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Bioconversion of municipal solid waste to glucose for bio-ethanol production

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Abstract

Selected biodegradable municipal solid waste fractions were subjected to fifteen different pre-hydrolysis treatments to obtain the highest glucose yield for bio-ethanol production. Pre-hydrolysis treatments consisted of dilute acid (H2SO4, HNO3 or HCl, 1 and 4%, 180 min, 60°C), steam treatment (121 and 134°C, 15 min), microwave treatment (700 W, 2 min) or a combination of two of them. Enzymatic hydrolysis was carried out with Trichoderma reesei and Trichoderma viride (10 and 60 FPU g−1 substrate). Glucose yields were compared using a factorial experimental design. The highest glucose yield (72.80%) was obtained with a pre-hydrolysis treatment consisting of H2SO4 at 1% concentration, followed by steam treatment at 121°C, and enzymatic hydrolysis with Trichoderma viride at 60 FPU g−1 substrate. The contribution of enzyme loading and acid concentration was significantly higher (49.39 and 47.70%, respectively), than the contribution of temperature during steam treatment (0.13%) to the glucose yield.

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Acknowledgments

This research was undertaken at the Department of Civil and Environmental Engineering, Laboratory of Environmental Engineering, Chadwick Building, University College London, UK, AL acknowledges the financial support provided by the Dorothy Hodgkin Postgraduate Award, and the technical support received at Wolfson Institute and Department of Biochemical Engineering at the University College London.

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Author notes

  1. Blanca Antizar-Ladislao

    Present address: Department of Water and Environmental Science and Technology, Universidad de Cantabria, Bulevard Ronda Rufino Peón, 254, 39316, Torrelavega, Cantabria, Spain

Authors and Affiliations

  1. Department of Civil and Environmental Engineering, University College London, Gower Street, London, WC1E 6BT, UK

    Aiduan Li, Blanca Antizar-Ladislao & Majeda Khraisheh

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  1. Aiduan Li
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  2. Blanca Antizar-Ladislao
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  3. Majeda Khraisheh
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Correspondence to Blanca Antizar-Ladislao.

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Li, A., Antizar-Ladislao, B. & Khraisheh, M. Bioconversion of municipal solid waste to glucose for bio-ethanol production. Bioprocess Biosyst Eng 30, 189–196 (2007). https://doi.org/10.1007/s00449-007-0114-3

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