Decomposition Efficiency of Polycyclic Aromatic Hydrocarbons (PAHs) in Nanoparticles from Rubber-wood Combustion Using Soft X-rays
Soft X-rays with a wave length of 1.3 × 10-4–4.1 × 10-4 μm was used to investigate the characteristics of decomposition of particle-bound polycyclic aromatic hydrocarbons (PAHs) in smoke particles emitted from biomass (Rubber-wood) combustion in a laboratory scale tube furnace. The smoke particles irradiated and not irradiated by the soft x-rays were collected using a 10-stage Andersen sampler equipped with an inertial-filter stage (ANIF) simultaneously, which can collect sized particles down to ~70 nm. Particle-bound PAHs were analyzed to determine the decomposition efficiency of PAHs in relation to particle size and irradiation time of soft X-rays. The results showed that smoke particles in nano-size range (<100 nm) have a major mass fraction more than 20％ of total smoke particles as well as their large contribution to PAHs. 4-6 rings PAHs in nano-particles (<70 nm) were decomposed by soft X-rays irradiation up to about 90％ at the longest irradiation time. The decomposition efficiency of PAHs was shown to increase as the particle size decreases, while the soft X-rays could not decompose gaseous PAHs.
Soft X-rays PAHs decomposition Rubber wood Nanoparticles
J. Chomanee S. Tekasakul P. Tekasakul M. Hata M. Furuuchi
Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC),Faculty of 2Department of Mechanical Engineering,Faculty of Engineering,Prince of Songkla University,Hat Yai,So Graduate School of Natural Science and Technology,Kanazawa University,Kakuma-machi,Kanazawa 920-1162
国际会议
西安
英文
183-189
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）