Study of sugarcane bagasse/straw combustion and its atmospheric emissions using a pilot-burner

This work conducted experimental combustion on a closed chamber using two different materials: mixture (1:1) sugarcane bagasse/straw and pre-treated biomass. The sampling method was an Andersen cascade impactor with eight stages. Tests were carried out on untreated biomass varying the velocities observed in the sampling duct (4.18; 5.20, 6.85, and 8.21 m.s −1 ). Pre-treated biomass tests were performed at 4.19 m.s −1 because in this condition there is a higher speed stability inside the duct. During the combustion tests, the concentration of emitted particles was higher for the lower speed range, with an order of 4.19 > 5.40 > 6.85 > 8.21 m.s −1 . The higher speeds observed inside the duct behaved as a dragging agent for particulate material. For the tests at the speed of 8.21 m.s −1 where the flow inside the duct was 0.088 m 3 s −1 , this behavior is more evident. Considering the fine diameter particles (