Title:
Evaluation of Different Pretreatment Conditions of Sugarcane Straw Aiming Ethanol Production
Author(s):
Ribeiro Mori, N., Maziero, P., Candido, R.G., Gonçalves, A.R.
Document(s):
Paper
Abstract:
This work aimed to evaluate the best conditions for two types of pretreatments, hydrothermal and ultrasound, in order to obtain a material with high saccharide yield and low formation of inhibitors. For hydrothermal pretreatment, it was studied two temperatures, 160 and 180 ° C, and the times of 10, 20, 30, 40 and 50 minutes, under a solid:liquid ratio of 1: 10 (w / v). For ultrasound, the tests were carried out in a medium with 1% NaOH (w / v) or 1% H2SO4 (w / v), in the times of 1, 5, 10, 15, 20, 25 and 30 minutes, 25 ° C. The frequency of the equipment kept constant (40 kHz) and the ratio solid:liquid was 1:10 (w / v). Yields were determined for both reaction processes of pretreatment, and for the hydrothermal treatment, the best yields were 82% and 78.92% for periods of 10 and 20 minutes, respectively, at a temperature of 160°C. In the case of pretreatment with ultrasound, both in alkaline and in acid medium, the yields achieved were similar, around 85%. Subsequently, chemical characterization of samples submitted to hydrothermal treatment to quantify the levels of cellulose, hemicellulose and lignin was performed. The same procedure was done to characterize the samples treated by ultrasound and these analyses are underway.
Keywords:
hydrothermal pretreatment, ultrasound, sugar cane straw
Topic:
R&D on Processes for Solid, Liquid and Gaseous Fuels from Biomass
Subtopic:
Bioethanol production and sugar release from lignocellulosic
Event:
20th European Biomass Conference and Exhibition
Session:
3DV.1.46
Pages:
1689 - 1691
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-3DV.1.46
Price:
FREE
