African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12291

Full Length Research Paper

Recycling of vinasse in ethanol fermentation and application in Egyptian distillery factories

Fadel, M.*
  • Fadel, M.*
  • Microbial Chemistry Department, National Research Center, Cairo, Egypt.
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Abdel-Naser A. Zohri
  • Abdel-Naser A. Zohri
  • Botany and Microbiology Department, Faculty of Science, Assiut University, Egypt.
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M. Makawy
  • M. Makawy
  • Distillation Factories, Sugar and Integrated Company, El- Hawamdia Giza, Egypt.
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M. S. Hsona
  • M. S. Hsona
  • Distillation Factories, Sugar and Integrated Company, El- Hawamdia Giza, Egypt.
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A. M. Abdel-Aziz
  • A. M. Abdel-Aziz
  • 3Distillation Factories, Sugar and Integrated Company, El- Hawamdia Giza, Egypt.
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  •  Received: 01 August 2014
  •  Accepted: 13 October 2014
  •  Published: 19 November 2014

Abstract

Vinasse production is one of the most significant and challenging issues in the industrial production of ethanol due to pollution problems. In this study, vinasse obtained from ethanol by fermentation of sugarcane molasses was used instead of water to prepare the fermentation medium. Saccharomyces cerevisiae F-727 was selected from 10 tested yeast strains. Nutritional requirements of nitrogen, phosphorous and magnesium, as well as the effect of inoculum size were studied. There was a decrease in required nutrients when vinasse was used instead of fresh water; and 50% yield was achieved in fresh water together with an improved efficiency of the fermentation.
 
Key words: Vinasse, ethanol fermentation, Saccharomyces cerevisiae.