Journal of Fundamentals of Renewable Energy and Applications
Open Access
ISSN: 2090-4541
ISSN: 2090-4541
Ji Young Jung, Si Young Ha, Jeong Bin Nam, Jai Hyun Park and Jae-Kyung Yang
Gyeongsang National University, South Korea
Posters & Accepted Abstracts: J Fundam Renewable Energy Appl
One way to increase the supply of woody biomass is short rotation coppice, where fast-growing wood species such as poplar and willow are planted on agricultural land and harvested for bioenergy or material use after a short rotation period. Moreover, wood chips from short rotation coppice have better fuel properties than other renewable raw materials such as Miscanthus or straw. Fastgrowing woods such as Populus nigra �?�? Populus maxiwiczii, Populus euramericana, Populus alba �?�? Populus glandulosa, Salix alba, and Liriodendron tulipifera are widely distributed in South Korea; however, their utilization for biofuel production is limited and further development is required. In this study, we evaluated the potential of fast growing woods (P. nigra �?�? P. maxiwiczii, P. euramericana, P. alba �?�? P. glandulosa, S. alba, and L. tulipifera) as a biomass resource for bioethanol production for different growth time periods. Poplar wood (P. nigra �?�? P.maxiwiczii, P. euramericana, and P. alba �?�? P. glandulosa) generally has a higher content of cellulose than glucose compared to other wood samples (S. alba, and L. tulipifera). We found that bioethanol production by enzymatic hydrolysis of cellulose was higher in immature (3 years) than in mature (12 years) fast-growing woods. The highest reducing sugar yield reached after 72 h of enzymatic hydrolysis was 3.63 g/L and 3.91 g/L for P. nigra �?�? P. maxiwiczii (3 years), and S. alba (3 years), respectively. Similarly, immature L. tulipifera woods (3 years) produced the highest amount of ethanol. These results suggest that immature fastgrowing woods are a potential biomass resource for bioethanol production as an alternative energy source. Furthermore, optimizing the harvest age to take advantage of the rapid growth of fast-growing woods may be one strategy for obtaining a more suitable fastgrowing wood material for bioethanol production.
Ji Young Jung is a PhD candidate at Gyeongsang National University, South Korea. Currently, she works on bioethanol production, especially in the evaluation of chemical pre-treatment of lignocellulosic material with steam explosion as a step previous to the hydrolysis of cellulose. Additionally, her research interests are in biorefinery processes and optimization for bioethanol production.
Email: jungjy@gnu.ac.kr