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›› 2002, Vol. 2 ›› Issue (2): 0-0.

• 2 •    

Coupling System for Food Wastes Anaerobic Digestion and Polyhydroxyalkanoates Production with Ralstonia eutropha

DU Guo-cheng (堵国成), YU Jian, CHEN Jian (陈坚)   

  1. 1. Key Lab. Industrial Biotechnol, Ministry of Education, Southern Yangtze Univ., Wuxi, Jiangsu 214036, China;2. Dept. Chem. Eng., Hong Kong Univ. Sci.& Technol., Clear Water Bay, Kowloon, Hong Kong, China
  • 出版日期:2002-04-20 发布日期:2002-04-20

Application of Stoichiometric Displacement Model for Retention to the Chromatographic Separation by Molecular Imprinting Polymer

SUN Rui-feng, LUO Hui, SUI Hong-yan, SHEN Zhong-yao   

  1. 1. Key Lab. Industrial Biotechnol, Ministry of Education, Southern Yangtze Univ., Wuxi, Jiangsu 214036, China;2. Dept. Chem. Eng., Hong Kong Univ. Sci.& Technol., Clear Water Bay, Kowloon, Hong Kong, China
  • Online:2002-04-20 Published:2002-04-20

摘要: A new technology was developed to couple the anaerobic digestion of food wastes with production of polyhydroxyalkanoates (PHAs). Acetic, propionic, butyric and lactic acids were produced during food wastes anaerobic digestion and their concentrations reached 5.5, 1.8, 27.4 and 32.7 g/L, respectively under appropriate digestion conditions. The fermentative acids were transferred through a dialysis membrane to an air-lift reactor for PHA synthesis by Ralstonia eutropha. Dry cell concentration and PHA content reached 22.7 g/L and 72.6%, respectively. The obtained PHA was a copolymer of b-hydroxybutyrate (HB) and b-hydroxyvalerate (HV) with 2.8% (mole ratio) of HV units in polymer.

关键词: food wastes, fermentative acids, polyhydroxyalkanoates, PHAs, Ralstonia eutropha, anaerobic digestion

Abstract: A new technology was developed to couple the anaerobic digestion of food wastes with production of polyhydroxyalkanoates (PHAs). Acetic, propionic, butyric and lactic acids were produced during food wastes anaerobic digestion and their concentrations reached 5.5, 1.8, 27.4 and 32.7 g/L, respectively under appropriate digestion conditions. The fermentative acids were transferred through a dialysis membrane to an air-lift reactor for PHA synthesis by Ralstonia eutropha. Dry cell concentration and PHA content reached 22.7 g/L and 72.6%, respectively. The obtained PHA was a copolymer of b-hydroxybutyrate (HB) and b-hydroxyvalerate (HV) with 2.8% (mole ratio) of HV units in polymer.

Key words: molecular imprinting, liquid chromatography, stoichiometric displacement model for retention

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