Degradation of Humic Acid and Formation of Formaldehyde in PEROXONE Processes

PEROXONE(Ozone/Hydrogen Peroxide)공정에서의 부식산 분해 및 포름알데히드의 생성

  • Kim, Kei Woul (Department of Environmental Engineering, Kangwon National University) ;
  • Rhee, Dong Seok (Department of Environmental Engineering, Kangwon National University)
  • 김계월 (강원대학교 공과대학 환경공학과) ;
  • 이동석 (강원대학교 공과대학 환경공학과)
  • Received : 2000.12.29
  • Published : 2001.02.25

Abstract

This research was studied the action of the coupling ozone-hydrogen peroxide on aqueous humic acid. PEROXONE process is enhanced the generation of hydroxyl radicals which is effective for degradation of organic matters. Therefore the changes of $UV_{254}$ and TOC were investigated through the change of concentrations, injection time of $H_2O_2$, initial pH of aqueous humic acid and concentrations of radical savenger as $HCO_3{^-}$ in the PEROXONE processes. And the GC/ECD was used to detect the formaldehyde formed by ozonation of humic acid. From the experimental results, concentrations and injection time of $H_2O_2$ and initial pH in solution in the PEROXONE processes were very important for enhancing the efficiency of degradation in humic acid. The results indicated that removal efficiency of TOC was the highest when concentration of $H_2O_2$ was 5mg/L, injection time of $H_2O_2$ was 5 minutes and initial pH in solution was 10.5. And presence of alkalinity in solution was reduced the efficiency of treatment. The formaldehyde were formed less PEROXONE processes than only ozone. When initial pH in solution were changed from 3.5 to 10.5, the formaldehyde were formed highest concentration at pH 5.

Keywords

humic acid;ozonation by-products;formaldehyde;TOC;$UV_{254}$;PEROXONE process

Acknowledgement

Supported by : 디스코프코리아(주)

References

  1. 대한환경공학회지 '99 추계학술연구발표회 논문집(Ⅰ) 이동석;김계월
  2. Ozone Sci. & Eng. v.6 R,Brunet;M.M.Bourgigot;M.Dore
  3. EPA Guidance Manual-Alternative Disinfectant and Oxidants
  4. Chemosphere v.20 no.5 N,Katsuhiko;U.Hitoshi;N,Michiko;S.Yasuyoshi
  5. 강원대학교 산업기술연구소 논문집 v.19 산업기술연구 임용섭;이전주;이동석
  6. Journal of AWWA v.89 no.8 G.Q.Gagnon;S.D.J.Booth;S.Peldszus;D.Mutti;F.Smith;P.M.Huck
  7. Wat.Res. v.31 no.3 C.Volk;P.Roche;J.C.Joret;H.Paillard
  8. Environ.Sco.Technol v.34 no.3 R.J.Spanggord;D.Yao;T.Mill
  9. Environ.Sco.Technol v.33 no.11 M.D.Paciolla;G.Davies;S.A.Jansen
  10. 분석과학 v.13 no.2 이동석;정영림
  11. 강원대학교 산업기술연구소 논문집 v.18 산업기술연구 김계월;한미덕;신성희;이동석
  12. Osone Sci. & Eng. v.10 C.Yurteri;M.D.Gurol
  13. Environ.Sci.Technol v.16 J.Staehelin;J.Hoigne
  14. Journal of AWWA v.4 no.5 H.S.Weinberg;W.H.Glaze;S.W.Krasner;M.J.Sclimenti
  15. Ozone Sco. & Eng. v.9 W.H.Glaze;J.W.Kang;D.H.Ghapin
  16. Ann Arbor Science,Ann Arbor.Michigan handbook of osone technology and application J.Hoign;Rice RG, Netzer A(ed)
  17. Journal of Korean Society of Environmental Engineers v.22 no.3 B.Y.Ahn;D.S.Rhee;H.S.Shin
  18. Wat.Sci.Tech. v.32 no.7 H.Gulyas;R.von Bismarck;L.Hemmerling