Next Article in Journal
Optimization, Transesterification and Analytical Study of Rhus typhina Non-Edible Seed Oil as Biodiesel Production
Previous Article in Journal
Research on the Interrelation between Temperature Distribution and Dry Band on Wet Contaminated Insulators
 
 
Article

Use of Biochar-Producing Gasifier Cookstove Improves Energy Use Efficiency and Indoor Air Quality in Rural Households

1
Wangari Maathai Institute for Peace and Environmental Studies, University of Nairobi, P.O. Box 2905-0065, Nairobi, Kenya
2
World Agroforestry Centre (ICRAF), P.O. Box 30677-00100, Nairobi, Kenya
3
Department of Sustainable Development, KTH Royal Institute of Technology, Environmental Science and Engineering (SEED), Teknikringen 10B, SE-10044 Stockholm, Sweden
4
Department of Energy and Technology, The Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden
5
Office of International Programs, College of Agricultural Sciences, The Pennsylvania State University, 106 Agricultural Administration Building, University Park, PA 16802, USA
*
Author to whom correspondence should be addressed.
Energies 2019, 12(22), 4285; https://doi.org/10.3390/en12224285
Received: 3 September 2019 / Revised: 24 September 2019 / Accepted: 25 September 2019 / Published: 11 November 2019
Biomass fuels dominate the household energy mix in sub-Saharan Africa. Much of it is used inefficiently in poorly ventilated kitchens resulting in indoor air pollution and consumption of large amounts of wood fuel. Micro-gasification cookstoves can improve fuel use efficiency and reduce indoor air pollution while producing char as a by-product. This study monitored real-time concentrations of carbon monoxide (CO), carbon dioxide (CO2) and fine particulate matter (PM2.5), and amount of firewood used when households were cooking dinner. Twenty-five households used the gasifier cookstove to cook and five repeated the same test with three-stone open fire on a different date. With the gasifier, the average corresponding dinner time CO, CO2, and PM2.5 concentrations were reduced by 57%, 41%, and 79% respectively compared to three-stone open fire. The gasifier had average biomass-to-char conversion efficiency of 16.6%. If the produced char is used as fuel, households could save 32% of fuel compared to use of three-stone open fire and 18% when char is used as biochar, for instance. Adoption of the gasifier can help to reduce the need for firewood collection, hence reducing impacts on the environment while saving on the amount of time and money spent on cooking fuel. View Full-Text
Keywords: gasifier cookstove; indoor air pollution; energy use efficiency; three-stone open fire; firewood; biochar; char gasifier cookstove; indoor air pollution; energy use efficiency; three-stone open fire; firewood; biochar; char
Show Figures

Figure 1

MDPI and ACS Style

Gitau, J.K.; Sundberg, C.; Mendum, R.; Mutune, J.; Njenga, M. Use of Biochar-Producing Gasifier Cookstove Improves Energy Use Efficiency and Indoor Air Quality in Rural Households. Energies 2019, 12, 4285. https://doi.org/10.3390/en12224285

AMA Style

Gitau JK, Sundberg C, Mendum R, Mutune J, Njenga M. Use of Biochar-Producing Gasifier Cookstove Improves Energy Use Efficiency and Indoor Air Quality in Rural Households. Energies. 2019; 12(22):4285. https://doi.org/10.3390/en12224285

Chicago/Turabian Style

Gitau, James K., Cecilia Sundberg, Ruth Mendum, Jane Mutune, and Mary Njenga. 2019. "Use of Biochar-Producing Gasifier Cookstove Improves Energy Use Efficiency and Indoor Air Quality in Rural Households" Energies 12, no. 22: 4285. https://doi.org/10.3390/en12224285

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop