Atmospheric Pressure Plasma Pretreatment of Sugarcane Bagasse: The Influence of Moisture in the Ozonation Process

Autor(es)

Souza-Correa, J. A. ^[1] ; Oliveira, C. ^[1] ; Wolf, L. D. ^[1] ; Nascimento, V. M. ^[1] ; Rocha, G. J. M. ^[1] ; Amorim, J. ^[1]

Afiliação do(s) autor(es)

^[1] Lab Nacl Ciencia & Tecnol Bioetanol CTBE CNPEM, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Biochemistry and Biotechnology; v. 171, n. 1, p. 104-116, SEP 2013.
• Citações Web of Science: 16

Resumo

Sugarcane bagasse samples were pretreated with ozone via atmospheric O-2 pressure plasma. A delignification efficiency of approximately 80 % was observed within 6 h of treatment. Some hemicelluloses were removed, and the cellulose was not affected by ozonolysis. The quantity of moisture in the bagasse had a large influence on delignification and saccharification after ozonation pretreatment of the bagasse, where 50 % moisture content was found to be best for delignification (65 % of the cellulose was converted into glucose). Optical absorption spectroscopy was applied to determine ozone concentrations in real time. The ozone consumption as a function of the delignification process revealed two main reaction phases, as the ozone molecules cleave the strong carbon-carbon bonds of aromatic rings more slowly than the weak carbon-carbon bonds of aliphatic chains. (AU)

• Processo FAPESP: 08/58034-0 - Processing of sugarcane cellulose employing atmospheric pressure plasmas
• Beneficiário: Marco Aurelio Pinheiro Lima
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático