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Pretreatment of Laminaria japonica for bioethanol production with extremely low acid concentration

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  • Lee, Ji Ye
  • Kim, Young Soo
  • Um, Byung Hwan
  • Oh, KyeongKeun

Abstract

The conversion of cellulose hydrolysis was investigated in batch reactors from brown macro-algae under extremely low acid (ELA) pretreatment conditions. The brown macro-algae of Laminaria japonica were conducted for increasing glucan content as an aqua-biomass feedstock. The investigated ELA pretreatment conditions in this study were as follows; the reaction temperature of 150–180 °C, the reaction time of 5–20 min, and sulfuric acid concentrations of 0.02–0.14%. The maximum glucan content of 29.09%, which was four-fold higher than that of the raw L. japonica was obtained after the ELA pretreatment under the optimal condition with sulfuric acid of 0.06% at the temperature of 170 °C for 15 min. In addition, glucan content in solid residue, solid remaining, and the amount of decomposed products in hydrolyzate through ELA pretreatment of L. japonica were compared with those of hot water treatment. Significant enhancement on glucan fraction and enzymatic digestibility of the pretreated L. japonica could be achieved through the ELA pretreatment.

Suggested Citation

  • Lee, Ji Ye & Kim, Young Soo & Um, Byung Hwan & Oh, KyeongKeun, 2013. "Pretreatment of Laminaria japonica for bioethanol production with extremely low acid concentration," Renewable Energy, Elsevier, vol. 54(C), pages 196-200.
    • Handle: RePEc:eee:renene:v:54:y:2013:i:c:p:196-200
    DOI: 10.1016/j.renene.2012.08.025
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    References listed on IDEAS

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    1. Subhadra, Bobban & Edwards, Mark, 2010. "An integrated renewable energy park approach for algal biofuel production in United States," Energy Policy, Elsevier, vol. 38(9), pages 4897-4902, September.
    2. Singh, Anoop & Olsen, Stig Irving, 2011. "A critical review of biochemical conversion, sustainability and life cycle assessment of algal biofuels," Applied Energy, Elsevier, vol. 88(10), pages 3548-3555.
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    1. Kazemi Shariat Panahi, Hamed & Dehhaghi, Mona & Aghbashlo, Mortaza & Karimi, Keikhosro & Tabatabaei, Meisam, 2019. "Shifting fuel feedstock from oil wells to sea: Iran outlook and potential for biofuel production from brown macroalgae (ochrophyta; phaeophyceae)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 112(C), pages 626-642.
    2. Liu, Zhen & Li, Longfei & Liu, Cheng & Xu, Airong, 2017. "Saccharification of cellulose in the ionic liquids and glucose recovery," Renewable Energy, Elsevier, vol. 106(C), pages 99-102.

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