DOI QR코드

DOI QR Code

하수슬러지의 생물전기화학 혐기성소화에 대한 인가전압의 영향

Influence of Applied Voltage for Bioelectrochemical Anaerobic Digestion of Sewage Sludge

  • 투고 : 2015.09.22
  • 심사 : 2015.09.28
  • 발행 : 2015.09.30

초록

하수 슬러지의 생물전기화학 혐기성소화에 대한 인가전압의 영향을 0.2-0.4 V에서 수행하였다. 인가전압 0.3 V에서 pH와 VFAs는 7.32, 760 mg COD/L로 매우 안정한 값을 유지하였다. 이때 비메탄생성량은 $1.32L\;CH_4/L.d$이었으며, 바이오가스의 메탄함량은 73.8%로서 생물전기화학 혐기성소화조에 0.3 V의 낮은 전압을 인가하여도 혐기성 소화의 성능을 크게 향상 시킬 수 있었다. 0.4 V를 인가하였을 때, VFAs 성상의 포름산과 프로피온산 비율이 증가하였으며, 비메탄 생성량과 바이오 가스의 메탄함량은 각각 $1.24L\;CH_4/L.d$ 및 72.4%로 약간 감소하였다. 인가전압 0.2 V에서 pH는 6.3으로 감소하였으며, VFAs 농도는 5,684 mg COD/L로 크게 증가하였다. 또한, VFAs 구성성분 중에서 프로피온산과 뷰티르산의 비율이 급격히 증가하였고 비메탄생성량과 메탄함량이 크게 감소하였다. 인가전압 0.2 V에서 생물전기화학 혐기성 소화조의 성능 저하는 이산화탄소의 환원반응에 대한 열역학적인 전위구동력의 부족에 기인하였다.

키워드

혐기성;생물전기화학;인가전압;하수슬러지

참고문헌

  1. Song, Y. C., Kwon, S. J. and Woo, J. H., "Mesophilic and thermophilic temperature co-phase anaerobic digestion compared with single-stage mesophilic- and thermophilic digestion of sewage sludge," Water Res., 38(7), 1653-1662(2004). https://doi.org/10.1016/j.watres.2003.12.019
  2. Liu, H., Grot, S. and Logan, B. E., "Electrochemically assisted microbial production of hydrogen from acetate," Environ. Sci. Technol., 39(11), 4317-4320(2005). https://doi.org/10.1021/es050244p
  3. Sasaki, K., Morita, M., Sasaki, D., Hirano, S., Matsumoto, N., Watanabe, A., Ohmura, N. and Igarashi, Y., "A bioelectrochemical reactor containing carbon fiber texiles enables efficient methane fermentation from garbage slurry," Bioresour. Technol., 102(13), 6837-6842(2011). https://doi.org/10.1016/j.biortech.2011.04.022
  4. Tartakovsky, B., Mehta, P., Bourque, J. S. and Guiot, S. R., "Electrolysis-enhanced anaerobic digestion of wastewater," Bioresour. Technol., 102(10), 5685-5691(2011). https://doi.org/10.1016/j.biortech.2011.02.097
  5. Villano, M., Monaco, G., Aulenta, F. and Majone, M., "Electrochemically assisted methane production in a biofilm reactor," J. Power Sources, 196(22), 9467-9472(2011). https://doi.org/10.1016/j.jpowsour.2011.07.016
  6. Zhang, J., Zhang, Y., Quan, X. and Chen, S., "Effects of ferric iron on the anaerobic treatment and microbial biodiversity in a coupled microbial electrolysis cell (MEC) e Anaerobic reactor," Water Res., 47(15), 5719-5728(2013). https://doi.org/10.1016/j.watres.2013.06.056
  7. Rabaey, K. and Rozendal, R. A., "Microbial electrosynthesis - revisiting the electrical route for microbial production," Nat. Rev. Microbiol., 8, 706-716(2010). https://doi.org/10.1038/nrmicro2422
  8. Sun, M., Sheng, G. P., Zhang, L., Xia, C. R., Mu, Z. X., Liu, X. W., Wang, H. L., Yu, H. Q., Qi, R., Yu, T. and Yang, M., "An MEC-MFC-Coupled System for Biohydrogen Production from Acetate," Environ. Sci. Technol., 42(21), 8095-8109(2008). https://doi.org/10.1021/es801513c
  9. Cheng, S., Xing, D., Call, D. F. and Logan, B. E., "Direct biological conversion of electrical current into methane by electromethanogenesis," Environ. Sci. Technol., 43(10), 3953-3958(2009). https://doi.org/10.1021/es803531g
  10. Eerten-Jansen, M. C. A. A. V., Heijne, A. T., Buisman, C. J. N. and Hamelers, H. V. M., "Microbial electrolysiscells for production of methane from $CO_2$:long-termperformance and perspectives," Int. J. Energ. Res., 36(6), 809-819(2011).
  11. Noren, D. A. and Hoffman, M. A., "Clarifying the Butler-Volmer equation and related approximations for calculating activation losses in solid oxide fuel cell models," J. Power Sources, 152, 175-181(2005). https://doi.org/10.1016/j.jpowsour.2005.03.174
  12. Song, Y. C., Kim, D. S., Woo, J. H., Yoo, K. S., Chung, J. W. and Lee, C. Y., "Suface modification of the anode for performance improvement of microbial fuel cell, in Proceedings of the 2011 Co-conference, KOREA, EXCO, Daegu, pp. 162-164(2011).
  13. Baek, W. K. and Park, S. M., Electrochemistry: Science and Technology of Electrode Processes, 2rd ed, Cheong Moon Gak, Seoul, pp. 59-84(2003).
  14. Feng, Y., Zhang, Y., Chen, S. and Quan, X., "Enhanced production of methane from waste activated sludge by the combination of high-solid anaerobic digestion and microbial electrolysis cell with iron-graphite electrode," Chem. Eng. J., 259, 787-794(2015). https://doi.org/10.1016/j.cej.2014.08.048
  15. Commault, A. S., Lear, G., Packer, M. A. and Weld, R. J., "Influence of anode potentials on selection of Geobacter strains in microbial electrolysis cells," Bioresour. Technol., 139, 226-234(2013). https://doi.org/10.1016/j.biortech.2013.04.047
  16. Kundu, A., Sahu, J. N., Redzwan, G. and Hashim, M. A., "An overview of cathode material and catalysts suitable for generating hydrogen in microbial electrolysis cell," Int. J. Hydrogen Energ., 38(4), 1745-1757(2012).
  17. Wang, A., Liu, W., Cheng, S., Xing, D., Zhoud, J. and Logan, B. E., "Source of methane and methods to control its formation in single chamber microbial electrolysis cells," Int. J. Hydrogen Energ., 34(9), 3653-3658(2009). https://doi.org/10.1016/j.ijhydene.2009.03.005
  18. APHA, American Public Health Association, Standard Methods for the examination of water and wastewater, APHA, WWA, Washington, D. C.(2005).
  19. Takashima, M. and Tanaka, Y., "Acidic thermal post-treatment for enhancing anaerobic digestion of sewage sludge," J. Environ. Chem. Eng., 2(2), 773-779(2014). https://doi.org/10.1016/j.jece.2014.02.018
  20. Xu, H., Wang, K. and Holmes, D. E., "Bioelectrochemical removal of carbon dioxide ($CO_2$): An innovative method for biogas upgrading," Bioresour. Technol., 173, 392-398(2014). https://doi.org/10.1016/j.biortech.2014.09.127
  21. Guo, X., Liu, J. and Xiao, B., "Bioelectrochemical enhancement of hydrogen and methane production from the anaerobic digestion of sewage sludge in single-chamber membranefree microbial electrolysis cells," Int. J. Hydr. Energ., 38, 1342-1347(2013). https://doi.org/10.1016/j.ijhydene.2012.11.087
  22. Chen, C. C., Lin, C. Y. and Chang, J. S., "Kinetics of hydrogen production with continuous anaerobic cultures utilizing sucrose as the limiting substrate," Mircen J. Appl. Micro., 57(1), 56-64(2001).
  23. Capri, M. G. and Marais, G. V. R., "pH adjustment in anaerobic digestion," Water Res., 9(3), 307-313(1975). https://doi.org/10.1016/0043-1354(75)90052-4
  24. Munch, V. E. and Greenfield, P. F., "Estimating VFA concentration in prefermenters by measuring pH," Water Res., 32(8), 2431-2441(1998). https://doi.org/10.1016/S0043-1354(97)00469-7
  25. Padilla-Gasca, E., Lopez-Lopez, A. and Gallardo-Valdez, J., "Evaluation of Stability Factors in the Anaerobic Treatment of Slaughterhouse Wastewater," J. Bioremed. Biodegrad., 2(114), doi:10.4172/2155-6199.1000114(2011). https://doi.org/10.4172/2155-6199.1000114
  26. Hamelers, H. V. M., Heijne, A. T., Sleutels, T. H. J. A., Jeremiasse, A. W., Strik, D. P. B. T. B. and Buisman, C. J. N., "New applications and performance of bioelectrochemical systems," Mircen. J. Appl. Micro., 85(6), 1673-1685(2010).

피인용 문헌

  1. Evaluation of the Performance Parameters with a Semi-Continuously Fed and Mixed Anaerobic Reactor using Food Waste vol.12, pp.4, 2016, https://doi.org/10.7849/ksnre.2016.12.12.4.088
  2. Performance of Upflow Anaerobic Bioelectrochemical Reactor Compared to the Sludge Blanket Reactor for Acidic Distillery Wastewater Treatment vol.38, pp.6, 2016, https://doi.org/10.4491/KSEE.2016.38.6.279

과제정보

연구 과제 주관 기관 : 한국연구재단