KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Influence of pH on the Hydrolysis and Acidogenesis of Food Waste

음식물쓰레기의 혐기성 가수분해 및 산발효에 대한 pH의 영향

Song, Young-Chae;Woo, Jung-Hui;Paik, Byeong-Cheon
송영채;우정희;백병천

  • Published : 2002.11.30

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Abstract

Influence of pH on the anaerobic hydrolysis and acidogenesis was investigated to determine the proper alkalinity requirement in the fermentation of food waste. Two completely mixed acidogenic reactors were used for the experiment. The food waste was obtained from a university dining hall and shattered after removal of impurities and screening with a sieve. The prepared food waste was intermittently fed into the reactor once a day and the organic loading rate was 5 g VS/L/d. During the experiments, dilution water was supplied continuously into the reactors and the flow rate was 4.29L/d. When the alkalinity in the dilution water was controlled to at 3,000 mg/L, 5,000 mg/L and 8,000mg/L as $CaCO_3$, the pH values of the acidogenic reactor were maintained around 5.3, 6.3 and 7.0, respectively, at steady state. The hydrolysis of particulate food waste was improved from 32.1% to 55.2% according to the increase of pH from 5.3 to 7.0. However, at lower pH around 5.3, the acidification percentage of hydrolyzed organics was higher as 82.2% than those of higher ranges of pH. The major components of VFAs produced from the acidogenesis of food waste were the short chain fatty acids such as acetic acid, propionic acid, and butyric acid. However, the contents of valeric and caproic acid were gradually increased according to the decrease of the pH from 7.0 to 5.3.

실험실 규모의 중온 산발효조 2기를 이용하여 음식물쓰레기의 효율적인 산발효에 필요한 적정 알칼리도 주입량을 결정하고, 가수분해 및 산발효에 대한 pH의 영향을 평가하기 위한 연구를 수행하였다. 희석수에 공급된 알칼리도의 농도가 3,000mg/L에서 5,000mg/L. 및 8,000mg/L as $CaCO_3$로 증가할 때 반응조내 평균 pH는 약 5.3, 6.3 및 7.0으로 증가하였다. 산발효조의 pH가 약 5.3까지 낮아짐에 따라 총 VFAs농도는 증가하였으나, 가수분해율은 점차 감소하였다. 생성된 VFAs커 주성분은 초산 등의 저급 지방산이었으나 pH가 낮아질 수록 고급지방산의 분율이 점차 증가하였다.

Keywords

References

  1. 전국폐기물 발생 및 처리현황 환경부
  2. Journal of Env. Eng. Effect of pH and VFA on Hydrolysis of Organic Solid Waste Adrie, V.;Sergey, K.;Heijo, S.;Bert, H.
  3. Internat J. Air Wat. Poll. v.9 Kinetics and Characteristics of Volatile Acid Production in Anaerobic Fermentation Process Andrews, J.E.;Pearson, E.A.
  4. Standard Methods for the Examination of Water and Wastewater A.P.H.A.;A.W.W.A.;W.E.F.
  5. Bioprocess Engineering v.18 Design of Acidogenic Reactors for the Anaerobic Treatment of the Organic Fraction of Solid Food Waste Argelier, S.;Delgenes, J.Ph.;Moletta, R. https://doi.org/10.1007/s004490050448
  6. Biotechnol. Lett. v.7 Anaerobic Hydrolysis of Beet Pulp- Discontinuous Experiments Arntz, H.J.;Stoppok, E.;Buchholz, K. https://doi.org/10.1007/BF01026681
  7. Appl. Microbiol. Biotechnol. v.24 Protein Degradation in Anaerobic Digestion:Influence of Volatile Fatty Acids and Carbohydrates on Hydrolysis and Acidogenic Fermentation of Gelatin Breure, A.M.;Mooijman, K.A.;van Andel, J.G. https://doi.org/10.1007/BF00294602
  8. Process Biochem. v.18 Recent advances in Anaerobic Digestion Technology Callander, I.J.;Barford, J.P.
  9. Water Research v.9 pH Adjustment in Anaerobic Digestion Capri, M.G.;Marais, G.V.R. https://doi.org/10.1016/0043-1354(75)90052-4
  10. J. WPCE. v.53 Solubilization of Particulate Organic Carbon During the Acid Phase of Anaerobic Digestion Eastman, J.A.;Ferguson, J.E.
  11. Proceedings: ASCE NatL Coni. Environ. Eng., Reno, Nev. The Effect of Operational Parameters on the Acid-phase Anaerobic Fermentation in the Biological Phosphorus Removal Process Elefsiniotis, P.;Oldham, W.K.
  12. Wastewater Engineering; Treatment, Disposal, and Reuse Geroge, T.;Franklin, L.B.
  13. Process Biochem v.13 Two Phase Anaerobic Digestion Ghosh, S.;Klass, D.L.
  14. Wat. Sic. Technol. v.45 no.10 Novel Anaerobic Process for the Recovery of Methane and Compost from Food Waste Han, S.K.;Shin. H.S.;Song, Y.C.;Lee, C.Y.;Kim, S.H.
  15. Bioresource Technology v.82 Selective Production of Organic Acids in Acid reactor by pH Control Horiuchi, J.I.;Shimizu, T.;Tada, K.;Kanno, T.;Kobayashi, M. https://doi.org/10.1016/S0960-8524(01)00195-X
  16. Appl. Microbiol. Biotechnol. v.24 The Effect of pH and Temperature Manipulation on Metabolite Composition During Acidogenesis in a Hybrid Anaerobic Digester Joubert, W.A.;Britz, T.J.
  17. Biotechnol. Bioeng. v.33 Acidogenic Fermentation of Lactose Kisaalita, W.S.;Pinder, K.L.;Lo, K.V. https://doi.org/10.1002/bit.260330516
  18. Biotechnol. Bioeng. v.24 Interactions Between Amino Acid-degrading Bacteria and Methanogenic Bacteria in Anaerobic Digestion Nagase, M.;Matsuo, T. https://doi.org/10.1002/bit.260241009
  19. Biotech. Bioeng. v.27 Characteristic of Carbohydrate Degradation and Rate Limiting Step in Anaerobic digestion Noike, T.;Endo, G.;Chang, J.E.;Yaduchi, J.I.;Matsumoto, J.I. https://doi.org/10.1002/bit.260271013
  20. Wat. Sci. Tech. v.25 no.7 Anaerobic Biodegrdability of the Organic Components of Municipal Solid Wastes(OFMSW) Peres, C.S.;Sanchez, C.R.;Marumoto, C.;Schmidell, C.
  21. High-rate Methane Fermentation of the Organic Solid Waste Song, Y.C.
  22. Proceeding of the 3rd World Water Congress Influence of Sulfate as an Electron Acceptor on Anaerobic Hydrolysis and Acidogenesis of Food Waste;e20945b Song, Y.C.;Lee, J.S.;Kim, M.K.;Kim, H.S.;Paik, B.C.;Sung, N.C.;Kim, J.K.;Kang, D.H.
  23. Process Biochemistry v.32 no.6 Definition of Optimal Conditions for the Hydrolysis and Acidogenisis of a Pharmaceutical Microbial Biomass Valerie, P.;Jean, P.D.;Michel, T.;Rene, M.;Bruno, V.;Pierre, C. https://doi.org/10.1016/S0032-9592(97)00006-X
  24. Wat. Res. v.16 Influence of Temperature on the Anaerobic Acidification of Glucose in a Mixed Culture Forming Part of a TWo-Stage Digestion Process Zoetemeyer, R.J.;Amoly, P.;Cohen, A.;Boelhouwer, C. https://doi.org/10.1016/0043-1354(82)90191-9
  25. Water Res. v.16 Product Inhibition in the Acid Fonning Stage of the Anaerobic Digestion Process Zoetemeyer, R.I.;Matthijsen, A.I.C.M.;Cohen, A.;Boelhouwer, C. https://doi.org/10.1016/0043-1354(82)90084-7