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• CFD simulations of a spinner flask and a rotary wall vessel were performed. • Increasing impeller speed reduced the Kolmogorov length scales. • The Kolmogorov length scales were strongly correlated with cell aggregate sizes. • The rotary wall vessel was designed to minimize shear stress distributions. • The rotary vessel reduced shear stress distribution by half than the spinner flask.

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h i g h l i g h t s The Influence of roadside barriers on the near-road air quality was investigated. RANS technique coupled with the k À ε realizable turbulence model was utilized. Vegetation barrier depending on LAD can improve or deteriorate the air quality. The dense canopy can improve the near-road air quality by inducing vertical mixing.

Plancha-type stoves have been widely disseminated in Mexico and Central 13 America, but the contribution of fugitive emissions from these stoves to indoor air 14 concentrations has been poorly quantified. In this study, fugitive emissions were measured for 15 four plancha-type cookstoves most disseminated in Mexico (Patsari, ONIL, Ecostufa, and 16 Mera-Mera). In controlled testing, fugitive emissions from plancha-type chimney stoves (n = 17 15 for each stove) were on average 5 ± 3% for PM 2.5 and 1 ± 1% for CO, much lower than and the 24 h AQG for CO for the scenario modeled in this study.

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