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Batch anaerobic co-digestion of pig manure with dewatered sewage sludge under mesophilic conditions


  • Zhang, Wanqin
  • Wei, Quanyuan
  • Wu, Shubiao
  • Qi, Dandan
  • Li, Wei
  • Zuo, Zhuang
  • Dong, Renjie


The objective of this study was to investigate the characteristic of anaerobic co-digestion of pig manure (PM) with dewatered sewage sludge (DSS). The batch experiment was conducted under mesophilic (37±1°C) conditions at five different PM/DSS volatile solid (VS) ratios of 1:0, 2:1, 1:1, 1:2, and 0:1. The batch test evaluated the methane potential, methane production rate of the PM co-digestion with DSS at different mixing ratios. The first-order kinetic model and modified Gompertz model were also introduced to predict the methane yield and evaluate the kinetic parameters. The optimum mixing ratio of PM with DSS was 2:1 and the cumulative methane yield (CMY) was 315.8mL/gVSadded, which is greater by 82.4% than that of digesting DSS alone. This result might be due to the positive synergy of PM with DSS, which resulted in an active microbial activity and a higher hydrolytic capacity of DSS. The systems with co-digestion of PM and DSS was demonstrated to be more stable. The modified Gompertz model (R2: 0.976–0.999) showed a better fit to the experimental results and the calculated parameters indicated that the co-digestion of PM with DSS markedly improved the methane production rate and shortened the effective methane production time.

Suggested Citation

  • Zhang, Wanqin & Wei, Quanyuan & Wu, Shubiao & Qi, Dandan & Li, Wei & Zuo, Zhuang & Dong, Renjie, 2014. "Batch anaerobic co-digestion of pig manure with dewatered sewage sludge under mesophilic conditions," Applied Energy, Elsevier, vol. 128(C), pages 175-183.
  • Handle: RePEc:eee:appene:v:128:y:2014:i:c:p:175-183
    DOI: 10.1016/j.apenergy.2014.04.071

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    References listed on IDEAS

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    12. Jain, Siddharth & Jain, Shivani & Wolf, Ingo Tim & Lee, Jonathan & Tong, Yen Wah, 2015. "A comprehensive review on operating parameters and different pretreatment methodologies for anaerobic digestion of municipal solid waste," Renewable and Sustainable Energy Reviews, Elsevier, vol. 52(C), pages 142-154.
    13. Elsamadony, M. & Tawfik, A. & Suzuki, M., 2015. "Surfactant-enhanced biohydrogen production from organic fraction of municipal solid waste (OFMSW) via dry anaerobic digestion," Applied Energy, Elsevier, vol. 149(C), pages 272-282.
    14. repec:eee:energy:v:143:y:2018:i:c:p:488-499 is not listed on IDEAS
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    18. Zhen, Guangyin & Lu, Xueqin & Kobayashi, Takuro & Li, Yu-You & Xu, Kaiqin & Zhao, Youcai, 2015. "Mesophilic anaerobic co-digestion of waste activated sludge and Egeria densa: Performance assessment and kinetic analysis," Applied Energy, Elsevier, vol. 148(C), pages 78-86.


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