Removal of Methylene Blue from Aqueous Solutions with Fly Ash Based Geopolymer Foam
Geopolymers are ceramic like materials synthesized by alkali activation of aluminosilicate powder at relatively low temperatures. Geopolymers have excellent properties such as high mechanical strength, high acid resistance, and high fire resistance. Depending on the properties of geopolymers, they have many application fields like adsorption, waste encapsulation, and construction industry. Adsorption is one of the remarkable application areas of geopolymers. Due to the increasing demand for clean water resources, the need for developments in water treatment is also increasing. Geopolymers offer cost effective and environmentally friendly alternatives to adsorbent materials. Many waste materials including fly ash and blast furnace slag can be used to synthesize geopolymeric materials. In this experimental study fly ash was used as raw material and geopolymer foam was produced by using 4 M sodium hydroxide and sodium silicate. Hydrogen peroxide was utilized to obtain foamed material. Fresh geopolymer paste cured at 80°C for 4 hours and then aged at laboratory conditions. Samples aged for 28 days were used in methylene blue removal from an aqueous solution. Adsorption experiments were carried out at laboratory conditions under normal light and under UV lamp in the presence of TiO2. The concentration of the solution obtained at the end of the adsorption contact time was determined by UV/VIS spectrophotometer at 665 nm. The effect of adsorbent ratio and temperature on removal efficiency and adsorption capacity were investigated. The highest removal efficiency values were obtained as 92% and 83% under UV lamp and normal light, respectively. The results indicated that geopolymers are very promising materials that can be used in methylene blue removal.
Removal of Methylene Blue from Aqueous Solutions with Fly Ash Based Geopolymer Foam
Geopolymers are ceramic like materials synthesized by alkali activation of aluminosilicate powder at relatively low temperatures. Geopolymers have excellent properties such as high mechanical strength, high acid resistance, and high fire resistance. Depending on the properties of geopolymers, they have many application fields like adsorption, waste encapsulation, and construction industry. Adsorption is one of the remarkable application areas of geopolymers. Due to the increasing demand for clean water resources, the need for developments in water treatment is also increasing. Geopolymers offer cost effective and environmentally friendly alternatives to adsorbent materials. Many waste materials including fly ash and blast furnace slag can be used to synthesize geopolymeric materials. In this experimental study fly ash was used as raw material and geopolymer foam was produced by using 4 M sodium hydroxide and sodium silicate. Hydrogen peroxide was utilized to obtain foamed material. Fresh geopolymer paste cured at 80°C for 4 hours and then aged at laboratory conditions. Samples aged for 28 days were used in methylene blue removal from an aqueous solution. Adsorption experiments were carried out at laboratory conditions under normal light and under UV lamp in the presence of TiO2. The concentration of the solution obtained at the end of the adsorption contact time was determined by UV/VIS spectrophotometer at 665 nm. The effect of adsorbent ratio and temperature on removal efficiency and adsorption capacity were investigated. The highest removal efficiency values were obtained as 92% and 83% under UV lamp and normal light, respectively. The results indicated that geopolymers are very promising materials that can be used in methylene blue removal.
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- A. A. Siyal, M. R. Shamsuddin, M. I. Khan, N. E. Rabat, M. Zulfiqar, Z. Man, J. Siame and K. A. Azizli, ‘A review on geopolymers as emerging materials for the adsorption of heavy metals and dyes’, Journal of Environmental Management, vol. 224, pp. 327-339, 2018.
- M. E. Alouani, H. Saufi, G. Moutaoukil, S. Alehyen, B. Nematollahi, W. Belmaghraoui and T. Taibi, ‘Application of geopolymers for treatment of water contaminated with organic and inorganic pollutants: State-of-the-art review’, Journal of Environmental Chemical Engineering, vol. 9, 105095, 2021.
- K. Kaya-Özkiper, A. Uzun and S. Soyer-Uzun, ‘A novel alkali activated magnesium silicate as an effective and mechanically strong adsorbent for methylene blue removal’, Journal of Hazardous Materials, vol. 424, 127256, 2022.
- J. Ramírez-Aparicio, J. E. Samaniego-Benítez, M. A. Murillo-Tovar, J. L. Benítez-Benítez, E. Mu˜noz-Sandoval and M. L. García-Betancourt, ‘Removal and surface photocatalytic degradation of methylene blue on carbon nanostructures’, Diamond & Related Materials, vol. 119, 108544, 2021.
- O. Moradi and G. Sharma, ‘Emerging novel polymeric adsorbents for removing dyes from wastewater: A comprehensive review and comparison with other adsorbents’, Environmental Research, vol. 201, 111534, 2021.
- H. Saufi, M. E. Alouani, S. Alehyen, M. E. Achouri, J. Aride and M. Taibi, ‘Photocatalytic degradation of methylene blue from aqueous medium onto perlite-based geopolymer’, International Journal of Chemical Engineering, vol. 2020, Article ID 9498349, 2020.
- S. Liu, C. Zuo and J. Xia, ‘Solid-state synthesis and photodegradation property of anatase TiO2 micro-nanopowder by sodium replacement’, Solid State Sciences, vol. 115, 106589, 2021.
- Y. O. Khaniabadi, R. Heydari, H. Nourmoradi, H. Basiri and H. Basiri, ‘Low-cost sorbent for the removal of aniline and methyl orange from liquid-phase: Aloe Vera leaves wastes’, Journal of the Taiwan Institute of Chemical Engineers, vol. 68, pp. 90-98, 2016.
- Y. Zhang and L. Liu, ‘Fly ash-based geopolymer as a novel photocatalyst for degradation of dye from wastewater’, Particuology, vol. 11, pp. 353– 358, 2013.
- L. Chen, K. Zheng and Y. Liu, ‘Geopolymer-supported photocatalytic TiO2 film: Preparation and characterization’, Construction and Building Materials, vol. 151, pp. 63–70, 2017.
- P. Duxon, A. Fernandez-Jimenez, J.L. Provis, G.C. Lukey, A. Palomo and van Deventer J.S.J., ‘Geopolymer technology: The current state of the art’, Journal of Materials Science, vol. 42, pp. 2917-293, 2007
- E.I. Diaz, E.N. Allouche and S. Eklund, ‘Factors affecting the suitability of fly ash as source material for geopolymers’, Fuel, vol. 89, pp. 992-996, 2010.
- B. Singh, G. Ishwarya, M. Gupta and S.K. Bhattacharyya, ‘Geopolymer concrete: A review of some recent developments’, Construction and Building Materials, vol. 85, pp. 78–90, 2015.
- T. Bakharev, ‘Geopolymeric materials prepared using Class F fly ash and elevated temperature curing’, Cement and Concrete Research, vol. 35, pp. 1224– 1232, 2005.
- E. Alvarez-Ayuso, X. Querol, F. Plana, A. Alastuey, N. Moreno, M. Izquierdo, O. Font, T. Moreno, S. Diez, E. Vazquez and M. Barra, ‘Environmental, physical and structural characterisation of geopolymer matrixes synthesised from coal (co-) combustion fly ashes’, Journal of Hazardous Materials, vol. 154, pp. 175-183, 2008.
- P. Cong and Y. Cheng, ‘Advances in geopolymer materials: A comprehensive review’, Journal of Traffic and Transportation Engineering (English Edition), vol. 8(3), pp. 283-314, 2021.
- B. Ren, Y. Zhao, H. Bai, S. Kang, T. Zhang and S. Song, ‘Eco-friendly geopolymer prepared from solid wastes: A critical review’, Chemosphere, vol. 267, 128900, 2021.
- Y. H. M. Amran, R. Alyousef, H. Alabduljabbar, M. El-Zeadani, ‘Clean production and properties of geopolymer concrete; A review’, Journal of Cleaner Production, vol. 251, 119679, 2020.
- S. K. John, Y. Nadir and K. Girija, ‘Effect of source materials, additives on the mechanical properties and durability of fly ash and fly ash-slag geopolymer mortar: A review’, Construction and Building Materials, vol. 280, 122443, 2021.
- P. Rożek, M. Król and W. Mozgawa, ‘Lightweight geopolymer-expanded glass composites for removal of methylene blue from aqueous solutions’, Ceramics International, vol. 46, pp. 19785–19791, 2020.
- D. Wattanasiriwech, K. Yomthong and S. Wattanasiriwech, ‘Adsorption efficiency and photocatalytic activity of fly ash-based geopolymer foam mortar’, Ceramics International, vol. 47, pp. 27361–27371, 2021.
- T. de O. Guidolin, N. M. Possolli, M. B. Polla, T. B. Wermuth, T. F. de Oliveira, S. Eller, O. R. K. Montedo, S. Arcaro and M. A. P. Cechinel, ‘Photocatalytic pathway on the degradation of methylene blue from aqueous solutions using magnetite nanoparticles’, Journal of Cleaner Production, vol. 318, 128556, 2021.
- G. S. Ryu, Y. B. Lee, K. T. Koh and Y. S. Chung, ‘The mechanical properties of fly ash-based geopolymer concrete with alkaline activators’, Construction and Building Materials, vol. 47, pp. 409–418, 2013.
- H. Oudadesse, A. C. Derrien and M. Lefloch, ‘Infrared and nuclear magnetic resonance structural studies vs. thermal treatment of geopolymers/biphasic calcium phosphates’, Journal of Thermal Analysis and Calorimetry, vol. 82, pp. 323–329, 2005.
- S. K. Nath, S. Maitra, S. Mukherjee and S. Kumar, ‘Microstructural and morphological evolution of fly ash based geopolymers’, Construction and Building Materials, vol. 111, pp. 758–765, 2016.
- A. Maleki, M. Mohammad, Z. Emdadi, N. Asim, M. Azizi, J. Safaei, ‘Adsorbent materials based on a geopolymer paste for dye removal from aqueous solutions’, Arabian Journal of Chemistry, vol. 13, pp. 3017–3025, 2020.