Silica monolith with mesopore structure: synthesize, characterization and application for cadmium removal from wastewater

Document Type : Research Article

Authors

1 Chemical Engineering department, Yasouj University, Yasouj, Iran

2 Material Engineering Department, Yasouj University, Yasouj, I.R. Iran

3 Chemical engineering department, yasouj university, yasouj, Iran

Abstract

One of the most important issues in today's world is the pollution of water with toxic and dangerous metals. Cadmium is one of the toxic metals that enter the surface and groundwater through various industrial wastewaters. In this paper, polyethylene oxide-based silica monolith was synthesized with a uniform porous structure and was used to remove cadmium ions from the aqueous medium. The chemical and physical properties of silica monolith were characterized by SEM, BET, and FTIR techniques. The results of BET and SEM analysis showed that the monolith has a mesopore structure with a specific surface area of 543 m2g-1. The synthesized silica monolith was used as an adsorbent for cadmium removal in a batch adsorption process and the effects of operating parameters including pH, adsorbent concentration, cadmium initial concentration, and contact time were investigated. The Central Composite Design method was used to optimize the effects of operating parameters. The results of the experimental design showed the importance of pH and adsorbent concentration parameters. The analysis of equilibrium data indicated that the maximum adsorption capacity of the monolith for cadmium is 153 mg g-1. The kinetic data were analyzed with various models and results indicated the importance of chemical adsorption. The results of regeneration and reuse of monolith as an adsorbent showed that the synthesized monolith has a high ability to adsorb heavy metal ions from an aqueous solution and can be an option for water treatment at industrial scale.

Keywords

Main Subjects

References

[1] Hogan, M.C., "Heavy metal: encyclopedia of earth", National Council for Science and the Environment, Washington, 2010.
[2] Adriano D.C., "Trace elements in the terrestrial environment", Springer-Verlag, New York 1986.
[3] Appenroth K.J., "Definition of Heavy Metals and Their Role in Biological Systems", Soil Heavy Metals, Vol. 19, pp. 19-29, 2010.
[4] Zaini M.A.A., Okayama R., Machida M., "Adsorption of Aqueous Metal Ions on Cattle- manure- compost Based Activated Carbons", Journal of Hazardous Materials, Vol. 170, pp. 1119–1124, 2009.
[5] World Health Organization, "Guidelines for drinking water quality: recommendations", World Health Organization, Geneva, 2008.
[6] Hashemi Z., Sharififard H., Lashanizadegan A., "Grape stalks biomass as raw material for activated carbon production: synthesis, characterization and adsorption ability", Materials Research Express., Vol. 5, pp. 055603, 2018.
[7] D'Amore A., "Special topics on materials science and technology –The Italian panorama", CRC Press, Leiden, 2009.
[8] Dasgupta S., Nanoti A., Gupta P., Jena D., Goswami A.N., Garg M.O., "Carbon Di-Oxide Removal with Mesoporous Adsorbents in a Single Column Pressure Swing Adsorber", Separation Science and Technology, Vol. 44(16), pp. 3973-3983, 2009.
[9] Yan X., Zhang L., Zhang Y., Yang G., Yan Z., "Amine-Modified SBA-15: Effect of Pore Structure on the Performance for CO2 Capture",  Industrial & Engineering Chemistry Research, Vol. 50(6), pp. 3220-3226, 2011.
[10] Olea A., Sanz-Perez E.S., Arencibi, R., Sanz R., Calleja G., "Amino-functionalized pore-expended SBA-15 for CO2 adsorption", Adsorption, Vol. 19, pp. 589-600, 2013.
[11] Gargiulo N., Peluso A., Aprea P., Pepe F., Caputo D., "CO2 Adsorption on Polyethylene mine Functionalized SBA-15 Mesoporous Silica: Isotherms and Modeling", The Journal of Chemical & Engineering Data, Vol. 59(3), pp. 896-902, 2014.
[12] Sachse A., Galarneau A., Fajula F., Di Renzo F., Creux F., Coq B., "Functional silica monoliths with hierarchical uniform porosity as continuous flow catalytic reactors", Microporous and Mesoporous Materials, Vol. 140, pp. 58-68, 2011.
[13] Sharififard H., Pepe F., Soleimani M., Aprea P., Caputo D., "Iron- activated Carbon Nanocomposite: Synthesis, Characterization and Application for Lead Removal from Aqueous Solution", RSC Advances, Vol. 6, pp. 42845-42853, 2016.
[14] Montgomery D.C., "Design and analysis of experiments", John Wiley & Sons, New York 2017.
[15] Roso M., Lorenzetti A., Besco S., Monti M., Berti G., Modesti M.," Application of Empirical Modeling in Multi-layers Membrane Manufacturing", Computers & Chemical Engineering Vol. 35, pp. 2248-2256, 2011.
[16] Myers R.H., Montgomery D.C., "Response surface methodology: process and product optimization using designed experiments", John Wiley & Sons, New York, 2002.
[17] Mehrabi N., Soleimani M., Madadi Yeganeh M., Sharififard H., "Parameter Optimization for Nitrate Removal from Water Using Activated Carbon and Composite of Activated Carbon and Fe2O3 Nanoparticles", RSC Advances, Vol. 5, pp. 51470-51482, 2015.
[18] Lowell S., Shields J.E., Thomas M.A., Thommes M., "Characterization of porous solids and powders: surface area, pore size and density", Kluwer Academic Publishers, Dordrecht, 2004.
[19] Jain M., Garg V.K., Kadirvelu K., "Investigation of Cr (VI) Adsorption on to Chemically Treated Helianthus Annuus: Optimization Using Response Surface Methodology", Bioresource Technology, Vol. 102. pp. 600-605, 2011.
[20] Fischer R.A., "Statistical methods for research workers", Oliver &Boyd, London, 1925.
[21] Aghababaei A., Ncibi M.C., Sillanpaa M., "Optimization Removal of Oxytetracycline and Cadmium from Contaminated Waters Using Chemically Activated and Pyrolyzed Biochars from Forest and Wood- processing Residues", Bioresource Technology, Vol. 239, pp. 28-36, 2017.
[22] Fosso-Kankeu E., Mittal H., Waanders F., Sinha Ray S., "Thermodynamic Properties and Adsorption Behaviour of Hydrogel Nanocomposites for Cadmium Removal from Mine Effluents", Industrial & Engineering Chemistry Research, Vol. 48, pp. 151-161, 2017.
[23] Bhunia P., Chatterjee S., Rudra P., De S., "Chelating Polyacrylonitrile Beads for Removal of Lead and Cadmium from Wastewater", Separation and Purification Technology, Vol. 193, pp. 202-213, 2018.
[24] Bhanjana G., Dilbaghi N., Singhal N.K., Kim K.H., Kumar S., "Copper Oxide Nanoblades as Novel Adsorbent Material for Cadmium Removal", Ceramic International, Vol. 43(8), pp. 6075-6081, 2017.
[25] Roushani M., Saedi Z., Baghelani Y.M., "Removal of cadmium ions from aqueous solutions using TMU-16-NH2 metal organic framework", Environmental Nanotechnology, Monitoring and Management, Vol. 7, pp. 89-96, 2017.
Amirkabir Journal of Civil Engineering
Volume 53, Issue 4
July 2021
Pages 1323-1338

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