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Effects of pretreatment methods on cassava wastewater for biohydrogen production optimization

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  • Leaño, E.P.
  • Babel, S.

Abstract

Batch production of biohydrogen from cassava wastewater pretreated with (i) sonication, (ii) OPTIMASH BG® (enzyme), and (iii) α-amylase (enzyme) were investigated using anaerobic seed sludge subjected to heat pretreatment at 105 °C for 90 min. Hydrogen yield at pH 7.0 for cassava wastewater pretreated with sonication for 45 min using anaerobic seed sludge was 0.913 mol H2/g COD. Results from pretreatment with OPTIMASH BG® at 0.20% and pH 7 showed a hydrogen yield of 4.24 mol H2/g COD. Superior results were obtained when the wastewater was pretreated with α-amylase at 0.20% at pH 7 with a hydrogen yield of 5.02 mol H2/g COD. In all cases, no methane production was observed when using heat-treated sludge as seed inoculum. Percentage COD removal was found to be highest (60%) using α-amylase as pretreatment followed by OPTIMASH BG® at 54% and sonication (40% reduction rate). Results further suggested that cassava wastewater is one of the potential sources of renewable biomass to produce hydrogen.

Suggested Citation

  • Leaño, E.P. & Babel, S., 2012. "Effects of pretreatment methods on cassava wastewater for biohydrogen production optimization," Renewable Energy, Elsevier, vol. 39(1), pages 339-346.
    • Handle: RePEc:eee:renene:v:39:y:2012:i:1:p:339-346
    DOI: 10.1016/j.renene.2011.08.030
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    Cited by:

    1. Karim, Ahasanul & Islam, M. Amirul & Mishra, Puranjan & Yousuf, Abu & Faizal, Che Ku Mohammad & Khan, Md. Maksudur Rahman, 2021. "Technical difficulties of mixed culture driven waste biomass-based biohydrogen production: Sustainability of current pretreatment techniques and future prospective," Renewable and Sustainable Energy Reviews, Elsevier, vol. 151(C).
    2. Lucas, S.D.M. & Peixoto, G. & Mockaitis, G. & Zaiat, M. & Gomes, S.D., 2015. "Energy recovery from agro-industrial wastewaters through biohydrogen production: Kinetic evaluation and technological feasibility," Renewable Energy, Elsevier, vol. 75(C), pages 496-504.
    3. Prabakar, Desika & Manimudi, Varshini T. & Suvetha K, Subha & Sampath, Swetha & Mahapatra, Durga Madhab & Rajendran, Karthik & Pugazhendhi, Arivalagan, 2018. "Advanced biohydrogen production using pretreated industrial waste: Outlook and prospects," Renewable and Sustainable Energy Reviews, Elsevier, vol. 96(C), pages 306-324.
    4. Bertasini, Davide & Battista, Federico & Rizzioli, Fabio & Frison, Nicola & Bolzonella, David, 2023. "Decarbonization of the European natural gas grid using hydrogen and methane biologically produced from organic waste: A critical overview," Renewable Energy, Elsevier, vol. 206(C), pages 386-396.

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