Emission analysis of sugarcane bagasse combustion in a burner pilot

Author(s)

Costa, M. A. M. ; Schiavon, N. C. B. ; Felizardo, M. P. ; Souza, A. J. D. ; Dussan, K. J.

• Document type: Journal article
• Source: SUSTAINABLE CHEMISTRY AND PHARMACY; v. 32, p. 16-pg., 2023-02-16.

Abstract

Although biomass is from a renewable source, and its biological development captures CO2, burn-ing emits a mixture of various components, such as particulate materials, CO2, CO, NOx, oxides, VOCs, among others, and may contain F, Hg and As. These gases contribute toward anthro-pogenic air polluting agents and are emitted for energy sources by various industrial sectors, such as sugarcane bagasse burning, which is a waste product of the sugar and alcohol industry. This study aims to quantify gas emissions, mainly CO2, CO, and NOx, from sugarcane bagasse burning under different burner operating conditions and to evaluate the emission and control of these pol-lutants using a Venturi scrubber. The sugarcane bagasse combustion process occurred in an ex-perimental burner, comprising a rotary feeder, combustion chamber, exhaust gas chamber, Ven-turi scrubber, cyclone, blowers, and exhaust ducts. The Venturi scrubber, located between the burner and the cyclone, has a rectangular geometry. The gas velocity was evaluated from 3.4 to 11 m/s and the water flow rates from 2.5 L/min to 6.0 L/min. The results indicate that CO con-centrations ranged from 34 to 311 ppm, the NOx concentrations from 8 to 80 ppm, while CO2 reached values from 6000 to 26000 ppm. Investigating and quantifying these emissions are im-portant to understand the global carbon balance, given the considerable magnitude of CO2 emis-sions from these non-fossil fuels. (AU)

• FAPESP's process: 16/23209-0 - Deployment of new line of full utilization process of sugarcane straw/bagasse mixture via thermochemistry and chemistry conversion
• Grantee: Kelly Johana Dussán Medina
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
• FAPESP's process: 18/00697-5 - Emission control and evaluation of dry deposition of fine particles emitted by biomass combustion process
• Grantee: Maria Angélica Martins Costa
• Support Opportunities: Regular Research Grants
• FAPESP's process: 19/27754-1 - Evaluation of dry deposition velocity and fluxes of smaller than 2,5m particles on urban and agricultural regions
• Grantee: Airton dos Santos Olimpio Dias
• Support Opportunities: Scholarships in Brazil - Scientific Initiation