Emission of volatile organic compounds during open fire cooking with wood biomass: Traditional three-stone open fire vs. gasifier cooking stove in rural Kenya
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View abstract on PubMed
Summary
This summary is machine-generated.Wood biomass cooking releases hazardous air pollutants like volatile organic compounds (VOCs). Gasifier stoves significantly reduce VOC emissions compared to open fires, especially with good kitchen ventilation, improving indoor air quality.
Area Of Science
- Environmental Health
- Indoor Air Quality
- Combustion Science
Background
- Wood biomass fuels are common cooking sources in developing countries.
- Combustion releases hazardous air pollutants, including volatile organic compounds (VOCs).
- These pollutants disproportionately affect vulnerable populations like women and children.
Purpose Of The Study
- To quantify and compare volatile organic compound (VOC) emissions from wood biomass cooking using a traditional three-stone open fire versus a top-lit updraft gasifier stove.
- To assess the impact of kitchen ventilation on VOC emission levels.
- To identify specific hazardous VOCs and evaluate their reduction potential with cleaner cooking technologies.
Main Methods
- Field study conducted in Kwale and Siaya counties, Kenya.
- Utilized thermal desorption gas chromatography-mass spectrometry for VOC analysis.
- Employed a non-target screening approach to identify a wide range of VOCs.
Main Results
- Gasifier stoves reduced total VOC emissions by 48-77% in well-ventilated kitchens compared to open fires.
- In poorly ventilated kitchens, the difference in VOC levels between cooking methods was less pronounced.
- Significantly higher levels of benzenoids, oxygenated, and heterocyclic compounds were observed with open fire cooking, particularly in closed kitchens.
- Key hazardous VOCs identified include benzene, naphthalene, phenols, and furans.
Conclusions
- Substituting traditional open fires with gasifier stoves can substantially improve household air quality by reducing hazardous VOC emissions.
- Enhancing kitchen ventilation is crucial for maximizing the benefits of cleaner cooking technologies.
- Adopting cleaner cooking solutions and improving ventilation are vital for mitigating health risks associated with indoor air pollution in developing nations.
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