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Comparison of rumen microorganism and digester sludge dominated anaerobic digestion processes for aquatic plants

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  • Yue, Zheng-Bo
  • Wang, Jin
  • Liu, Xiao-Meng
  • Yu, Han-Qing

Abstract

Digester sludge and rumen fluid were explored as the inoculum sources of anaerobic reactors fed with aquatic plants. Methane and volatile fatty acid were both expressed in terms of chemical oxygen demand (COD) in this study. A higher product yield of 464.3 g COD/g total solid (TS) was achieved in the reactor inoculated with digester sludge compared to rumen fluid with a value of 362.8 g COD/g TS. In contrast, the maximum product formation rate was 120.4 and 207.2 mg COD/L/d in the reactors with digester sludge and rumen fluid, respectively. Steam-explosion pretreatment improved the product yield by 18.5% and 14.5% for reactors inoculated with rumen fluid and digester sludge, respectively, while the product formation rate was increased by 128.7% for the first case but had no significant change for the second case. This study indicated that the anaerobic reactor inoculated with rumen fluid had a higher product formation rate than that with digester sludge when feeding cellulose, untreated bulrush and steam exploded bulrush.

Suggested Citation

  • Yue, Zheng-Bo & Wang, Jin & Liu, Xiao-Meng & Yu, Han-Qing, 2012. "Comparison of rumen microorganism and digester sludge dominated anaerobic digestion processes for aquatic plants," Renewable Energy, Elsevier, vol. 46(C), pages 255-258.
    • Handle: RePEc:eee:renene:v:46:y:2012:i:c:p:255-258
    DOI: 10.1016/j.renene.2012.03.030
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    Cited by:

    1. Meng, Xingyao & Wang, Qingping & Zhao, Xixi & Cai, Yafan & Ma, Xuguang & Fu, Jingyi & Wang, Pan & Wang, Yongjing & Liu, Wei & Ren, Lianhai, 2023. "A review of the technologies used for preserving anaerobic digestion inoculum," Renewable and Sustainable Energy Reviews, Elsevier, vol. 188(C).
    2. Liang, Jinsong & Nabi, Mohammad & Zhang, Panyue & Zhang, Guangming & Cai, Yajing & Wang, Qingyan & Zhou, Zeyan & Ding, Yiran, 2020. "Promising biological conversion of lignocellulosic biomass to renewable energy with rumen microorganisms: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 134(C).
    3. Wenyao Jin & Xiaochen Xu & Fenglin Yang, 2018. "Application of Rumen Microorganisms for Enhancing Biogas Production of Corn Straw and Livestock Manure in a Pilot-Scale Anaerobic Digestion System: Performance and Microbial Community Analysis," Energies, MDPI, vol. 11(4), pages 1-17, April.
    4. Abdelsalam, E. & Samer, M. & Abdel-Hadi, M.A. & Hassan, H.E. & Badr, Y., 2018. "Influence of laser irradiation on rumen fluid for biogas production from dairy manure," Energy, Elsevier, vol. 163(C), pages 404-415.

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