표면개질된 Pinus rigida 분말에 의한 하수의 인산염 제거

Phosphate Removal from Wastewater by Surface-Modified Pinus rigida Powder

  • 발행 : 2011.04.15

초록

This research was performed to evaluate the efficacy of phosphate removal from wastewater by surface-modified wood powder and to clarify the removal mechanisms. In this work, Pinus rigida which is abundant in Korea and has little economic value was used in preparation of the wood powder as a sorbent material. The experiments were carried out in 2 phases, isothermal adsorption test and column test. The results of adsorption test fitted well both the Langmuir and Freundlich isothermal equations. Adsorption capacity was highest with the bark powder followed by the mixed powder(50% bark powder and 50% woody powder) and woody powder. Phosphate removal efficiency was as high as 98% at initial phosphate concentration of 50mg/L. Specific surface area of the powder increased following the experiment and phosphate removal was speculated to occur through adsorption mechanism. Energy dispersive X-ray analysis(EDXA) revealed that the phosphate adsorbed onto the surface of the powder was in the form of strengite($FePO_{4}$).

키워드

참고문헌

  1. 박세근, 김하나, 양경민 (2007) Pinus densiflora 목질을 이용한 수용액 중의 Cu(II) 흡착, 상하수도학회지, 21(1), pp. 27-36.
  2. 백기현, 김동호, 윤승락 (1996) 수피에 의한 중금속 흡착(I), Korean J. Environ. Agric., 15(3), pp. 391-398.
  3. 양경민, 김영관 (2009) 폐수의 인산염제거를 위한 굴참나무 수피의 활용, 상하수도학회지, 23(1), pp. 113-119.
  4. 오미영, 김영관 (2006) 분말 소나무 수피를 이용한 수용액 중의 납이온 흡착, 상하수도학회지, 20(3), pp. 389-395.
  5. 정명선 (2004) Pinus rigida 분말을 이용한 하수처리 효율 개선, 강원대학교 대학원 박사학위논문.
  6. 환경부 (2007) 폐목재 재활용 활성화 대책
  7. APHA-AWWA-WEF (1998) Standard Methods for the Examination of Water and Wastewater, 20th edition, Washington D.C.
  8. Bailey, S.E., Olin, T.J., Brieka, R.M., and Adrian, D.D. (1999) A review of potentially low-cost sorbents for heavy metals, Water Res., 33(1), pp. 1706-1709. https://doi.org/10.1016/S0043-1354(98)00381-9
  9. Johansson, L. and Gustafsson, J.P. (2000) Phosphate removal using blast furnace slags and opoka - mechanisms, Water Res., 34(1), pp. 259-265. https://doi.org/10.1016/S0043-1354(99)00135-9
  10. Khadhraoui, M., Watanabe, T., and Kuroda, M. (2002) The effect of the physical structure of a porous Ca-based sorbent on its phosphorus removal capacity, Water Res., 36(15), pp. 3711-3718. https://doi.org/10.1016/S0043-1354(02)00096-9
  11. Palma, G., Freer, J., and Baeza, J. (2003) Removal of metal ions by modified Pinus radiata bark and tannins from water solutions, Water Res., 37(20), pp. 4974-4980. https://doi.org/10.1016/j.watres.2003.08.008
  12. Rowell, R.M. (2004) Handbook of Wood Chemistry and Wood Composites, CRC Press, Boca Raton, FL.
  13. Saeed, S., Akhter, M.W., and Iqbal, M. (2005) Removal and recovery of heavy metals from aqueous solutions using papaya wood as adsorbent, Sep. Purif. Technol., 45(1), pp. 25-31. https://doi.org/10.1016/j.seppur.2005.02.004
  14. Stumm, W. and Morgan, J.J. (1996) Aquatic Chemistry : chemical equilibria and rates in natural waters, New York, USA, Wiley Interscience.
  15. Zhao, Y. and Sengupta, A.K. (1998) Ultimate removal of phosphate from wastewater using a new class of polymeric ion exchangers, Water. Res., 32(25), pp. 1613-1625. https://doi.org/10.1016/S0043-1354(97)00371-0