OP-II-3

PP-III-71and as a resut, could enhance bio-oil yield by minimizing secondary reactions suchas thermal cracking, repolymerisation and recondensation. The effect of U 0 /U mf ratioon the product yields was shown in Figure 1 (b). The highest bio-oil yield of 36% wasachieved with U 0 /U mf ratio of 4 and there was no obvious influence on the yield of gasand char as U 0 /U mf ratio was increased. Therefore, the optimum pyrolysistemperature and U 0 /U mf ratio for achieving maximum bio-oil yield were 425°C and 4,respectively. The qualitative and quantitative analysis of bio-oil was conducted byGC/MS system. About 30 peaks were identified by GC/MS software library. The maincompounds were classified by aliphatics, phenolics, furans, cyclopentane and theneach fraction was calculated from peak area. The most abundant group of bio-oil wasaliphatics and this differs significantly from the bio-oil composition obtained fromlignocellulosic biomass [5].From the above results, it is believed that the utilization of kelp for producinguseful chemicals or fuels by fast pyrolysis seems to be promising although it isdependent upon availability of resources.(a) Influence of pyrolysis temperature(b) Influence of U 0 /U mf ratioFigure 1. The influenc of experimental conditions on the product yields.References[1]. A. V. Bridgewater, J. Anal. Appl. Pyrol. 51 (1999) 3.[2]. D. Meier and O. Faix, Biores. Technol. 68 (1999) 71.[3]. X. Miao et al., J. Anal. Appl. Pyrolysis 71 (2004) 855.[4]. T. Minowa et al., Fuel 73 (1994) 1855.[5]. Q. Zhang et al., Energy Conversion & Management 48 (2007) 87.AcknowledgementsThe authors would like to acknowledge funding from the Korea Institute of Science &Technology and the Korean Ministry for Food, Agriculture, Forestry and Fisheries.573