SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (6): 1296-1306.DOI: 10.1016/j.cjche.2018.09.025

• Special Issue: Separation Process Intensification of Chemical Engineering • 上一篇    下一篇

The potential of pervaporation for biofuel recovery from fermentation: An energy consumption point of view

Peiyao Zheng1, Chong Li2, Naixin Wang2, Jie Li2, Quanfu An1,2   

  1. 1 MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China;
    2 Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
  • 收稿日期:2018-07-06 修回日期:2018-09-15 出版日期:2019-06-28 发布日期:2019-08-19
  • 通讯作者: Quanfu An
  • 基金资助:
    Supported by the National Natural Science Foundation of China (No. 21706003) and The Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions (CIT&TCD20170305).

The potential of pervaporation for biofuel recovery from fermentation: An energy consumption point of view

Peiyao Zheng1, Chong Li2, Naixin Wang2, Jie Li2, Quanfu An1,2   

  1. 1 MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China;
    2 Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
  • Received:2018-07-06 Revised:2018-09-15 Online:2019-06-28 Published:2019-08-19
  • Contact: Quanfu An
  • Supported by:
    Supported by the National Natural Science Foundation of China (No. 21706003) and The Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions (CIT&TCD20170305).

摘要: Recovering alcohols from dilute fermentation broth is an emergent task in bio-fuel production process. Since they are primary planned for fuels, energy required to separate these alcohols should be considered in evaluating the potential of a separation technology. A membrane-based process, pervaporation, is of special interest because of its environmental friendliness and easy integrating character. This review probes into the fundamentals of pervaporation especially in terms of the heat required for evaporation. Meanwhile, the separation data of the most representative alcohol-selective pervaporation membranes reported in the literatures are collected and compared with the vapor-liquid equilibrium curve, which represents the distillation selectivity. They include:inorganic membranes, silicon rubber based membranes, Mixed Matrix Membranes and some other special materials. By doing so, the status of alcohol recovery via pervaporation would be more clear for researchers. For ethanol recovery, it is selectivity rather than flux that is in urgent need of solution. While for butanol recovery, membranes with satisfactory selectivity have been developed, increasing the separation capacity would be more pressing.

关键词: Bio-alcohol, Pervaporation, Energy, Selectivity, Vapor-liquid equilibrium

Abstract: Recovering alcohols from dilute fermentation broth is an emergent task in bio-fuel production process. Since they are primary planned for fuels, energy required to separate these alcohols should be considered in evaluating the potential of a separation technology. A membrane-based process, pervaporation, is of special interest because of its environmental friendliness and easy integrating character. This review probes into the fundamentals of pervaporation especially in terms of the heat required for evaporation. Meanwhile, the separation data of the most representative alcohol-selective pervaporation membranes reported in the literatures are collected and compared with the vapor-liquid equilibrium curve, which represents the distillation selectivity. They include:inorganic membranes, silicon rubber based membranes, Mixed Matrix Membranes and some other special materials. By doing so, the status of alcohol recovery via pervaporation would be more clear for researchers. For ethanol recovery, it is selectivity rather than flux that is in urgent need of solution. While for butanol recovery, membranes with satisfactory selectivity have been developed, increasing the separation capacity would be more pressing.

Key words: Bio-alcohol, Pervaporation, Energy, Selectivity, Vapor-liquid equilibrium