상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제31권4호
  • /
  • Pages.281-287
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  • 2017
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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인제거용 흡착제로서 밀스케일로부터 선별된 마그네타이트 적용 연구

A study on the application of mill scale-derived magnetite particles for adsorptive removal of phosphate from wastewater

  • 투고 : 2017.07.17
  • 심사 : 2017.07.28
  • 발행 : 2017.08.29
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초록

Mill scale, an iron waste, was used to separate magnetite particles for the adsorption of phosphate from aqueous solution. Mill scale has a layered structure composed of wustite (FeO), magnetite ($Fe_3O_4$), and hematite ($Fe_2O_3$). Because magnetite shows the highest magnetic property among these iron oxides, it can be easily separated from the crushed mill scale particles. Several techniques were employed to characterize the separated particles. Mill scale-derived magnetite particles exhibited a strong uptake affinity to phosphate in a wide pH range of 3-7, with the maximum adsorptive removal of 100%, at the dosage of 1 g/L, pH 3-5. Langmuir isotherm model well described the equilibrium data, exhibiting maximum adsorption capacities for phosphate up to 4.95 and 8.79 mg/g at 298 and 308 K, respectively. From continuous operation of the packed-bed column reactor operated with different EBCT (empty bed contact time) and adsorbent particle size, the breakthrough of phosphate started after 8-22 days of operation. After regeneration of the column reactor with 0.1N NaOH solution, 95-98% of adsorbed phosphate could be detached from the column reactor.

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참고문헌

  1. Bruce, I. J., Taylor, J., Todd, M., Davies, M. J., Borioni, E., Sangregorio, C., and Sen, T. (2004). Synthesis, characterisation and application of silica-magnetite nanocomposites. J. Magnet. and Magnet. Mater., 284(1-3), 145-160. https://doi.org/10.1016/j.jmmm.2004.06.032
  2. Chen, R. Y., Yuen, W. Y. D. (2001). Oxide-Scale Structures Formed on Commercial Hot-Rolled Steel Strip and Their Formation Mechanisms, Oxid. of Metals, 56(1), 89-118. https://doi.org/10.1023/A:1010395419981
  3. Chun, H. C., Choi. Y. G. (2015) A Study on the mill scale Pretreatment and Magnetite Production for Phosphate Adsorption, J. Korean Society of Environ. Eng., 37(4), 246-252. https://doi.org/10.4491/KSEE.2015.37.4.246
  4. Daou, T. J., Begin-Colin, S., Greneche, J. M., Thomas F., Derory, A., Bernhardt, P., Legare, P., Pourroy, G. (2007). Phosphate adsorption properties of magnetite-based nanoparticles. Chem. of Mater., 19, 4494-4505. https://doi.org/10.1021/cm071046v
  5. Hamdi, N., and Srasra, E. (2012). Removal of phosphate ions from aqueous solution using Tunisian clays minerals and synthetic zeolite. J. Environ. Sci., 24(4), 617-623. https://doi.org/10.1016/S1001-0742(11)60791-2
  6. International Iron and Steel Institute. (1987). The management of steel industry by-products and waste. Brussels Committee on Environmenmtal Affairs.
  7. Jiang, C., Jia, L., He, Y., Zhang, B., Kirumba, G., and Xie, J. (2013). Adsorptive removal of phosphorus from aqueous solution using sponge iron and zeolite. J. Colloid and Interf. Sci., 402, 246-252. https://doi.org/10.1016/j.jcis.2013.03.057
  8. Legodi, M. A., de Waal, D. (2007). The preparation of magnetite, goethite, hematite and maghemite of pigment quality from mill scale iron waste, Dyes and Pigments, 78(1), 161-168.
  9. Lin, Y. F., Chen, H. W., Chen, Y. C., and Chiou, C. S. (2013). Application of magnetite modified with polyacrylamide to adsorb phosphate in aqueous solution. J. of the Taiwan Institute of Chem. Eng., 44(1), 45-51. https://doi.org/10.1016/j.jtice.2012.09.005
  10. Metaxas, M., Kasselouri-Rigopoulou, V., Galiatsatou, P., Konstantopoulou, C., Oikonomou, D. (2003). Thorium removal by different adsorbents. J. Hazard. Mater., 97(1-3), 71-82. https://doi.org/10.1016/S0304-3894(02)00245-5
  11. Moharami, S., and Jalali, M. (2013). Removal of phosphorus from aqueous solution by Iranian natural adsorbents. Chem. Eng. J., 223, 328-339. https://doi.org/10.1016/j.cej.2013.02.114
  12. Pan, B., Wu, J., Pan, B., Lv, L., Zhang, W., Xiao, L., Wang, X., Tao, X., and Zheng, S. (2009). Development of polymer-based nanosized hydrated ferric oxides (HFOs) for enhanced phosphate removal from waste effluents. Wat. Res., 43(17), 4421-4429. https://doi.org/10.1016/j.watres.2009.06.055
  13. Su, Y., Yang, W., Sun, W., Li, Q., and Shang, J. K. (2015). Synthesis of mesoporous cerium-zirconium binary oxide nanoadsorbents by a solvothermal process and their effective adsorption of phosphate from water. Chem. Eng. J., 268, 270-279. https://doi.org/10.1016/j.cej.2015.01.070
  14. Zach-Maor, A., Semiat, R., and Shemer, H. (2011). Adsorption-desorption mechanism of phosphate by immobilized nano-sized magnetite layer: Interface and bulk interactions. J. Colloid and Interf. Sci., 363(2), 608-614. https://doi.org/10.1016/j.jcis.2011.07.062