Can cellulose be a sustainable feedstock for bioethanol production?

Indra Neel Pulidindi, Baruchi B. Kimchi, Aharon Gedanken

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Bioethanol is a promising substitute for conventional fossil fuels. The focus of this work was to convert commercial cellulose (Avicel® PH-101) to ethanol. In the first step, cellulose was selectively converted to glucose. Cellulose hydrolysis was carried out under microwave irradiation using hydrochloric acid as catalyst. Process parameters - acid concentration, irradiation time, and power consumption - were optimized. A yield of 0.67g glucose/g cellulose was achieved under modest reaction conditions (2.38M acid concentration, irradiation time - 7min, 70% of power consumption). The glucose thus produced was then converted to ethanol by fermention with yeast (Saccharomyces cerevisiae). The speed, selective nature of the process and the attractive overall yield indicate that cellulose, a vast carbohydrate source, could indeed be a sustainable feedstock for bioethanol production.

Original languageEnglish
Pages (from-to)77-80
Number of pages4
JournalRenewable Energy
Volume71
DOIs
StatePublished - Nov 2014

Bibliographical note

Funding Information:
Gedanken thanks the Israel Science Foundation for supporting the research via a grant 12/586 and the Ministry of Science and Technology for grant number 3-9802 . Appendix A

Keywords

  • Cellulose
  • Ethanol
  • Glucose
  • Hydrolysis
  • Microwave

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