Ethanol in gasoline: environmental impacts and sustainability review article

Niven, Robert K.

doi:10.1016/j.rser.2004.06.003

Cited by 319 publications

(182 citation statements)

References 56 publications

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“…A 3-fold higher fleet average emissions rate was observed for E10 compared to ULP. This is consistent with other studies that report little or no change in formaldehyde and significant increases in acetaldehyde for low ethanol blends [5][6][7]. The BTEX, 1,3-butadiene and styrene air toxic emissions generally trend downwards with increases in the ethanol content of the fuel, as did the ozone precursor hydrocarbons.…”

Section: Measurement Of Exhaust Emissionssupporting

confidence: 90%

The Health Impacts of Ethanol Blend Petrol

Beer

Carras

Worth³

et al. 2011

Energies

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Section: Measurement Of Exhaust Emissionssupporting

confidence: 90%

The Health Impacts of Ethanol Blend Petrol

Beer

Carras

Worth³

et al. 2011

Energies

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“…The issue of using hydrated ethanol as an alternative to gasoline is currently under debate. Various authors have evaluated the potential impacts of such a change [10][11][12]. In Brazil, ethanol came to be used extensively as a vehicle fuel in late 1980s.…”

Section: Introductionmentioning

confidence: 99%

Emission Scenario Assessment of Gasohol Reformulation Proposals and Ethanol Use in the Metropolitan Area of São Paulo

Martins¹,

Andrade²

2008

TOASCJ

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Abstract:The frequent episodes of high concentrations of ozone and of inhalable particulate matter occurring in the Metropolitan Area of Sao Paulo (MASP) are primarily associated with vehicle emissions. The objective of this study was to evaluate the impact of the use of reformulations of the gasoline-ethanol blend known as gasohol and of ethanol on the ozone formation. A three-dimensional photochemical model was employed to estimate the sensitivity of ozone and evaluate the implementation of emission scenarios, considering various fuel formulations, in the MASP. The base case ozone concentrations were consistent with the observations over six air quality monitoring stations located in the MASP, suggesting that the model can be used to evaluate the impact that various emission scenarios would have on ozone levels. Six scenarios were analyzed; scenarios 1 to 5 involved reductions in compounds found in gasohol in various proportions compared with the base emission inventory and scenario 6 specified that the entire light duty fleet would burn pure ethanol. In scenario 3 (reductions in olefins, aromatics and benzene) and scenario 5 (reductions in the five species that are associated with higher ozone sensitivity), ozone concentrations were below the national standard only at the air quality monitoring stations (not domain-wide). Our results suggest that implementing scenario 6 would improve air quality in the MASP.

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“…Much is expected from a partial shift to biomass-derived ethanol to reduce carbon dioxide emissions [1,2]. Recently, considerable developments have been reported in the use of ethanol and ethanolbased oxygenates as alternative motor vehicle fuels, fuel additives [3] or as a feedstock to produce hydrogen [4,5]. On the other hand, there is also growing interest in converting ethanol to acetaldehyde and ethylene because these are important starting chemicals for the chemicals industry [6,7].…”

Section: Introductionmentioning

confidence: 99%

Controlling Reaction Pathways for Alcohol Dehydration and Dehydrogenation over FeSBA-15 Catalysts

Guan

Santen

et al. 2007

Catal Lett

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The iron location in FeSBA-15 strongly influences the selectivity to dehydrogenation and dehydration in ethanol conversion. At low iron loading, Fe is present as isolated Fe 3þ species in the amorphous silica phase. At higher loading additional aggregated forms of iron oxide exist. Isolated Fe 3þ species in the silica matrix imply Brønsted acidity resulting in selective formation of ethylene, whereas FeO x clusters catalyze formation of ethylene and aldehyde.

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Ethanol in gasoline: environmental impacts and sustainability review article

Cited by 319 publications

References 56 publications

The Health Impacts of Ethanol Blend Petrol

The Health Impacts of Ethanol Blend Petrol

Emission Scenario Assessment of Gasohol Reformulation Proposals and Ethanol Use in the Metropolitan Area of São Paulo

Controlling Reaction Pathways for Alcohol Dehydration and Dehydrogenation over FeSBA-15 Catalysts

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