Multi-wavelength absorption and morphological characteristics of aerosol particles from different biofuel types in India.

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Bibliographic Details
Title:	Multi-wavelength absorption and morphological characteristics of aerosol particles from different biofuel types in India.
Authors:	Kaur, Parminder^1,2 parminder_phy@auts.ac.in, B. S., Arun³, Guha, Anirban², Pipal, Atar Singh⁴
Source:	Current Science (00113891). 3/10/2026, Vol. 130 Issue 5, p431-442. 12p.
Subjects:	Light absorption, Morphology, Climate change, Soot, Biomass energy, Atmospheric aerosols, Carbonaceous aerosols, Combustion
Geographic Terms:	India
Abstract:	The present study characterises aerosol emissions from ten different biofuels used in rural households, examining multi-wavelength light absorption properties and morphological characteristics during flaming and smoldering combustion phases. Strong linear correlations (R 2 = 0.95–0.99) were observed between absorption Ångström exponent (AAE) values across all biofuels. Higher absorption coefficients at 880 nm corresponded to lower AAE values, indicating black carbon (BC) dominance during flaming, while brown carbon (BrC) dominated during smoldering. SEM-EDX analysis revealed flaming combustion produced chain-like aggregates of spherical particles (50–300 nm), while smoldering generated irregular, web-like structures. Carbon dominated both phases (50.8–60.3% flaming, 52.4–62.7% smoldering), with higher potassium during flaming. These findings establish frameworks for source apportionment and understanding climate impacts. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	The present study characterises aerosol emissions from ten different biofuels used in rural households, examining multi-wavelength light absorption properties and morphological characteristics during flaming and smoldering combustion phases. Strong linear correlations (R 2 = 0.95–0.99) were observed between absorption Ångström exponent (AAE) values across all biofuels. Higher absorption coefficients at 880 nm corresponded to lower AAE values, indicating black carbon (BC) dominance during flaming, while brown carbon (BrC) dominated during smoldering. SEM-EDX analysis revealed flaming combustion produced chain-like aggregates of spherical particles (50–300 nm), while smoldering generated irregular, web-like structures. Carbon dominated both phases (50.8–60.3% flaming, 52.4–62.7% smoldering), with higher potassium during flaming. These findings establish frameworks for source apportionment and understanding climate impacts. [ABSTRACT FROM AUTHOR]
ISSN:	00113891
DOI:	10.18520/cs/v130/i5/431-442