폐타이어를 흡착제로 한 카드뮴 함유 폐수 처리 특성

Adsorption Treatment Characteristics of Cadmium Ion Containing Wastewater Using Waste Tire as an Adsorbent

  • 백미화 (이화여자대학교 환경학과) ;
  • 김동수 (이화여자대학교 환경학과)
  • Baek, Mi-Hwa (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Dong-Su (Department of Environmental Science and Engineering, Ewha Womans University)
  • 투고 : 2005.12.07
  • 심사 : 2006.01.18
  • 발행 : 2006.05.30

초록

Adsorption features of $Cd^{2+}$ on waste tire particles have been investigated for the purpose of enhanced wastes recycling along with the development of an economic process for wastewater treatment. The isoelectric point of waste tire particles was found to be ca. pH 7 and the adsorbed amount of $Cd^{2+}$ was increased with pH under experimental conditions. The variation of the adsorption behavior of $Cd^{2+}$ with pH was well explained by the change of the electrokinetic potential of waste tire particles according to the pH. Adsorption of $Cd^{2+}$ was observed to reach its equilibrium within 45 minutes after the adsorption started under experimental conditions and followed the Freundlich model well. Kinetic analysis showed that the adsorption reaction of $Cd^{2+}$ was second order and thermodynamic estimation substantiated the endothermic behavior of $Cd^{2+}$ adsorption. As the amount of adsorbent increased, more adsorption of $Cd^{2+}$ was accomplished and the adsorption capacity of adsorbent was found to be enhanced by its pre-treatment with NaOH. Also, the adsorption of adsorbate was promoted as the ionic strength of wastewater was increased.

키워드

참고문헌

  1. 박주량, 이수구, 폐타이어 재활용을 위한 GRT/PE 복합체에 대한 연구(IV): 폐타이어의 분쇄방식에 따른 영향, 환경관리학회지, 10(3), pp. 193-202 (2004)
  2. Babel, S. and Kurniawan, T. A., Low-Cost Adsorbents for Heavy Metals Uptake from Contaminated Water: A Review, J. Hazardous Mater, B97, pp. 219-243 (2003)
  3. Hanzlik, J., Jehlicka, J., Sebek, O., Weishauptova, Z. and Machovic, V., Multi-Component Adsorption of Ag(I), Cd (II) and Cu(II) by Natural Carbonaceous Materials, Water Research, 38, pp. 2178-2184 (2004) https://doi.org/10.1016/j.watres.2004.01.037
  4. Kumar, U. and Bandyopadhyay, M., Fixed Bed Column Study for Cd(II) Removal from Wastewater using Treated Rice Husk, J. Hazardous Materials, in press (2005)
  5. Leyva-Ramos, R., Bernal-Jacome, L. A. and Aosta-Rodriguez, I., Adsorption of Cadmium(II) from Aqueous Solution on Natural and Oxidized Corncob, Separation and Purification Technology, 45, pp. 41-49 (2005) https://doi.org/10.1016/j.seppur.2005.02.005
  6. Li, Y. H., Wang, S., Luan, Z., Ding, J., Xu, C. and Wu, D., Adsorption of Cadmium(II) from Aqueous Solution by Surface Oxidized Carbon Nanotubes, Carbon, 41, pp. 1057-1062 (2003) https://doi.org/10.1016/S0008-6223(02)00440-2
  7. Lodeiro, P., Cordero, B., Bariada, J. L., Herrero, R. and Sastre de Vicente, M. E., Biosorption of Cadmium by Biomass of Brown Marine Macroalgae, Bioresource Technology, 96, pp. 1796-1803 (2005) https://doi.org/10.1016/j.biortech.2005.01.002
  8. Singh, K. K., Rastogi, R. and Hasan, S. H., Removal of Cadmium from Wastewater using Agricultural Waste 'rice polish', J. Hazardous Materials, A121, pp. 51-58 (2005)
  9. Srivastava, P., Singh, B. and Angove, M., Competitive Adsorption Behavior of Heavy Metals on Kaolinite, J. Colloid and Interface Science, 290, pp. 28-38 (2005) https://doi.org/10.1016/j.jcis.2005.04.036
  10. Tahir, S. S. and Rauf, N., Removal of Fe(II) from the Wastewater of a Galvanized Pipe Manufcturing Industry by Adsorption onto Bentonite Clay, J. Environmental Management, 73, pp. 285-292 (2004) https://doi.org/10.1016/j.jenvman.2004.06.009