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Hossain, A.K.; Serrano, C.; Brammer, J.; Omran, A.; Ahmed, F.; Smith, D.I.; Davies, P.A. (2016)
Languages: English
Types: Article
Digestate from the anaerobic digestion conversion process is widely used as a farm land fertiliser. This study proposes an alternative use as a source of energy. Dried digestate was pyrolysed and the resulting oil was blended with waste cooking oil and butanol (10, 20 and 30 vol.%). The physical and chemical properties of the pyrolysis oil blends were measured and compared with pure fossil diesel and waste cooking oil. The blends were tested in a multi-cylinder indirect injection compression ignition engine.Engine combustion, exhaust gas emissions and performance parameters were measured and compared with pure fossil diesel operation. The ASTM copper corrosion values for 20% and 30% pyrolysis blends were 2c, compared to 1b for fossil diesel. The kinematic viscosities of the blends at 40 C were 5–7 times higher than that of fossil diesel. Digested pyrolysis oil blends produced lower in-cylinder peak pressures than fossil diesel and waste cooking oil operation. The maximum heat release rates of the blends were approximately 8% higher than with fossil diesel. The ignition delay periods of the blends were higher; pyrolysis oil blends started to combust late and once combustion started burnt quicker than fossil diesel. The total burning duration of the 20% and 30% blends were decreased by 12% and 3% compared to fossil diesel. At full engine load, the brake thermal efficiencies of the blends were decreased by about 3–7% when compared to fossil diesel. The pyrolysis blends gave lower smoke levels; at full engine load, smoke level of the 20% blend was 44% lower than fossil diesel. In comparison to fossil diesel and at full load, the brake specific fuel consumption (wt.) of the 30% and 20% blends were approximately 32% and 15% higher. At full engine load, the CO emission of the 20% and 30% blends were decreased by 39% and 66% with respect to the fossil diesel. Blends CO2 emissions were similar to that of fossil diesel; at full engine load, 30% blend produced approximately 5% higher CO2 emission than fossil diesel. The study concludes that on the basis of short term engine experiment up to 30% blend of pyrolysis oil from digestate of arable crops can be used in a compression ignition engine.
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    • EU. Climate Action - EU greenhouse gas emissions and targets. 2014; Available from: http://ec.europa.eu/clima/policies/g-gas/index_en.htm.
    • EU. 2030 framework for climate and energy policies. 2014; Available from: http://ec.europa.eu/clima/news/articles/news_2014102801_en.htm.
    • WRAP, Waste Protocols Project - Anaerobic Digestate. 2009.
    • Växtkraft - Process description of the Biogas plant in Västerås. 2006.
    • Kocar, G., The use of anaerobically digested slurry combined with natural zeolite for rapeseed production. Energy Education Science and Technology Part A: Energy Science and Research, 2012. 30(1): p. 545 - 552.
    • Klopotek, A. Krieg, H. Euler, Biogas Digest, Volume II, Biogas-Application and Product Development. 1999.
    • LUKEHURST, C.T., FROST, P., SEAD, T. A., IEA Bioenrgy Task 37- Utilisation of digestate from biogas plants as biofertiliser. 2010.
    • Hailong Li, J.L., Eva Nordlander, Eva Thorin, Erik Dahlquist, Li Zhao, Using the Solid Digestate from a Wet Anaerobic Digestion Process as an Energy Resource. Energy Technology, 2013. 1: p. 94 - 101.
    • Daegi Kim, K.L., Ki Young Park, Hydrothermal carbonization of anaerobically digested sludge for solid fuel production and energy recovery. Fuel, 2014. 130: p. 120 - 125.
    • Murakami, T., et al., Combustion characteristics of sewage sludge in an incineration plant for energy recovery. Fuel Processing Technology, 2009. 90(6): p. 778-783.
    • Rigby, H., Smith, S. R., New Markets for Digestate from Anaerobic Digestion. 2011.
    • Rulkens, W., Sewage Sludge as a Biomass Resource for the Production of Energy: Overview and Assessment of the Various Op9ons†. Energy & Fuels, 2007. 22(1): p. 9-15.
    • Shane M. Troy, T.N., James J. Leahy, Peadar G. Lawlor, Mark G. Healy, and W. Kwapinski, Effect of sawdust addition and composting of feedstock on renewable energy and biochar production from pyrolysis of anaerobically digested pig manure. Biomass and Bioenergy, 2013. 49: p. 1-9.
    • Werther, J. and T. Ogada, Sewage sludge combustion. Progress in Energy and Combustion Science, 1999. 25(1): p. 55-116.
    • Yue, Z., et al., A sustainable pathway of cellulosic ethanol production integrating anaerobic digestion with biorefining. Biotechnology and Bioengineering, 2010. 105(6): p. 1031-1039.
    • Barth, T., Kleinert, M., Motor fuels from biomass pyrolysis. Chemical Engineering & Technology, 2008. 31(5): p. 773-781.
    • Jones, S.B., Holladay, J. E.,Valkenburg,C., Stevens, D. J., Walton, C. W., Kinchin, C. .et al., Production of gasoline and diesel from biomass via fast pyrolysis, hydro-treating and hydrocracking: a design case. 2009, US Department of Energy,Pacific Northwest NationalLaboratory.
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