Repository logo
  • English
  • 中文
Log In
Have you forgotten your password?
  1. Home
  2. College of Engineering / 工學院
  3. Chemical Engineering / 化學工程學系
  4. Integrating microfiltration with cocrystallization for separating glucose from ethanol aqueous solution
 
  • Details

Integrating microfiltration with cocrystallization for separating glucose from ethanol aqueous solution

Journal
Journal of the Taiwan Institute of Chemical Engineers
Journal Volume
78
Pages
344-350
Date Issued
2017
Author(s)
Wu S.-E.
Hwang K.-J.
Cheng T.-W.
Chien C.-H.
Tung K.-L.  
DOI
10.1016/j.jtice.2017.06.030
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/410402
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021820390&doi=10.1016%2fj.jtice.2017.06.030&partnerID=40&md5=0bf94dcafc83f8b35c474380aa167740
Abstract
Membrane filtration has strong potential for bioethanol purification because of its high product selectivity, low energy consumption, and high system flexibility. A method combining microfiltration with cocrystallization was investigated for purifying ethanol from fermentation broth. After yeast removal, unreacted glucose and ethanol must be separated to diminish the product inhibition effect and to enable continuous operation. The simulated fermentation broth was used in experiments to focus salt¡Vsugar cocrystals removal in this study. Sodium chloride (NaCl) was used as a precursor to form crystal nucleus, leading to cocrystalization with glucose. The effect of NaCl concentration and crystallization time on crystal size and growth rate was investigated. The Feret diameters of crystals increased with time, but the crystal growth rate reduced exponentially during crystallization. The optimal mole ratio of NaCl to glucose was determined as 25. Constant pressure microfiltration was subsequently conducted to separate the crystals from ethanol solution. The filtration flux attenuated with time because of membrane fouling, which was majorly attributed to cake formation. The number of crystals increased with the NaCl concentration, resulting in heavier cake mass and therefore higher glucose rejection. Specific filtration resistance was inversely proportional to the square of the crystal size. Moreover, filtration flux increased with the filtration pressure because of the higher driving force. The cake formed by salt¡Vsugar cocrystals was slightly compressible (cake compressibility?=?0.23). An increase in salt concentration led to higher crystal formation, higher cake growth, and therefore higher glucose rejection. The optimal NaCl concentration, at which the highest crystal formation and the glucose rejection were obtained, was 165?kg/m 3 . The proposed method can be used to predict filtration performance from operating conditions and crystal characteristics and applied to other biomass sources in the processes of bioethanol purification. ? 2017 Taiwan Institute of Chemical Engineers
Subjects
Bio-ethanol
Crystallization
Ethanol purification
Membrane filtration
Microfiltration
SDGs

[SDGs]SDG7

Other Subjects
Bioethanol; Crystallization; Energy utilization; Ethanol; Fermentation; Filtration; Glucose; Grain size and shape; Membrane fouling; Purification; Salt removal; Separation; Sodium chloride; Solutions; Bio-ethanols; Cake compressibilities; Crystal characteristics; Ethanol aqueous solutions; Low energy consumption; Membrane filtrations; Simulated fermentation; Specific filtration resistance; Microfiltration
Type
journal article

臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

總館學科館員 (Main Library)
醫學圖書館學科館員 (Medical Library)
社會科學院辜振甫紀念圖書館學科館員 (Social Sciences Library)

開放取用是從使用者角度提升資訊取用性的社會運動,應用在學術研究上是透過將研究著作公開供使用者自由取閱,以促進學術傳播及因應期刊訂購費用逐年攀升。同時可加速研究發展、提升研究影響力,NTU Scholars即為本校的開放取用典藏(OA Archive)平台。(點選深入了解OA)

  • 請確認所上傳的全文是原創的內容,若該文件包含部分內容的版權非匯入者所有,或由第三方贊助與合作完成,請確認該版權所有者及第三方同意提供此授權。
    Please represent that the submission is your original work, and that you have the right to grant the rights to upload.
  • 若欲上傳已出版的全文電子檔,可使用Open policy finder網站查詢,以確認出版單位之版權政策。
    Please use Open policy finder to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement.
  • 網站簡介 (Quickstart Guide)
  • 使用手冊 (Instruction Manual)
  • 線上預約服務 (Booking Service)
  • 方案一:臺灣大學計算機中心帳號登入
    (With C&INC Email Account)
  • 方案二:ORCID帳號登入 (With ORCID)
  • 方案一:定期更新ORCID者,以ID匯入 (Search for identifier (ORCID))
  • 方案二:自行建檔 (Default mode Submission)
  • 方案三:學科館員協助匯入 (Email worklist to subject librarians)

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science