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Membrane Filtration Applied to the Purification of Sugarcane Bagasse Mild Alkaline Extracts

Author

Listed:
  • Vincent Oriez

    (Laboratoire de Chimie Agro-Industrielle, INRAE, Toulouse INP, Université de Toulouse, 31029 Toulouse, France
    Centre RAPSODEE UMR CNRS 5302, Mines Albi, Université de Toulouse, Campus Jarlard, 81013 Albi, France)

  • Nga Thi-Thanh Pham

    (Laboratoire de Chimie Agro-Industrielle, INRAE, Toulouse INP, Université de Toulouse, 31029 Toulouse, France)

  • Jérôme Peydecastaing

    (Laboratoire de Chimie Agro-Industrielle, INRAE, Toulouse INP, Université de Toulouse, 31029 Toulouse, France)

  • Philippe Behra

    (Laboratoire de Chimie Agro-Industrielle, INRAE, Toulouse INP, Université de Toulouse, 31029 Toulouse, France)

  • Pierre-Yves Pontalier

    (Laboratoire de Chimie Agro-Industrielle, INRAE, Toulouse INP, Université de Toulouse, 31029 Toulouse, France)

Abstract

Sugarcane bagasse (SCB), a by-product of the sugar industry, is composed mainly of cellulose, hemicelluloses, and lignin, and can be used to replace petrochemical polymers in various applications. In this work, SCB was treated under mild alkaline conditions with 1.5% NaOH (m:v) and a solid:liquid ratio of 1:20 (m:v) at 60 °C, during 6 h. A 10 kDa polysulfone hollow fiber membrane was used for the purification of the extract in different filtration modes, namely concentration and diafiltration, and a combination of both modes. Permeate fluxes and rejection rates were evaluated at different transmembrane pressure (TMP) at the shear rate of 10,187 s –1 , at 40 °C. In concentration mode, increasing the volume reduction factor up to 6.1 led to a significant increase in the retention rates of acid-soluble lignin (ASL) and xylan, and a decrease in inorganic salt content in the retentate. In diafiltration mode, after 2.9 diavolumes, the acid-insoluble lignin (AIL) and xylan rejection rates drastically increased, as did the rejection rates of ash.

Suggested Citation

  • Vincent Oriez & Nga Thi-Thanh Pham & Jérôme Peydecastaing & Philippe Behra & Pierre-Yves Pontalier, 2023. "Membrane Filtration Applied to the Purification of Sugarcane Bagasse Mild Alkaline Extracts," Clean Technol., MDPI, vol. 5(2), pages 1-13, April.
    • Handle: RePEc:gam:jcltec:v:5:y:2023:i:2:p:27-530:d:1130595
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    References listed on IDEAS

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    1. Vincent Oriez & Jérôme Peydecastaing & Pierre-Yves Pontalier, 2020. "Lignocellulosic Biomass Mild Alkaline Fractionation and Resulting Extract Purification Processes: Conditions, Yields, and Purities," Clean Technol., MDPI, vol. 2(1), pages 1-25, February.
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