PRODUCTION OF BIOETHANOL FROM RICE STRAW USING YEAST EXTRACTS PEPTONE DEXTROSE

Authors

  • DY Tsunatu DEPARTMENT OF AGRICULTURAL AND BIO-RESOURCES ENGR., TARABA STATE UNIVERSITY, JALINGO, TARABA STATE, NIGERIA
  • KG Atiku CHEMICAL ENGINEERING DEPARTMENT, UNIVERSITY OF MAIDUGURI, MAIDUGURI, BORNO STATE, NIGERIA
  • TT Samuel DEPARTMENT OF CHEMISTRY, TARABA STATE UNIVERSITY, P.M.B 1167, JALINGO-TARABA STATE, NIGERIA
  • BI Hamidu DEPARTMENT OF CHEMISTRY, TARABA STATE UNIVERSITY, P.M.B 1167, JALINGO-TARABA STATE, NIGERIA
  • DI Dahutu BIO-RESOURCES DEVELOPMENT CENTRE (BIODEC), JALINGO CENTRE, TARABA STATE, NIGERIA

DOI:

https://doi.org/10.4314/njt.361.1241

Keywords:

Bioethanol, Oryza sativa, Saccharomyces cerevisiae, Fermentation, Yield, Substrate.

Abstract

The production of bio-ethanol from Rice Straw (Oryza sativa) was carried out using rice straw as a feedstock and a combination of Yeast Extracts Peptone Dextrose (YEPD)at 0.2%(w/v) 0.4%(w/v), 0.6%(w/v), 0.8%(w/v) and 1%(w/v) concentrations and Saccharomyces cerevisiae (yeast) at 0.5% (w/v), 1%(w/v), 1.5%(w/v), 2%(w/v) and 2.5%(w/v) concentrations as cells for fermentation. The study determined the most suitable pre-treatment method from the following pretreatment methods; 1M NaOH and heating. IM NaOH pre-treatment gave the highest cellulose and lowest lignin content. The effects of substrate concentration values of 1g/l, 2g/l, 4g/l, 6g/l and 8g/l; with particle size of 300?m and cell loading combination of YEPD at 0.2%(w/v) 0.4%(w/v), 0.6%(w/v), 0.8%(w/v), 1%(w/v) concentrations and Saccharomyces cerevisiae (yeast) at 0.5% (w/v), 1%(w/v), 1.5%(w/v), 2%(w/v), 2.5%(w/v) on the fermentation process were investigated to obtain optimum conditions of fermentation. The optimum conditions of fermentation were obtained at temperature of 330C, pH value of 4.0, substrate concentration of 4g/l, particle size 300?m and YEPD to yeast ratio of 0.8/1.5 after 72 hours of fermentation time. Also substrate concentration of 4g/l, gave highest bioethanol yield of 49.50%.

 

http://dx.doi.org/10.4314/njt.v36i1.36

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Section

Agricultural, Bioresources, Biomedical, Food, Environmental & Water Resources Engineering

How to Cite

PRODUCTION OF BIOETHANOL FROM RICE STRAW USING YEAST EXTRACTS PEPTONE DEXTROSE. (2016). Nigerian Journal of Technology, 36(1), 296-301. https://doi.org/10.4314/njt.361.1241