Development of eco-friendly and low cost process for the production of bioethanol

• Project/Area Number: 17K00669
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design and evaluation of sustainable and environmental conscious system
• Research Institution: The University of Tokushima
• Principal Investigator: SASAKI Chizuru 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 准教授 (50452652)
• Co-Investigator(Kenkyū-buntansha): ALCANTARA J.RAFAEL (アルカンタラ アビラ・ラファエル) 京都大学, 工学研究科, 講師 (50709219)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: リグノセルロース / バイオマス / 加水分解 / 水熱処理 / バイオエタノール / 蒸留 / セルロース / 糖化 / グルコース

Outline of Final Research Achievements

To produce bioethanol at low cost and low energy, direct hydrolysis of cellulose (cotton towel) to glucose was investigated using microwave-assisted treatment. We found the optimal direct hydrolysis condition using diluted sulfuric acid as catalyst. Next, novel direct hydrolysis method for cotton towel was investigated using microwave combined with impregnation in concentrated fulsufic acid before the micowave treatment. This combination method proposed had some advantages such as higher hydrolysis glucose recovery yield and low input energy. Moreover, extractive distillation of bioethanol with addiive was investigated, ethanol was concentrated at high purity (98mol%).

Academic Significance and Societal Importance of the Research Achievements

リグノセルロース系バイオマスを原料としたバイオエタノール生産プロセスの実現に向けて、環境低負荷やコストダウンに繋がる研究の進展に寄与した。セルロースを酵素加水分解する方法の代替法として、水熱処理による直接糖化法を開発し、また、バイオエタノールの精製法として環境低負荷な物質を添加する方法を見出した。

Research Products

• [Journal Article] Microwave-assisted hydrolysis of cotton waste to glucose in combination with the concentrated sulfuric acid impregnation method (2020)
  • Author(s): Chizuru Sasaki, Tomoya Nakagawa, Chikako Asada, Yoshitoshi Nakamura
  • Journal Title: Waste and Biomass Valorization Volume: -
  • Peer Reviewed
• [Journal Article] Ethanol Production from Sugarcane Bagasse Using Pressurized Microwave Treatment with Inorganic Salts and Salt-Tolerant Yeast (2020)
  • Author(s): Chikako Asada, Chizuru Sasaki, Chihiro Oka and Yoshitoshi Nakamura
  • Journal Title: Waste and Biomass Valorization Volume: 11 Pages: 2001-2007
  • Peer Reviewed
• [Journal Article] Microwave-assisted glucose production from bode (Styrax tonkinensis) woody biomass for bioethanol production (2019)
  • Author(s): Chizuru Sasaki, Haruka Negoro, Chikako Asada, Yoshitoshi Nakamura
  • Journal Title: Journal of Material Cycles and Waste Management Volume: 21 Pages: 201-204
  • Peer Reviewed
• [Journal Article] Glucose and Valuable chemicals production from cotton waste using hydrothermal method (2019)
  • Author(s): Chizuru Sasaki, Ami Kiyokawa, Chikako Asada and Yoshitoshi Nakamura
  • Journal Title: Waste and Biomass Valorization Volume: 10 Pages: 599-607
  • Peer Reviewed
• [Journal Article] Production of cellulose nanofibers from Aspen and Bode chopsticks using a high temperature and high pressure steam treatment combined with milling (2018)
  • Author(s): A. Suzuki, C. Sasaki, C. Asada, Y. Nakamura
  • Journal Title: Carbohydrate Polymers Volume: - Pages: 303-310
  • DOI: 10.1016/j.carbpol.2018.04.047
  • Peer Reviewed
• [Journal Article] Total Biorefinery Process of Lignocellulosic Waste Using Steam Explosion Followed by Water and Acetone Extractions (2018)
  • Author(s): Asada C.、Sasaki C.、Suzuki A.、Nakamura Y.
  • Journal Title: Waste and Biomass Valorization Volume: 印刷中 Issue: 12 Pages: 2423-2432
  • DOI: 10.1007/s12649-017-0157-x
  • Peer Reviewed
• [Journal Article] Glucose and Valuable Chemicals Production from Cotton Waste Using Hydrothermal Method (2018)
  • Author(s): Chizuru Sasaki, Ami Kiyokawa, Chikako Asada and Yoshitoshi Nakamura
  • Journal Title: Waste and Biomass Valorization Volume: 印刷中 Issue: 3 Pages: 599-607
  • DOI: 10.1007/s12649-017-0084-x
  • Peer Reviewed
• [Journal Article] High concentration ethanol production from mixed softwood sawdust waste (2018)
  • Author(s): Chikako Asada, Chizuru Sasaki, Yoshitoshi Nakamura
  • Journal Title: Waste and Biomass Valorization Volume: 印刷中 Issue: 2 Pages: 433-439
  • DOI: 10.1007/s12649-017-0073-0
  • Peer Reviewed
• [Journal Article] Characterization of cellulose nanofiber from steam exploded Japanese cedar (2017)
  • Author(s): Akihiro Suzuki, Chizuru Sasaki, Chikako Asada, Yoshitoshi Nakamura
  • Journal Title: BioResources Volume: 12 Pages: 7628-7641
  • Peer Reviewed
• [Presentation] 塩による効果を用いたエタノール精製プロセスの開発 (2020)
  • Author(s): 中村友紀, アルカンタラアヴィラ ヘスース ラファエル, 佐々木千鶴
  • Organizer: 化学工学会第85年会
• [Presentation] 塩含有溶媒を用いた抽出蒸留によるバイオエタノール脱水プロセスに関する研究 (2020)
  • Author(s): トマ ガブリエル, アルカンタラアヴィラ ヘスース ラファエル, 佐々木千鶴
  • Organizer: 化学工学会第85年会
• [Presentation] アルカリ凍結融解と水熱処理を併用した木質バイオマス中のセルロースの糖化に関する研究 (2019)
  • Author(s): 小田島海, 佐々木千鶴, 淺田元子, 中村嘉利
  • Organizer: 2019年度日本化学会中国四国支部大会徳島大会
• [Presentation] 高活性水蒸気処理を用いたセルロースナノファイバーの製造とバイオマスコンポジットへの応用 (2018)
  • Author(s): 橋本和紀、淺田元子、佐々木千鶴、中村嘉利
  • Organizer: 生物工学会
• [Presentation] 高活性水蒸気処理と粉砕処理を併用したバイオリファイナリーシステムの開発 (2018)
  • Author(s): 鈴木昭浩、淺田元子、佐々木千鶴、中村嘉利
  • Organizer: 生物工学会
• [Presentation] Synthesis of ecomaterial from plant biomass and its physical properties (2017)
  • Author(s): Akihiro Suzuki, Chikako Asada, Chizuru Sasaki, Yoshitoshi Nakamura
  • Organizer: International Conference on Ecomaterials
  • Int'l Joint Research
• [Presentation] Comparison of steam explosion and steaming followed by milling treatment for bioethanol production from woody baiomss (2017)
  • Author(s): Yuta Danura, Chikako Asada, Chizuru Sasaki, Yoshitoshi Nakamura
  • Organizer: International Conference on Ecomaterials
  • Int'l Joint Research
• [Presentation] Organosolv lignin extracted from hydrolyzed residue of steam exploded hardwood: a potential candidate for epoxy resin (2017)
  • Author(s): Takuya Yamamoto, Chikako Asada, Chizuru Sasaki, Yoshitoshi Nakamura
  • Organizer: International Conference on Ecomaterials
  • Int'l Joint Research
• [Presentation] Glucose production from cotton-waste using hydrothermal methods (2017)
  • Author(s): Chizuru Sasaki, Chikako Asada, Yoshitoshi Nakamura
  • Organizer: The 4th International Cellullose Conference
  • Int'l Joint Research
• [Presentation] バイオマスへの応用を考慮した耐熱性セルラーゼ利用のための酵素カクテルの相乗効果検討 (2017)
  • Author(s): 髙田弥生、淺田元子、佐々木千鶴、中村嘉利
  • Organizer: 第9回日本醸造学会 若手シンポジウム
• [Presentation] ファルカタを原料としたバイオエタノール製造のための水蒸気爆砕前処理の最適条件の検討 (2017)
  • Author(s): 妹尾政都、浅田元子、佐々木千鶴、中村嘉利
  • Organizer: 第9回日本醸造学会 若手シンポジウム
• [Presentation] バイオエタノール残渣となるモデルリグニンを用いたエポキシ樹脂合成の抽出溶媒検討 (2017)
  • Author(s): 藤井萌、浅田元子、佐々木千鶴、中村嘉利
  • Organizer: 第9回日本醸造学会 若手シンポジウム
• [Book] 枯渇資源と技術開発, --- 徳島大学における分野融合型枯渇資源対応技術の開発 --- (2020)
  • Author(s): 杉山茂、森賀 俊広, 加藤 雅裕, 村井 啓一郎, 堀河 俊英, 霜田 直宏, 古部 昭広, 柳谷 伸一郎, 小笠原 正道, 山本 孝, 中村 嘉利, 浅田 元子, 佐々木 千鶴、田中 秀治, 竹内 政樹, 竹谷 豊, 奥村 仙示, 増田 真志, 岡本 敏弘
  • Total Pages: 5
  • Publisher: 徳島大学産業院出版部