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Honsbein, Dagmar
Languages: English
Types: Doctoral thesis
Namibia and South Africa as part of Southern Africa are focussing on new technologies which on the one hand have the capacity to address energy shortages, particularly to increase power generation capacity; and on the other hand fulfil socio-economic development goals with minimal negative environmental impact. Bio-oil as a product from fast pyrolysis lends itself towards bioenergy production; to serve as a liquid fuel both for heat production and/or to fuel stationary engines or power generating equipment. Fast pyrolysis is a relatively new technology globally; and not yet introduced to Southern Africa. This research therefore describes bioenergy production via fast pyrolysis systems. The potential of the bioenergy so produced is investigated in terms of its potential to fill energy gaps, particularly power, as well as to fulfil socio-economic and environmental conservation targets in Namibia and South Africa. Namibia and South Africa possess vast wood-based biomass resources which can be converted to bioenergy via fast pyrolysis. This research models the wood-based biomass resources available for bioenergy production in Namibia and South Africa respectively; describes their physical and chemical properties and provides information on where they are located within, and how they can be harvested in a sustainable manner in Namibia and South Africa. The analysis to introduce fast pyrolysis into the Namibia and South Africa is based on an in-depth review of past experiences with pyrolysis technologies and the types of products successfully sold from various pyrolysis operations. The results of biomass modelling and description are used to model a bioenergy production system via fast pyrolysis. In Namibia fast pyrolysis operations are focusing on power generation in the Otjiwarongo and Okakarara farmland area, with a capacity of up to 20MW over a 20-year period. The power so generated is based on wood from bush encroachment only. In South Africa, the wood-based resource, i.e. alien plant species and bush encroachment, could provide communities in three provinces with at least 1MW but not more than 5MW power respectively over a period of at least 20 years. However, the introduction of new technologies and their products, such as fast pyrolysis and bio-oil for bioenergy production to Namibian and South African markets would be cumbersome. Technical and non-technical as well regulatory barriers have been identified; these need to be overcome before fast pyrolysis is accepted in the market.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Photograph 4-1 AGODA Continuous Slow Pyrolysis System at Piet Retief, South Africa ...105 Photograph 4-2 (left) CG 2000 Batch Retort System; (right) charring pot, which is inserted into the heat exchanger of the retort system, left. Carbo Group, Greytown, South Africa ............................................................................................................105 Photograph 4-3 Masonry Beehive Kiln in operation near Pietermaritzburg, South Africa; Operated by E&C Charcoal...........................................................................106 Photograph 4-4 Armco Robson Steel Kiln in operation near Pietermaritzburg, South Africa; Operated by E&C Charcoal. Two kilns are connected to each other, and share one exhaust system........................................................................................106 Photograph 4-5 Namibian 'Charcoal Drum' Kiln in use; this system is the only operational charcoal manufacturing equipment still in use in Namibia. Photo taken near Grootfontein, Namibia ..................................................................................107 Photograph 4-6 Namibian 'Charcoal Drum' Kiln being discharged after charcoal is totally cooled. Jumbo Charcoal (Pty) Ltd. Okahandja, Namibia..............................107 Czernik, S, Johnson, DK, Black, S. 1994. Biomass Energy, 7 (1-6): 187-192.
    • Bridgwater, A.V.; Peacocke, G.V.C.; Fast Pyrolysis Processes for Biomass. Renewable and Sustainable Energy Reviews; 2000, 4, pp. 1 - 73.
    • Mark Potgieter, M. 2008, 2009. Prestige Thermal Equipment, Johannesburg South Africa.
    • Emrich, W. 1985. Handbook of Charcoal Making - The Traditional and Industrial Methods.
    • Solar Energy R&D in the European Union; Series E: Energy from Biomass. Volume 7. D. Reidel Publishing Company. ISBN 9027719349.
    • Dieckmann, U. and Muduva, T. 2010. Namibia's Black Gold? Charcoal Production, Practices and Implications. Land, Environment and Development Project. Legal Assistance Centre.
    • Windhoek, Namibia. ISBN 978-99945-61-20-9.
    • Brown, R. 2009. Biochar production technology - Chapter 8 in “Biochar for environmental management.” edited by Lehmann, J and Joseph, S. pp. 128-146. Earthscan publishing. London, UK. ISBN 978-1-84407-658-1.
    • Gruber, P; Kamm, B; Kamm, M. (eds). 2006. Biorefineries - Industrial Processes and Products, Status Quo and Future Directions. Volume 1 of 2. pp. 243. ISBN: 3-527-31027-4.
    • Bridgwater, AV. 2006. Bioenergy: future prospects for thermal processing of biomass. Chapter 5 in “Future electricity technologies and systems”, edited by Jamaseb, T; Nuttall, WJ and Pollitt, MG. pp. 121-154. Cambridge University Press. Cambridge, UK. ISBN-13 978-0-521-86049-9.
    • Amonette, JE; Joseph, S. 2009. Characteristics of Biochar: Microchemical properties. Chapter 3 in “Biochar for environmental management. edited by Lehmann, J and Joseph, S. pp. 33-52.
    • Earthscan publishing. London, UK. ISBN 978-1-84407-658-1.
    • Agricultural (Commercial) Land Reform Act. 1995. Act No. 6 of 1995. Government Gazette of the Republic of Namibia. Windhoek, Namibia.
    • Communal Land Reform Act. 2002. Act No. 5 of 2002. Government Gazette of the Republic of Namibia. Windhoek, Namibia.
    • Smit, N. 2012. Is there a solution to the bush thickening problem in southern Africa - a practical assessment. Department of Animal, Wildlife and Grassland Sciences, University of the Free 310 80 81 82 83 84 85 86 87 88 89 90 Ministry of Environment and Tourism. 2010. Game Count 1968 - 2009. Government of the Republic of Namibia. Windhoek, Namibia.
    • Nature Conservation Ordinance, Ordinance 4 of 1975. 1975 and as amended. Administered by Ministry of Environment and Tourism. Directorate of Scientific Services, Chief Warden / Permit Office. Windhoek, Namibia.
    • Government of the Union of South Africa. 1964. Report of the Commission of Enquiry into the State of Affairs of South West Africa. Pretoria, South Africa.
    • Meat Board of Namibia. 2010. Annual Reports, 1923 - 2010. Windhoek, Namibia. With Annual Reports 2008 - 2010 still being interim reports as these have not been passed by the Parliament of Namibia as yet. Interim reports are available on Meat Board of Namibia website www.meatboard.org.na
    • 108 Namibia Agricultural Union (NAU). 2011. Secretariat for the Charcoal Producers Association. Some annual charcoal production and export/import data. Contact person - Ms Annetjie du Preez. Windhoek, Namibia.
    • 109 Honsbein, D. 2010. Strategy and Strategic Plan to build an Encroachment Bush Utilisation Industry in Namibia. Ministry of Agriculture, Water and Forestry and Namibia Agronomic Board. (Part II of Incentive Scheme to combat bush encroachment in Namibia - see 116.) 110 111 WSP. 2013. Prefeasibility study for biomass power plant, Namibia, Commercial Assessment.
    • Project Report for Namibia Power Limited (Nampower). Dated 2013-07-29. Windhoek, Namibia.
    • WSP. 2013. Prefeasibility study for biomass power plant, Namibia; Power Plant Technical Assessment. Project Report for Namibia Power Limited (Nampower). Dated 2012-07-31.
    • 112 Christians, C. 2010. Bush to Fuel project. Environmental Impact Assessment Report. Energy for Future (Pty) Ltd. Windhoek, Namibia.
    • 113 Central Bureau of Statistics. 2012. National Population Census 2011 - Analytical Report. National Planning Commission of the Government of Namibia.
    • 114 National Household Income and Expenditure Survey 2009/2010. 2012. Namibia Statistics Agency. Windhoek, Namibia. pp. 211.
    • 115 United Nations. 2009. Copenhagen Accord. United Nations Framework Convention on Climate Change. FCCC/CP/2009/L.7. 18 December 2009.
    • 116 Honsbein, D; Peacocke, C; Gyftopolou, E; Joubert, D. 2010. Incentive Scheme for Invader Bush Management- A Cost Benefit Analysis , and Strategic Plan for the Development of an Encroachment Bush Based Industry in Namibia; Ministry of Agriculture, Water and Forestry. Namibia
    • 117. Agricultural Geo-reference Information System http://www.agis.agric.za/agisweb/. Accessed on 12.10.2008.
    • 118 Agricultural Geo-reference Information System http://www.agis.agric.za/agisweb/. Accessed on 02.01.2012. 313
    • 119 van Niekerk, W. 2010. Renewable energy potential for South Africa. Centre for Renewable and Sustainable Energy Studies. Presentation offered at the Parliamentary Consultation on Climate Change Mitigation; South Africa. 3.9.2010.
    • 121. FAO. 2010. Global Forest Resources Assessment 2010: Country Report South Africa. The Food and Agricultural Organisation (FAO) of the United Nations. Report Number - FRA2010/195. Rome, Italy.
    • 122 FAO. 2005.Global Forest Resources Assessment 2000 - Main Report.FAO Forestry Paper No.140. Food and Agriculture Organization of the United Nations. Rome, Italy.
    • 123 124 125 126 127 128 129 Department of Water and Forestry. 2009. South Africa Forestry Statistics 1979 to 2008; Pretoria, South Africa. Also available online http://www.forestry.co.za/statistical-data/.
    • Department of Water and Forestry. 2007. South Africa Forestry Statistics, Pretoria, South Africa. Also available online http://www.forestry.co.za/statistical-data/ Department of Water Affairs and Forestry. 2007. Report on Commercial Timber Resources and Primary Roundwood Processing in South Africa, 2003/04 to 2005/06; Pretoria, South Africa.
    • Goodsmark, R. 2007 and 2008. Secretary General of Forestry South Africa; Personal discussions via email correspondence.
    • Forestry South Africa. 2008. Annual Report 2006/2007. Pretoria, South Africa.
    • Forestry South Africa. 2010. Timber Statistics 1980 to 2009 as also published in the FSA Annual Report 2010. Also available online at http://www.forestry.co.za/.
    • 138. Forestry South Africa. 2009. Annual Report 2008. Pretoria, South Africa.
    • 148. CSIR. 2003. Baseline Study on Woodlands in South Africa. Researched and report compiled by Council for Scientific and Industrial Research (CSIR), published by Department of Water Affairs and Forestry, of the Republic of South Africa. Pretoria, South Africa.
    • 149. Agricultural Research Council. 2008. Geographic distribution of Invasive Alien Plants (IAP). http://www.arc.agric.za/home.asp?pid=1033. Accessed again on 9 May 2012.
    • 150. Mucina, L; Knowles, T. 2007. Vegetation of South Africa - Biomass Production Patterns and Biofuel. Presentation at CHEMRAWN XII Conference and SANERI Biofuels Conference 2007. Stellenbosch, South Africa.
    • 151. Department of Water Affairs and Forestry. 2006/7 to 2007/08. Reports on Commercial Timber Resources and Primary Roundwood Processing in South Africa, 154 Statistics South Africa. 2008. Community Survey 2007 - Statistical Release Basic Results Municipalities. Pretoria, South Africa.
    • 155 Department of Agriculture, Forestry and Fisheries. 2008. Abstract Agricultural Statistics.
    • 156 von Malitz; Scholes, RJ. 1995. The burning of fuelwood in South Africa: when is it sustainable? Environmental Monitoring and Assessment 38: 243-251; Kluwer Academic Publishers.
    • 157 Selabe & Mokgopo Consultants cc. 2007. Assessment of the firewood market of Gauteng and the origin of protected tree firewood products sold. Department of Water Affairs and Forestry of the Government of South Africa. Pretoria; South Africa.
    • Ellegård, A; Chidumayo, E; Malimbwi, R; Pereira, C; Voss, A. 1998. Charcoal Potential in Southern Africa (CHAPOSA Project). Stockholm Environment Institute. Contract No.
    • ERBIC18CT980278.
    • 159 Shackleton, CM. 1998. Annual production of harvestable deadwood in semi-arid savannahs, South Africa. Forest Ecology and Management Volume 112. pp. 139 - 144.
    • Ward, D. 2005. Do we understand the causes of bush encroachment in African Savannahs? Department of Conservation Ecology; University of Stellenbosch, South Africa. 316 158 165 Palmer, AR. 2008. Research Associate. Institute for Water and Environmental Resource Management, University of Technology Sydney, Australia. Personal communications.
    • Watson, H. 2008. University of KwaZulu Natal, South Africa; personal communications.
    • 176 Department of Water Affairs and Forestry (DWAF). 2007. Working for Water Programme Annual Reports 2004 - 2007. Pretoria, South Africa
    • 177 Turpie, J. 2004. The role of resource economics in the control of invasive alien plants in South Africa. South African Journal of Science, 100: 87 - 93.
    • 181 www.usda.gov on the US' Department of Agriculture Renewable Energy Special Projects. http://www.usda.gov/wps/portal/usda/usdahome?contentidonly=true&contentid=renewable_en ergy.xml. “Wood to Energy”. Accessed on 15 August 2007 and 22 April 2012.
    • 182 Hellwinkel, C. de la Torre-Ugarte, D. English, B. Jensen, K. 2007. Biofuels in POLYSYS. Agricultural Policy Analysis Centre; University of Tennessee, http://www.agpolicy.org,
    • 183 Government Gazette. 2004. Act 23 of 2004. Act on the establishment of the National Commission for Research, Science and Technology. Namibia.
    • 184 Hume, D. 2006. International Carbon Conversions Ltd and Carbon Conversions SA (Pty) Ltd. Personal discussions, 18 December 2006.
    • 185 Sugar Milling Research Institute. 2004. Assessment of Commercially Exploitable Biomass Resources: Bagasse, Wood & Sawmill Waste and Pulp in South Africa. Capacity Building in Energy Efficiency and Renewable Energy Project Report No. 2.3.4 - 20. Department of Minerals and Energy of the Government of the Republic of South Africa.
    • 186 Hellwinkel, C; de la Torre Ugarte, D; English, B; Jensen, K. 2007. Biofuels in Polysys; Agricultural Policy Analysis Center; University of Tennesseee, http://www.agpolicy.org.
    • 187 Farrell, AE; Plevin, RJ; Brian T. Turner, BT; Andrew D. Jones, AD; O'Hare, M. Daniel M. Kammen, DM. 2006. Ethanol Can Contribute to Energy and Environmental Goals - EBAMM core description. Science Magazine. Vol. 311; pp. 206-208.
    • 188 Gruber, P; Kamm, B; Kamm, M. (eds). 2006. Biorefineries - Industrial Processes and Products, Status Quo and Future Directions. Volume 1 of 2. pp. 19. ISBN: 3-527-31027-4.
    • Gaylard and Associates CC - Engineers 3a1n9d Equipment Suppliers. 1985. Gaylard Batch
    • 203 Blom, B. 2006. Engineer at Nuclear Energy Corporation (NECSA) of South Africa. Palindaba, South Africa. Personal discussions, February 2006.
    • 204 Altran Foundation for Innovation. 2006. 2002 Award - Technological innovation for developing countries. The Pyro-7 was entered for this award. Guy Reinaud, President of the Association Pro-Natura International France was awarded the 1st prize for “Biomass Charcoal”. Accessed from
    • 205 Siemons, RV. 2002. A development perspective for biomass fuelled electricity generation technologies: economic technology assessment in view of sustainability. PhD thesis. University of Amsterdam, Netherlands. ISBN 90-365-1805-9
    • 206 Siemons, RV. 2007. Personal discussions on occasion of visit to Stellenbosch, South Africa, April 2007.
    • 207 Holley, C. 2006. Owner and CEO of E&C Charcoal. Pietermaritzburg, South Africa. Personal discussions, 23 August 2006 and visit of the plant 20 December 2006.
    • 208 Burdon, IP. 2003. Test bed to Turnkey - the introduction of new thermal renewable energy technologies. In „Pyrolysis and Gasification of Biomass and Waste”. Bridgwater, AV (eds). CPL Scientific Publishing Services Ltd. UK. pp 22. ISBN 1-872691-77-3.
    • G:ENESIS. 2005. Part III: Technical Notes 3a2n1d Appendices; Department of Water Affairs and 230 Statistics South Africa. 2012. Energy Accounts for South Africa: 2002-2009. Discussion document: D0405.1.1.
    • Ministry of Agriculture, Water and Forestry. 2011. Agricultural Statistics, 1983 - 2010.
    • 324 Government Gazette. 2007. Labour Act (Act 4 of 2007). Ministry of Labour and Social Welfare. Windhoek, Namibia.
    • 325 Government Gazette. 2002 Labour Relations Act (Act 11 of 2002). Department of Labour and Social Welfare. Pretoria, South Africa.
    • 326 International Standards Organisation. 2010. ISO 26000: 2010, Guidance on social responsibility. Geneva, Switzerland. ISBN 978-92-67-10538-3.
    • 327 Gerrard, AM. (editor) 2000. A Guide to Capital Cost Estimating, 4th Edition. UK Institution of Chemical Engineers.
    • 328. Bridgwater, AV. 1994. Capital Cost Estimation Procedures. Aston University, UK.
    • 329 Thuesen, GJ; Fabrycky, WJ. 1989. Engineering Economy. Prentice-Hall International Editions. Pp. 373-374. ISBN 0-13-277450-X.
    • 330 Bradley, D. 2006. European Market Study for BioOil (Pyrolysis Oil). Climate Change Solutions under IEA Bioenergy Task 40- Bio-trade. Accessed from http://www.canbio.ca/upload/documents/ on 30 October 2014.
    • 331 Galinato, SP, Yoder, JK. 2009. Economic Assessment of Pyrolysis Production and Biochar Application. Based on report “Use of Biochar from the Pyrolysis of Waste Organic Material as a Soil Amendment.” Final Project Report. Centre for Sustaining Agriculture and Natural Resources, Washington State University, Wenatchee, WA.
    • 332 Biomass is competitive with heating oil costs. 2007. US Department of Energy; Energy Efficiency and Renewable Energy. Accessed from http://www1.eere.energy.gov/bioenergy/pdfs/pyrolysis_levine.pdf on 30 October 2014.
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