Journal
3 BIOTECH
Volume 9, Issue 6, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13205-019-1754-0
Keywords
Rice yield; Weed; Cyperus difformis; Alkaline pretreatment; Immobilized yeast; Bioethanol
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This study investigated the potential of a new material, so-called small-flowered nutsedge, for bioethanol production. This plant causes the huge loss of rice yield as it competes nutrients, sunlight and other necessary elements with rice plant to grow. The project plans to transform its biomass into valuable product and bring profitable for famers. The powered raw sample was treated with sodium hydroxide (NaOH) and hydrogen peroxide (H2O2) as followed the design experiment. The use of response surface method is helping researcher to save time and effort but still gain meaningful predicted value that closed to the actual value. The highest total sugar was given when the pretreatment condition is solid to liquid ratio of 0.05, 1% NaOH, 1% H2O2 for 72h. The efficiency of hydrolysis can reach 47% after 24h with cellulase enzyme at 50 degrees C, 150rpm and highest ethanol concentration was obtained on the fifth day of fermentation.
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