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Low Cost Catalytic Biomass Cookstove for Improved Indoor Air Quality

Award Information
Agency: Department of Health and Human Services
Branch: National Institutes of Health
Contract: 2SB1ES022880-04
Agency Tracking Number: SB1ES022880
Amount: $199,968.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: NIEHS
Solicitation Number: PAR16-026
Timeline
Solicitation Year: 2016
Award Year: 2017
Award Start Date (Proposal Award Date): 2017-09-15
Award End Date (Contract End Date): 2018-08-31
Small Business Information
200 YELLOW PL
Rockledge, FL 32955-5327
United States
DUNS: 175302579
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 PAUL YELVINGTON
 (321) 631-3550
 pyelvington@mainstream-engr.com
Business Contact
 MICHAEL RIZZO
Phone: (321) 631-3550
Email: mar@mainstream-engr.com
Research Institution
N/A
Abstract

Project Summary
An estimated billion people or about one third of the world s population rely on biomass fuel for
cooking Emissions from biomass cookstoves contribute to global climate change indoor local air
quality issues and related health effects In particular indoor air quality issues related to biomass
cookstoves contribute significantly to rates of acute respiratory infection Recently developed forced air
and rocket stoves offer improvements but are unlikely to consistently meet WHO guidelines for indoor
air quality Emissions of CO unburned hydrocarbons including air toxins like formaldehyde and
particulate matter PM are especially problematic Similar to the evolution of emissions controls for
automobiles advanced biomass cookstoves have progressed to the point where inclusion of an
oxidation catalyst is the logical next step However widely used noble metal oxidation catalysts are
prohibitively expensive Instead we proposed the inclusion of a low cost alternative oxidation catalyst
that is integrated into the stove In Phase I the catalyst originally developed as a diesel soot oxidation
catalyst was synthesized characterized and tested in a specialized prototype cookstove The
prototype stove designed and tested in Phase I improved heat transfer to the cooking vessel and
included design features that allow fine tuning of the air flow fuel air mixing and heat release In
addition the prototype stove includes several design features to improve ease of use and safety The
Phase I technical approach relied heavily on computational fluid dynamics CFD rapid prototyping
and laboratory testing In Phase II the catalyst was refined further and long term stability was
confirmed Catalyst doping with additional metals was also explored A focus group conducted in
Guatemala was used to design the stove to meet the needs of potential users After incorporating
design changes a field trial was performed to gauge real world performance and user acceptance
CRP work will focus on manufacturing the stoves in developing countries where the stoves would be
sold or distributed This approach will lower manufacturing costs and provide local jobs Unlike other
catalysts the proposed catalyst requires no specialized wet chemistry methods for its synthesis
Catalyst synthesis requires only a furnace and commodity chemicals All stages of the development will
consider local manufacturability maintenance and user acceptance During the CRP we will protect
our intellectual property by applying for necessary patents We will also partner with manufacturing
companies to refine drip pan manufacture and catalyst to monolith adhesion to ensure artisanal
manufacturers can easily replicate the stove Finally we will work with local Guatemalan partners to
identify the best local markets for the stove and explore charitable and carbon credit stove
dissemination programs Relevance of the Proposed Project to Public Health
Exposure to high indoor air pollutant levels from cooking with biomass fuels is responsible for an
estimated million deaths annually and about of the global burden of disease The proposed
effort seeks to develop a low cost catalytic biomass cookstove that will substantially reduce emissions
mitigate climate change and save lives

* Information listed above is at the time of submission. *

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