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Human Sewage Plant As A Potential Biofuel


Kaalindi Misra

on 9 September 2012

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Transcript of Human Sewage Plant As A Potential Biofuel

Human Sewage: Potential biofuel. By Kaalindi Misra CONTENTS Introduction
Biomethane?! Why, Not?
Questions? BIOFUEL is a renewable energy source derived from organic matter (biomass). Alternative fuel to PETROLEUM Solution for Global Climate Change Sustainble Regrown Productive with less negative impact Converting crops into biofuels = less produce for food consumption Biomethane?! Why, not? Top 10 Sources of Biofuels are: 1. Cellulose 2. Algal Oil 3. Corn 4. Soy 5. Sugar Cane 6. Camelina & Jatropha 7. Rapeseed 8. Biomethane 9. Animal Fat 10. Paper Waste & Burns cleaner than anyother gases in use Can be used in all forms of vehicles with spark ignition and compression ignition engines with a combination of diesel and biomethane Can be used in natural grids (injection) and filling stations Can provide electricity Produces heat which is transferred back to the digester for anaerobic digestion Resolves waste management issues (Biomaster, 2011) CO 2 -neutral Increase such crop production = deforestation in certain areas Biodiesel = 10% more nitrogen oxide than natural diesel Deforestation leads to increase in emissions of climate change gases For sources such as Cellulose, Algal Oil and Paper waste: More investment is needed to develop the proper technology Cons for using sources like Camelina and Jatropha: Adverse effects on native ecosystems,displacement of food crops for their production, or growth inhibitance for other crop production on the same soil Process Pro-Cambi! Conclusion References Questions Cambi plants have been installed at 28 places in the world including countries like Australia, Japan, Chile, U.S.A., Sweden, Finland, Denmark. 10 plants in U.K and Ireland collectively Enhanced biogas production
Improved dewaterability after digestion 50%-100%
Pasteurization and stabilization of final biosolids product/cake
Digested sludge has negative odour
High-energy efficient and reliable process
Lower retention time and higher dry-solids content in digesters
Robust anaerobic digestion process
Compact design easy to retrofit
Existing digester assests can still be used without further investment Why Cambi? ... small A turnkey biogas plant to treat 50,000 t/a of municipal waste
The plant will produce 27,000 t/a of nutritious fertilizer for 100 medium sized farms
Replacing diesel with upgraded biogas to fuel 135 buses
Reducing CO2 emissions by 10,000 tonnes per year
Biogas in buses means cleaner air and less noise for Oslo residents
Total Disinfection, Stabilization and Pathogen free end-product
Alternative fuel for large fleets such as Buses, Taxis and Trucks
Will produce more than 10 GWh of green electricity annually Biomaster [online]. (2011) [Accessed 29th February, 2012]. Available from: <http://www.biomaster-project.eu/index.php?ID1=4>.
Corbett, Megan (2010). Discovery News [online]. [Accessed 1st March, 2012]. Available from: <http://news.discovery.com/tech/top-ten-sources-biofuel.html>.
Cambi [online]. (2011) [Accessed 1st March, 2012]. Available from: <http://www.cambi.no/wip4/plant.epl?cat=10646>.
Green Net |Finland (2008). Sludge Treatment - Nordic Waste Water Treatment [online]. [Accessed 1st March, 2012]. Available from: <http://www.greennetfinland.fi/fi/images/4/4b/Nordic_sludge.pdf>.
Bendfeldt, E;Collins, E.R. Jr.; Ignosh, J; Ogejo, J.A.; Wen, Z (2009). Biomethane Technology [online]. [Accessed 1st March, 2012]. Available from: <http://pubs.ext.vt.edu/442/442-881/442-881.html>. Crop Biofuels Plant-Based Biofuels Leftover Biofuels Technologically challenged Biofuels (Corbett, 2010) (Corbett, 2010) (Cambi, 2011) (Cambi, 2011) (Green Net Finland, 2008)
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