ARTÍCULO
TITULO

HPLC mapping of second generation ethanol production with lignocelluloses wastes and diluted sulfuric hydrolysis

Diogo José Horst    
Rodolfo R. H. Petter    
Rogério de Almeida Vieira    
Theodoro Marcel Wagner    

Resumen

Wood wastes are potential material for second generation ethanol production within the concept of residual forest bio-refinery. Current paper reports on ethanol production employing an HPLC method for monitoring the chemical content dispersed in the hydrolysate liquor after fermented. The proton-exchange technique was the analytical method employed. Twelve types of wood chips were used as biomass, including Hymenolobium petraeum, Tabebuia cassinoides, Myroxylon peruiferum, Nectandra lanceolata, Ocotea catharinensis, Cedrelinga catenaeformis, Cedrela fissilis Vell, Ocotea porosa, Laurus nobilis, Balfourodendron riedelianum, Pinus Elliotti and Brosimum spp. The influence of diluted sulfuric hydrolysis on the yeast Saccharomyces cerevisiae during the fermentation assay was also investigated. Standard compounds mapped in the analysis comprised fructose, lactic acid, acetic acid, glycerol, glucose and ethanol. The yeast showed ethanol productivity between 0.75 and 1.91 g L-1 h-1, respectively, without the addition of supplementary nutrients or detoxification. The use of these materials for the bioconversion of cellulose into ethanol has been proved. Current analysis contributes towards the production of biofuels by wastes recovery and by process monitoring and optimization. 

 Artículos similares

       
 
Sergii Boichenko,Stepan Zubenko,Sergii Konovalov,Anna Yakovlieva     Pág. 42 - 49
Unrefined Camelina oil was transesterified on an alkaline catalyst with the application of commercial fuel ethanol of high hygroscopicity. It was shown that the rise of moisture content in alcohol up to 1 % leads to the low output of ethyl esters. T... ver más

 
Anna Livia Paraluppi, Sandra Regina Ceccato-Antonini (Author)     Pág. e36779
A major concern of ethanol production plants is the control of native microorganisms mainly derived from the sugarcane juice that may reduce the fermentative yield. In the wine industry, the sulphur dioxide (SO2) is commonly used to control the undesirab... ver más

 
Elisa Franco Ribeiro, Débora Maria Moreno Luzia, Neuza Jorge     Pág. e36451
Coffee husk can be removed from the grain mainly by two different ways: the wet method and the dry method. Aiming to add value to the by-products of the coffee agroindustry, we analyzed the antioxidant properties of hydroalcoholic extracts of coffee husk... ver más

 
Juliana Ferreira, Vidiany Aparecida Queiroz Santos, Crispin Humberto Garcia Cruz (Author)     Pág. e35169
Ethanol production by Zymomonas mobilis CCT 4494 and Pachysolen tannophilus CCT 1891 co-cultures and individual fermentation from each microorganism are evaluated with hydrolysate of banana peels. Banana peels hydrolysate was obtained by sulfuric acid pr... ver más

 
Edison Sotolani Claudino,João Gilberto Mendes dos Reis,Pedro Luiz de Oliveira Costa Neto,Antonio Carlos Vaz Lopes,Sivanilza Teixeira Machado     Pág. 282 - 300