Anaerobic Co-digestion of Giant Reed for Biogas Recovery

  • Zainab Ziad Ismail College of Engineering-University of Baghdad
  • Nazik Adnan Noori College of Engineering-University of Baghdad
Keywords: giant reed, biogas, digestion, alkali pretreatment, methane, chicken dung

Abstract

This study investigated the feasibility of anaerobic co-digestion of giant reed (GR) inoculated with waste manure as a co-substrate for biogas production. The performance of co-digestion was evaluated in 4 anaerobic digesters operated in batch mode at different conditions. The effects of alkali pretreatment with NaOH (4% w/v) solution, inoculum type, and thermal condition were studied. The results demonstrated that the alkali-pretreatment of GR enhanced the biogas generation by about 15% at mesophilic conditions. Thermophilic conditions enhanced the biogas recovery from both alkali-free and alkali pretreated GR by 15% and 127%, respectively. The kinetic study of the co-digestion process of GR for biogas recovery suggested a significant agreement between measured and predicted values obtained by Modified Gompertz Model with correlation coefficients ≥ 0.98 indicating favorable conditions for the co-digestion of inoculated GR.

 

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Published
2018-03-01
How to Cite
Ismail, Z. and Noori, N. (2018) “Anaerobic Co-digestion of Giant Reed for Biogas Recovery”, Journal of Engineering, 24(3), pp. 68-83. doi: 10.31026/j.eng.2018.03.06.

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