Assessing the Lignin Fraction Extracted from Brazilian Energy Crops | Science Publications

American Journal of Environmental Sciences

Pedro Paulo de Andrade Junior¹  Jhon Jairo Ramírez Behainne¹  Diogo José Horst¹  Luís Filippe Serpe¹ 

关键词: Biomass;    Renewable Energy;    Lignin Extraction Methods;   

DOI  :  10.3844/ajessp.2015.46.54

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

This study quantifies the extraction performanceand some properties of thelignin obtained from six crops with potential for generating thermal energy in Brazil. A full factorial design (2²)with four replicates including two extraction methods and two particlessize distributions was adopted for assessing the fraction of lignin, as well asits Higher Heating Value (HHV) and composition given by the proximate andultimate analysis. It was verified that in all cases the HHV of the lignin isgreater than that obtained for the respective raw material, suggesting thatthese lignins could be also used as fuel in thermochemical processes. The ANOVAanalysis showed that at 95% of confidence level the lignin yield is influencedby the extraction methods, which employ different pH values during thehydrolysis treatment. In addition, it was found that, in most cases, a smallerbiomass particle size contributed to more effective lignin extraction. Responsesurfaces were also included in order to show tendencies of the lignin yieldobtained for each raw material in function of the pH value used by theextraction method and the biomass particle size range.

【 授权许可】

Unknown