Progress in bioethanol processing

Sugar cane bagasse as feedstock for second generation ethanol production. Part I: Diluted acid pretreatment optimization

“…Increasing the severity factor further caused a decrease in xylose concentration. This is due to the dehydration of the released sugars to furan compounds (furfural from pentoses and hydroxymethylfurfural from hexoses), as described by Balat et al (2008) and Lloyd and Wyman (2003). This reaction is more important as the experimental condition is more drastic, i.e., as the severity factor gets higher more furan compounds are generated (Figure 2).…”

“…Additionally, xylose, the main hemicellulose-derived pentose, and hexose may be degraded during acid hydrolysis into furfural and 5-(hydroxymethyl) furfural (hydroxymethylfurfural), respectively, which are also reported to be inhibitors of cell metabolism (Balat et al 2008). …”

Methods of energy extraction from microalgal biomass: a review

“…Gasification is the conversion of organic matter by partial oxidation at high temperature (800 -1000 °C) mainly into a combustible gas mixture (syngas) with small quantities of char and bio-crude, typically 10 % and 5 % respectively (Demirbas 2001;McKendry 2002;Saidur et al 2011;Bain 2004 (Demirbas 2001;Saidur et al 2011). The gas can be burnt to produce heat or converted to electricity in combined gas turbine systems (Demirbas 2001;McKendry 2002), or can be used to produce methanol and hydrogen as a fuel for transport and other uses (McKendry 2002;Saidur et al 2011).…”

Análise do ciclo de vida aplicada à produção de bioetanol a partir de material Lignocelulósico remanescente em dejeto bovino

“…Até mesmo com biomassas tradicionais ainda existem inovações a serem inseridas no processo, levando a maior eficiência e menor custo [2][3][4].…”