Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지

Characteristics of Ion Exchange of Phosphate using Layered Double Hydroxides in Advanced Wastewater Treatment

하수고도처리에서 층상이중수화물을 이용한 인산 이온교환 특성

  • Song, Ji-Hyun (Department of CiviI and Environmental Engineering, Sejong University) ;
  • Shin, Seung-Kyu (Department of CiviI and Environmental Engineering, Sejong University) ;
  • Lee, Sang-Hyup (Environment and Process Technology Division, Korea Institute of Science and Technology) ;
  • Park, Ki-Young (Department of Civil and Environmental System Engineering, Konkuk University)
  • 송지현 (세종대학교 토목환경공학과) ;
  • 신승규 (세종대학교 토목환경공학과) ;
  • 이상협 (한국과학기술연구원 환경공정연구부) ;
  • 박기영 (건국대학교 사회환경시스템공학과)
  • Received : 2006.02.23
  • Accepted : 2006.08.23
  • Published : 2006.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

The layered double hydroxide with the insertion of chloride ions (LDH-Cl), which was synthesized by the co-precipitation method, was applied to investigate the fundamental aspects of the absorptive agent for phosphate removal from wastewater. The adsorption capacity was best described by the Langmuir-FreundIich isotherm, and the estimated isotherm parameters indicate that the LDH-CI capacity for the phosphate removal is much higher than that observed using a natural adsorbent material such iron oxide tailing. The kinetic experiment also showed that the LDH-Cl adsorption reaction rapidly at the adsorptive rate of 0.55 mg-P/g-LDH/min, implying that this adsorbent can be of use in the full-scale applications. The pH had a minimal effect on the LDH adsorption capacity in the range of 5 to 11, although the capacity dropped at the low pHs because of the change in LDH surface properties. Furthermore, other anions such as $Cl^-$ and $NO_3{^-}$ commonly found in the wastewater streams insignificantly affected the phosphate removal efficiencies, while $HCO_3{^-}$ ions had a negative effect on the LDH adsorption capacity due to its high selectivity. The phosphate removal experiment using the actual secondary effluent from a wastewater treatment plant showed the similar decrease in adsorption capacity, indicating that the bicarbonate ions in the wastewater were competing with phosphate for the adsorptive site in the surface of the LDH-Cl. Overall, the synthetic adsorbent material, LDH-Cl, can be a feasible alternative over other conventional chemical agents, since the LDH-Cl exhibits the high phosphate removal capacity with the low sensitivity to other environmental conditions.

Keywords

Acknowledgement

Supported by : 수처리선진화사업단

References

  1. 강선흥, 김민수, 난각을 이용한 폐수중의 인 제거에 관한 연구, 상하수도 학회지, 18(2), pp. 174-180 (2004)
  2. 신항식, 남세용, 김미주, 층상이중수산화물 (Mg-Al-Cl체계)과 소성산물을 이용한 인산염 수용액에서의 인제거, 대한환경공학회지, 23(2), pp. 217-222 (2001)
  3. 이병천, 이관용, 이상협, 최용수, 박기영, 지르코늄 메조구조체를 이용한 수중의 인제거, 상하수도학회지, 19(4), pp.455-461 (2005a)
  4. 이상협, 이병천, 이관용, 최용수, 박기영, 지르코늄 메조기공 구조체의 합성조건 변화에 따른 인 제거 특성, 한국물환경 학회지, 21(6), pp. 637-642 (2005b)
  5. 이석우, 강문자, 문희정, 층상이중수산화물 (Mg-Al-$CO_3$ 체계) 의 물리 . 화학적 특성규명 및 소성된 시료의 크롬산이온 수용액에서의 재수화 반응, 대한화학회지, 39(8), pp.627-634 (1995)
  6. APHA, AWWA and WEF, Standard Methods for the Examination of Water and Wastewater, 20th ed. Washington, D.C. (1998)
  7. CEEP, http://WWW.ceep-phosphates.org (accessed Feb 2006)
  8. Chitrakar, R., Tezuka, S., Sonoda, A., Sakane, K., Ooi, K. and Hirotsu, T., Adsorption of Phosphate from Seawater on Calcined MgMn-layered Double Hydroxides, Journal of Colloid and Interface Science, 290(1), pp. 45-51 (2005) https://doi.org/10.1016/j.jcis.2005.04.025
  9. Chubar, N. I., Kanibolotskyy, V. A., Strelko, V. V., Gallios, G. G., Samanidou, V. F., Shaposhnikova, T. O., Milgrandt, V. G. and Zhuravlev, I. Z., Adsorption of Phosphate Ions on Novel Inorganic Ion Exchangers, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 255(1-3), pp. 55-63. (2005) https://doi.org/10.1016/j.colsurfa.2004.12.015
  10. Jang, H. and Kang, S.-H., Phosphorus Removal Using Cow Bone in Hydroxyapatite Crystallization, Water Research, 36(5), pp. 1324-1330 (2002) https://doi.org/10.1016/S0043-1354(01)00329-3
  11. Malherbe, F. and Besse, J-P., Investigating the Effects of Guest-Host Interactions on the Properties of Anion-Exchanged MgAl Hydrotalcites, Journal of Solid State Chemistry, 155(2), pp. 332-341 (2000) https://doi.org/10.1006/jssc.2000.8922
  12. Metcalf and Eddy, Inc., Wastewater engineering, Treatment and Reuse, 4th Ed. McGraw-Hill, New York, NY (2003)
  13. Seida, Y and Nakano, Y, Removal of phosphate by Layered double Hydroxides containing iron, Water Research, 36(5), pp. 1306-1312 (2002) https://doi.org/10.1016/S0043-1354(01)00340-2
  14. Shin, H.-S., Kim, M.-J., Nam, S.-Y. and Moon, H.-C., Phosphorus Removal by Hydrotalcite-like Compounds (htlcs), Water Science and Technology, 34(1-2), pp. 161-168 (1996)
  15. Vaccari, A., Clays and Catalysis: A Promising Future, Applied Clay Science, 14(4), pp. 161-198 (1999) https://doi.org/10.1016/S0169-1317(98)00058-1
  16. Zeng, L., Li, X. and Liu, J., Adsorptive Removal of Phosphate from Aqueous Solutions Using Iron Oxide Tailings, Water Research, 38(5), pp. 1318-1326 (2004) https://doi.org/10.1016/j.watres.2003.12.009