Light Absorption Properties of Black Carbon and Brown Carbon Emitted from Biomass Combustion in Bangladesh
| Published | 2022 |
|---|---|
| Publisher | Elsevier BV |
| DOI | 10.2139/ssrn.4030374 |
Open access (green)
Carbonaceous aerosols: black carbon and brown carbon Source apportionment and emission sources
Abstract
Understanding and improving inventories regarding the light-absorbing carbonaceous aerosols' optical characteristics is critical due to their effect on local and regional climate. The optical properties of filter-based particles extracted from nine different biomasses combustion at the traditional cooking stove in the laboratory setting were explored. The absorption ångström exponent (AAE) values were found between 1.05 to 5.45 which indicates brown carbon (BrC)-rich aerosols rather than black carbon (BC)-rich from biomass burning emission. The mass absorption efficiency (MAE) values of BC (880 nm) and BrC (370 nm) ranged from 1.46 to 15.06 m2g-1 (7.46±4.09 m2g-1) and 1.35 to 26.45 m2 g-1 (13.19 ± 7.28 m2 g-1), respectively. The projected absorption emission factors (AEF) at 370 nm and 880 nm fluctuated from 0.57 to 18.56 m2 kg-1 (4.87 ± 5.30 m2 kg-1), 0.01 to 1.22 m2 kg-1, (0.38 ± 0.26 m2 kg-1), respectively. On average, BrC contributed about 59 ± 35% to the overall aerosol absorption at 370 nm. The prospective climatic influence of biomass burning events in rural Southeast Asia was illustrated by the projected considerable attribution of BrC to overall light absorption.
Abstract © the authors and Elsevier BV.
Cite this
Md Riad Sarkar Pavel, Shahid Uz Zaman, Sabuz Paul, Piasha Zaman, Abdus Salam (2022). Light Absorption Properties of Black Carbon and Brown Carbon Emitted from Biomass Combustion in Bangladesh. Elsevier BV. https://doi.org/10.2139/ssrn.4030374
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