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Technical assessment of bioenergy recovery from cotton stalks through anaerobic digestion process and the effects of inexpensive pre-treatments


  • Adl, Mehrdad
  • Sheng, Kuichuan
  • Gharibi, Arash


Methane yields from cotton stalks have been reported in the range of 0.022–0.150Nm3/kg-VS in the preceding studies. In this study, hydrothermal pre-treatment of cotton stalks was performed under atmospheric conditions prior to anaerobic digestion process through which, three agents were examined; hot water, dilute ammonia solution containing 2% NH3 (dry matter basis), and recycled liquid from anaerobic process. All three options increased methane yield but the highest results (over 0.200Nm3/kg-VS) were obtained by utilization of recycled process liquid (PL) under an adjusted ammonia content and C:N ratio, which was achieved by dilution of PL with water as well as application of stabilized swine sludge as a nitrogen rich inoculum. The energy balance evaluation of the overall process revealed that bioenergy recovery from pre-treated cotton stalks by anaerobic digestion is feasible and viable only at feed streams with above 10% solids content, methane yield above 0.175Nm3/kg-VS and with heat recovery from hydrothermal pre-treatment tank. A methane yield of 0.184Nm3/kg-VS was observed under semi-continuous feeding of PL treated stalks to a hybrid plug-flow pilot reactor.

Suggested Citation

  • Adl, Mehrdad & Sheng, Kuichuan & Gharibi, Arash, 2012. "Technical assessment of bioenergy recovery from cotton stalks through anaerobic digestion process and the effects of inexpensive pre-treatments," Applied Energy, Elsevier, vol. 93(C), pages 251-260.
  • Handle: RePEc:eee:appene:v:93:y:2012:i:c:p:251-260
    DOI: 10.1016/j.apenergy.2011.11.065

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    References listed on IDEAS

    1. Asam, Zaki-ul-Zaman & Poulsen, Tjalfe Gorm & Nizami, Abdul-Sattar & Rafique, Rashad & Kiely, Ger & Murphy, Jerry D., 2011. "How can we improve biomethane production per unit of feedstock in biogas plants?," Applied Energy, Elsevier, vol. 88(6), pages 2013-2018, June.
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    Cited by:

    1. Bateni, Hamed & Karimi, Keikhosro & Zamani, Akram & Benakashani, Fatemeh, 2014. "Castor plant for biodiesel, biogas, and ethanol production with a biorefinery processing perspective," Applied Energy, Elsevier, vol. 136(C), pages 14-22.
    2. Zheng, Zehui & Liu, Jinhuan & Yuan, Xufeng & Wang, Xiaofen & Zhu, Wanbin & Yang, Fuyu & Cui, Zongjun, 2015. "Effect of dairy manure to switchgrass co-digestion ratio on methane production and the bacterial community in batch anaerobic digestion," Applied Energy, Elsevier, vol. 151(C), pages 249-257.
    3. Li, Kun & Liu, Ronghou & Sun, Chen, 2016. "A review of methane production from agricultural residues in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 857-865.
    4. Li, Dong & Huang, Xianbo & Wang, Qingjing & Yuan, Yuexiang & Yan, Zhiying & Li, Zhidong & Huang, Yajun & Liu, Xiaofeng, 2016. "Kinetics of methane production and hydrolysis in anaerobic digestion of corn stover," Energy, Elsevier, vol. 102(C), pages 1-9.
    5. Raheem, Abdur & Hassan, Mohammad Yusri & Shakoor, Rabia, 2016. "Bioenergy from anaerobic digestion in Pakistan: Potential, development and prospects," Renewable and Sustainable Energy Reviews, Elsevier, vol. 59(C), pages 264-275.
    6. repec:eee:rensus:v:77:y:2017:i:c:p:718-730 is not listed on IDEAS
    7. Koch, Konrad & Drewes, Jörg E., 2014. "Alternative approach to estimate the hydrolysis rate constant of particulate material from batch data," Applied Energy, Elsevier, vol. 120(C), pages 11-15.
    8. repec:eee:energy:v:141:y:2017:i:c:p:1695-1704 is not listed on IDEAS
    9. Passos, Fabiana & Solé, Maria & García, Joan & Ferrer, Ivet, 2013. "Biogas production from microalgae grown in wastewater: Effect of microwave pretreatment," Applied Energy, Elsevier, vol. 108(C), pages 168-175.
    10. Jurado, Esperanza & Skiadas, Ioannis V. & Gavala, Hariklia N., 2013. "Enhanced methane productivity from manure fibers by aqueous ammonia soaking pretreatment," Applied Energy, Elsevier, vol. 109(C), pages 104-111.


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