Effects of Moisture Content and Burning Period on Concentration of Smoke Particles and Particle-Bound Polycyclic Aromatic Hydrocarbons from Rubber-Wood Combustion

Abstract

Physical and chemical characteristics of particles from rubber-wood combustion in a natural rubber sheet smoking process were studied. Experimental parameters include wood moisture content and wood-burning period. The size distribution of smoke particles was measured by using an 8-stage Andersen air sampler. Total smoke particle concentration was determined by collecting particles using a modified high volume sampler. Polycyclic Aromatic Hydrocarbons (PAHs) were extracted with Benzene-Ethanol by using ultrasonic technique and analyzed by HPLC/UV detection. Results show that the size distribution of smoke particles is single-mode in which the mass median aerodynamic diameter (MMAD) is 0.68 μm and the average smoke concentration is 15.806 mg/m 3 . This is equivalent to a mass emission to workplace of 4.33 kg/month/room. The smoke particle concentration and associated PAH concentration clearly depend on the wood moisture content and burning period. The highest PAH concentration and smoke particle concentrations were found to be 60.59 to 118.06 μg/m 3 and 23.35 to 47.54 mg/m 3 , respectively, for a wood moisture content of 37.4 to 73.6% d.b. (dry basis) at the initial period. Smoke particle-bound PAHs are dominated by 4-6 ring PAH compounds that contribute to more than 60% of the total PAHs.

The Emission Characteristics of PAHs during Coal and Sewage Sludge Co-Combustion in a Drop Tube Furnace

“…In recent years, some scholars proposed coal/MSW co-combustion to solve the above problem (You et al, 2008;Zhu et al, 2008). However, the cocombustion method can not solve all of problems related to MSW treatment, some pollutants such as heavy metals, dioxins and Polycyclic Aromatic Hydrocarbons (PAHs) are formed during MSW incineration process (Tekasakul et al, 2008;Chomanee et al, 2009;Ye et al, 2012).…”

Application of Electrostatic Precipitator in Collection of Smoke Aerosol Particles from Wood Combustion

“…The size of the particle used in this calculation is 0.68 micron which is a mass median aerodynamic diameter (MMAD) of rubber-wood smoke particles measured by Chomanee et al (2009).…”

“…Combustion of rubber-wood results in large emissions of PAHs (Furuuchi et al, 2006;Bai et al, 2007;Tekasakul et al, 2008;Chomanee et al, 2009). Hence, measures taken to control or reduce particulate matters emitted from wood combustion is necessary.…”

Removal of Odor-Causing Substances by a Pilot-Scale Oxidative-Reductive Scrubbing Tower System

“…However, several issues are associated with the uses of these technologies for kitchen waste treatment. For example, the unpleasant odors and undesired byproduct formation from combustion and leakage of leachates by landfill possibly due to the high moisture and salt contents in kitchen wastes may limit the applications and efficiencies of these technologies for kitchen waste treatment (Allen et al, 1997;Zou et al, 2003;Popat and Deshusses, 2008;Chomanee et al, 2009;Ning and Sioutas, 2010;Bari et al, 2011;Lo et al, 2011). In addition to incineration and landfill, composting, swine feeding, and bioenergy recycle are the three major technologies used for the recycled kitchen wastes, with public interest in composting has been on the increase in these years (Dimambro et al, 2007;Boldrin et al, 2009;Hecht and Griehl, 2009;Zhang et al, 2010;Latif et al, 2011).…”