ANALYSIS OF POLYCYCLIC AROMATIC HYDROCARBONS EMISSION FROM LABORATORY SCALE INCINERATION OF BIOMASS
The use of biomass as fuel for combustion allows partial or full replacement of fossil fuels and the reduction of fossil carbon dioxide emissions. Nevertheless, combustion of biomass waste may generate toxic pollutants. Polycyclic aromatic hydrocarbons (PAHs) are a major component of toxic emissions from biomass combustion. PAHs generation are generally related to incomplete combustion. Furthermore, PAHs are also related to the combustion temperature, oxygen consumption and the origin of the biomass fuel. In the present study, experimental protocols for biomass combustion were carried out and analytical quantification of PAHs was determined. Five different biomasses were analyzed, including: air-dried sludge, fry-dried sludge, recycling cooking oil, and two species of wood. Combustion of each fuel was carried out on a sample weighing about 1 g in a tubular furnace. The combustion temperature was consistently 800-850℃. The organic products resulting from the samples incineration were collected onto a glass fiber filter. The collected residues were extracted at ambient temperature under ultrasonic condition with dichloromethane. Then, the solution was concentrated by evaporation under nitrogen current. The identification and quantification of PAHs were performed by using gas chromatography coupled to mass spectrometry. Among the forty compounds found in the particulate phase, the 16 main PAHs classified by the EPA have been identified. PAHs emissions from fry-dried sludge are much more important than those of air-dried sludge, shale oil and wood (factor 10). Recycling cooking oil yielded higher PAHs emission than other fuels (factor 10). The PAHs distribution is strongly dependent on the fuel nature.
Combustion fry-dried sludge air-dried sludge woody biomass oil shale recycling cooking oil Polycyclic aromatic hydrocarbons
Romdhana M.H. Moreau L. Sablayrolles C. Montréjaud-Vignoles M. Lecomte D. Simon V.
Université de Toulouse, MINES ALBI, RAPSODEE UMR CNRS 2392, ALBI, France, F 81013 Université de Toulouse, INPT, LCA (Laboratoire de Chimie Agro-Industrielle), ENSIACET, 4 Allées Emil
国际会议
北京
英文
1298-1302
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）