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Ethanol Production from the Mixture of Waste French Fries and Municipal Wastewater via Separate Hydrolysis and Fermentation

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Abstract

The potential of bioethanol generation using the mixture of waste French fries (WFF) and municipal wastewater (MWW) via separate hydrolysis and fermentation (SHF) was evaluated in this study. The effect of WFF substrate loading (SL, 10%, 16%, and 20%, w/v) on the SHF was also examined. Both glucose production and hydrolysis efficiency increased with increasing of SL from 10 to 16% and the maximum glucose yield of 0.236 g glucose/g WFF and hydrolysis efficiency of 91.9% were obtained at SL of 16%. However, the glucose production and hydrolysis efficiency decreased when the SL further increased to 20% due to the inhibition on enzyme caused by higher glucose production. The mixture hydrolysate was then used as feedstock for ethanol fermentation. The maximum ethanol production of 22.69 g/L was obtained from SL of 16%. The highest rate of glucose conversion to ethanol was 84.2%. The results demonstrated that the mixture of WFF and MWW could be used for ethanol production by the SHF.

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Data Availability

All data generated or analyzed during this study are included in this published article.

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Funding

This work was supported by National Key Research and Development Program-International Cooperation Project (2019YFE0124600); Zhejiang Education Department and Research Foundation from Hangzhou Dianzi University (2021R407075).

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Authors and Affiliations

  1. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China

    Xikai Chen, Xietian Zheng, Yanbo Pei, Jingang Huang, Junhong Tang & Wei Han

  2. School of Automation, The Belt and Road Information Research Institute, Hangzhou Dianzi University, Hangzhou, 310018, China

    Jingang Huang, Pingzhi Hou & Wei Han

Authors
  1. Xikai Chen
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  2. Xietian Zheng
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  3. Yanbo Pei
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  4. Jingang Huang
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  5. Junhong Tang
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  6. Pingzhi Hou
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  7. Wei Han
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by X Chen, X Zheng, and Y Pei. The first draft of the manuscript was written by X Chen and W Han. J Huang, J Tang, P Hou, and W Han commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Junhong Tang or Wei Han.

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This is an observational study. The XYZ Research Ethics Committee has confirmed that no ethical approval is required.

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Chen, X., Zheng, X., Pei, Y. et al. Ethanol Production from the Mixture of Waste French Fries and Municipal Wastewater via Separate Hydrolysis and Fermentation. Appl Biochem Biotechnol 194, 6007–6020 (2022). https://doi.org/10.1007/s12010-022-04084-3

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