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Acid Hydrolysis and Chemicals from Cellulosics

  • G. T. Tsao

Abstract

Acid hydrolysis of cellulosics can be divided into two groups: high temperature and low temperature. Approximately, 140°C can be considered the demarcation of the two types of processes. The low temperature acid process ranges from 80 to 140°C; most high temperature processes operate from 160 to 240°C. The main difference in the reaction results caused by the difference in the reaction temperature is the formation of furfural and its derivatives at a high temperature in the acidic solution. Furfural and related by-products represent a loss of sugar yield and create problems in subsequent fermentations due to the inhibitory effects of these by-products on living cells. The acid is also much more corrosive at a high temperature and the required special metal for equipment fabrication is costly.

Keywords

Uronic Acid Sugar Yield Methyl Ethyl Ketone Xylose Isomerase Hemicellulose Hydrolysate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Elsevier Applied Science Publishers 1986

Authors and Affiliations

  • G. T. Tsao
    • 1
  1. 1.Laboratory of Renewable Resources EngineeringPurdue UniversityWest LafayetteUSA

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