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Hydrotropic pretreatment on rice straw for bioethanol production

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  • Devendra, Leena P.
  • Pandey, Ashok

Abstract

The aim of this study was to investigate the effect of hydrotrope as a pretreatment process on rice straw for bioethanol production. Sodium cumene sulfonate and sodium xylene sulfonate (Na–X) were used as hydrotropes to delignify rice straw. Effects of biomass loading, time, temperature and hydrotrope concentration were studied for both the hydrotropes. There was no loss of cellulose & hemicellulose in the hydrotrope solution. Sodium cumene sulfonate could remove more than 50% of lignin from rice straw with 5% biomass loading at 121 °C for 1 h. Reusability of aqueous hydrotrope solution was demonstrated. Enzymatic digestibility of the hydrotrope pretreated rice straw was studied and evaluated for subsequent bioethanol production. The use of the hydrotrope for biomass pretreatment has the potential to mitigate the environmental impact of chemical pretreatment.

Suggested Citation

  • Devendra, Leena P. & Pandey, Ashok, 2016. "Hydrotropic pretreatment on rice straw for bioethanol production," Renewable Energy, Elsevier, vol. 98(C), pages 2-8.
    • Handle: RePEc:eee:renene:v:98:y:2016:i:c:p:2-8
    DOI: 10.1016/j.renene.2016.02.032
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    References listed on IDEAS

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    1. Sindhu, Raveendran & Kuttiraja, Mathiyazhakan & Binod, Parameswaran & Sukumaran, Rajeev Kumar & Pandey, Ashok, 2014. "Physicochemical characterization of alkali pretreated sugarcane tops and optimization of enzymatic saccharification using response surface methodology," Renewable Energy, Elsevier, vol. 62(C), pages 362-368.
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    Cited by:

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    2. Akhtar, Junaid & Idris, Ani, 2017. "Oil palm empty fruit bunches a promising substrate for succinic acid production via simultaneous saccharification and fermentation," Renewable Energy, Elsevier, vol. 114(PB), pages 917-923.
    3. Saha, Koel & R, Uma Maheswari & Sikder, Jaya & Chakraborty, Sudip & da Silva, Silvio Silverio & dos Santos, Julio Cesar, 2017. "Membranes as a tool to support biorefineries: Applications in enzymatic hydrolysis, fermentation and dehydration for bioethanol production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 74(C), pages 873-890.
    4. Abdolmaleki, Amir & Nabavizadeh, Sayed Sajad & Badbedast, Mehran, 2021. "1-(Carboxymethyl)pyridinium chloride as an acidic ionic liquid for rice straw effective pretreatment," Renewable Energy, Elsevier, vol. 177(C), pages 544-553.
    5. Mikulski, Dawid & Kłosowski, Grzegorz, 2023. "Cellulose hydrolysis and bioethanol production from various types of lignocellulosic biomass after microwave-assisted hydrotropic pretreatment," Renewable Energy, Elsevier, vol. 206(C), pages 168-179.
    6. Tsegaye, Bahiru & Balomajumder, Chandrajit & Roy, Partha, 2020. "Organosolv pretreatments of rice straw followed by microbial hydrolysis for efficient biofuel production," Renewable Energy, Elsevier, vol. 148(C), pages 923-934.
    7. Kłosowski, Grzegorz & Mikulski, Dawid, 2023. "Changes in various lignocellulose biomasses structure after microwave-assisted hydrotropic pretreatment," Renewable Energy, Elsevier, vol. 219(P1).

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