaedi M, Nasiri Azad F, Dashtian K, Hajati S, Goudarzi A, Soylak M (2016) Central composite design and genetic algorithm applied for the optimization of ultrasonic-assisted removal of malachite green by ZnO nanorod-loaded activated carbon Source. Spectrochim Acta Part A Mol Biomol Spectrosc 167:157–164CrossRefGoogle Scholar
- Giles CH, McEwan TH, Nakhawa SN, Smith D (1960) Studies in adsorption: part XI. A system of classification of solution adsorption isotherms and its use in diagnosis of adsorption mechanisms and in measurement of specific surface areas of solids. J Chem Soc 3973–3993Google Scholar
- Hema M, Arivoli S (2008) Adsorption kinetics and thermodynamics of malachite green dye unto acid activated low-cost carbon. J Appl Sci Environ Manag 12:43Google Scholar
- Mohammed MA, Ibrahim A, Shitu A (2014) Batch removal of hazardous safranin-O in wastewater using pineapple peels as an agricultural waste based adsorbent. Int J Environm Monit Anal 2(3):128–133Google Scholar
- Ramachandra TV, Varghese SK (2003) Exploring possibilities of achieving sustainability in solid waste management. Environ Health 45:255–264Google Scholar
- Samaka IS (2014) Removal of basic Red 2 from industrial effluents using natural Iraqi material. Civil Environ Res 6(7):138–148Google Scholar
- Sellaoui L, Guedidi H, Masson S, Reinert L, Levêque J, Knani S, Ben Lamine A, Khalfaoui M, Duclaux L (2016) Steric and energetic interpretations of the equilibrium adsorption of two new pyridinium ionic liquids and ibuprofen on a microporous activated carbon cloth: statistical and COSMO-RS models. Fluid Phase Equilib 25:156–163CrossRefGoogle Scholar
- Siddique R, Iqbal Khan M (2011) Supplementary cementing materials. Engineering materials. Springer, Berlin. https://doi.org/10.1007/978-3-642-17866-5-2
- Song Z, Chen L, Huand J, Richards R (2009) NiO nanosheets as efficient and recyclable adsorbents for dye pollutant removal from wastewater. Nanotechnology 20:2–10Google Scholar