Desorption of Reactive Red 198 from activated carbon prepared from walnut shells: effects of temperature, sodium carbonate concentration and organic solvent dose

Alimohamadi, Zohreh; Younesi, Habibollah; Bahramifar, Nader

doi:10.22104/aet.2017.432

Desorption of Reactive Red 198 from activated carbon prepared from walnut shells: effects of temperature, sodium carbonate concentration and organic solvent dose

Document Type : Research Paper

Authors

Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran

10.22104/aet.2017.432

Abstract

This study investigated the effect of temperature, different concentrations of sodium carbonate,and the dose of organic solvent on the desorption of Reactive Red 198 dye from dye-saturated activated carbon using batch and continuous systems. The results of the batch desorption test showed 60% acetone in water as the optimum amount. However, when the concentration of sodium carbonate was raised, the dye desorption percentage increased from 26% to 42% due to economic considerations; 15 mg/L of sodium carbonate was selected to continue the processof desorption. Increasing the desorption temperature can improve the dye desorption efficiency.According to the column test results, dye desorption concentration decreased gradually with the passing of time. The column test results showed that desorption efficiency and the percentage of dye adsorbed decreased; however, it seemed to stabilize after three repeated adsorption/desorption cycles. The repeated adsorption–desorption column tests (3 cycles) showed that the activated carbon which was prepared from walnut shell was a suitable and economical adsorbent for dye removal.

Keywords

Main Subjects

water and wastewater treatment

References

[1] Çolak, F., Atar, N., Olgun, A. (2009). Biosorption of acidic dyes from aqueous solution by Paenibacillus macerans: Kinetic, thermodynamic and equilibrium studies. Chemical engineering journal, 150(1), 122-130.

[2] Dizge, N., Aydiner, C., Demirbas, E., Kobya, M., Kara, S. (2008). Adsorption of reactive dyes from aqueous solutions by fly ash: Kinetic and equilibrium studies. Journal of hazardous materials, 150(3), 737-746.

[3] Santhy, K., Selvapathy, P. (2006). Removal of reactive dyes from wastewater by adsorption on coir pith activated carbon. Bioresource technology, 97(11), 1329-1336.

[4] Crini, G., Badot, P. M. (2008). Application of chitosan, a natural aminopolysaccharide, for dye removal from aqueous solutions by adsorption processes using batch studies: a review of recent literature. Progress in polymer science, 33(4), 399-447.

[5] Sulak, M. T., Demirbas, E., Kobya, M. (2007). Removal of Astrazon Yellow 7GL from aqueous solutions by adsorption onto wheat bran. Bioresource technology, 98(13), 2590-2598.

[6] Karcher, S., Kornmüller, A., Jekel, M. (2002). Anion exchange resins for removal of reactive dyes from textile wastewaters. Water research, 36(19), 4717-4724.

[7] Lillo-Ródenas, M. A., Cazorla-Amorós, D., Linares-Solano, A. (2005). Behaviour of activated carbons with different pore size distributions and surface oxygen groups for benzene and toluene adsorption at low concentrations. Carbon, 43(8), 1758-1767.

[8] Yagmur, E., Ozmak, M., Aktas, Z. (2008). A novel method for production of activated carbon from waste tea by chemical activation with microwave energy. Fuel, 87(15), 3278-3285.

[9] Alimohammadi, Z., Younesi, H., Bahramifar, N. (2016). Batch and Column Adsorption of reactive Red 198 from textile industry effluent by microporous activated carbon developed from walnut shells. Waste and biomass valorization, 7(5), 1255-1270.

[10] Salleh, M. A. M., Mahmoud, D. K., Karim, W. A. W. A., Idris, A. (2011). Cationic and anionic dye adsorption by agricultural solid wastes: a comprehensive review. Desalination, 280(1), 1-13.

[11] Auta, M., Hameed, B. H. (2011). Preparation of waste tea activated carbon using potassium acetate as an activating agent for adsorption of Acid Blue 25 dye. Chemical engineering journal, 171(2), 502-509.

[12] Lu, P. J., Lin, H. C., Yu, W. T., Chern, J. M. (2011). Chemical regeneration of activated carbon used for dye adsorption. Journal of the Taiwan institute of chemical engineers, 42(2), 305-311.

[13] Cao, J. S., Lin, J. X., Fang, F., Zhang, M. T., Hu, Z. R. (2014). A new absorbent by modifying walnut shell for the removal of anionic dye: kinetic and thermodynamic studies. Bioresource technology, 163, 199-205.

[14] Liu, C. H., Wu, J. S., Chiu, H. C., Suen, S. Y., Chu, K. H. (2007). Removal of anionic reactive dyes from water using anion exchange membranes as adsorbers. Water research, 41(7), 1491-1500.

[15] Mondal, M. K. (2009). Removal of Pb (II) ions from aqueous solution using activated tea waste: Adsorption on a fixed-bed column. Journal of environmental management, 90(11), 3266-3271.