The First High-Level Biofuels Seminar in Africa 30 July – 1 August 2007, Addis Ababa, Ethiopia

1. by AFRICAN UNION UNIDO A joint activity of the African Union Commission, Brazilian Government and UNIDO. The First High-Level Biofuels Seminar in Africa 30 July – 1 August 2007, Addis Ababa, Ethiopia Presentation on Industrial Application of Biogas Technology in Africa JOHN AFARI-IDAN, An International Expert - Biogas Technology in Africa Team Leader, ARSCP Biofuel Task Team For Africa

2. Feed Stocks • Industrial solid and liquid Wastes • Agricultural residues and manure • Municipal Solid Waste • Domestic and Commercial Liquid waste • Health Care Waste • Human wastes (normally considered as part of domestic waste generation in industry)

3. Sources of Feed Stocks (1) • Restaurants and Hotels • Tourist Areas • Stadia • Educational Institutions • Police, Military and Prisons Barracks • Municipal Sewage

4. Sources of Feed Stocks (2) • Meat and Agro-processing Industries • Abattoirs • Fish and Animal Husbandry • Real Estates

5. Conversion Technologies • Broad Classification of Digester Types • Covered Lagoons • Balloon Plants • Fixed-Dome Plants • Floating Drums • Design Characteristics • Continues Feed • Batch Feed

6. Digester Characteristics

7. The African Experience • Kenya • Lesotho • South Africa • Namibia • Sudan • Nigeria • Burundi • Rwanda • Botswana • Uganda • Ghana • Guinea

8. Integrated Approach - BTWAL the Ghanaian Experience • Segregates hi-BOD process effluent at source • Segregates degradable fractions of municipal solid wastes and solid process wastes at source • Integrates all bio-wastes and sewage in the anaerobic digesters to maximize biogas production(Sewage providing the best substrate for the indigestion process) • Recycles treated wastewater for less critical application, water conservation, liquid fertilizer production for periurban organic framing

9. The BTWAL Technology Components • The Bio-digester (s) • The Expansion Chambers • Filtration Beds • UV Water Treatment System • Treated Effluent storage • Biogas Recovery Balloon • Biogas end-use accessories

10. A large scale application for an under-construction university in Ghana (15,000 student population)

11. Sections of the University Building under Construction

12. Completed biogas plant -Health-care Industry

13. Completed biogas plantFood Processing Industry THE BIOGAS PLANT AT THE NESTLE FACTORY, TEMA - GHANA

14. Biogas Use – Cooking at the Valley View University, Accra

15. BIOGAS ELECTRICITY GENERATOR at the Abattoir in Ferkessedougou, Ivory Coast 15KW BIOGAS GENERATOR POWER UNIT

16. REFRIDGERATION

17. Biogas Technology Opportunities • Problems of current waste handing practices • Increasing need of alternative energy sources to address energy security • Potential for methane emissions reduction and climate mitigation technologies • Sustainable use of nutrients and energy resources in waste materials

18. Potential Industrial Application of the BTWAL Approach • Abattoir • Food industry • Health-care Industry • Housing Industry • Hospitality Industry • Sewage Treatment Plant

19. The Abattoir

20. Hospital Industry

21. Housing Industry

22. Hospitality industry

23. Substitution of Waste Water Treatment

24. Substitution of raw Sewage disposal into wetlands and large marine (e.g. the sea) ecosystem

25. Substitution of Industrial Waste Treatment

26. Substitution of Septic Tanks in Real Estate Development

27. Substitution of Extended Aeration Plant

28. Municipal Solid Waste65% of which is Biodegradable

29. Broken-Down Aerators (STP)

30. Cesspool Emptying

31. SUSTAINABILITY INDICATORS • Meets the 3R Principles • Reduction of water use at source • Recovery of degradable organic fractions of solid waste • Recovery of residual energy in bio-waste for biogas generation • Recycle of 60% total water component of digester feed • Re-use the energy resources

32. DIRECT ECONOMIC BENEFITS • Avoid Cost of Constructing Septic Tank for new projects • Reduce cost of transportation to landfills • Reduce portable water use at source from cistern modification • Recycle and Reuse treated wastewater for: • WCs re-flushing • Irrigation and land scaping • Equivalent LPG of Biogas for cooking and refrigeration of essential drugs

33. Environment, Health and Sanitation Benefits • Avoidance of odour nuisance from Septic Emptying and off-site transportation • Elimination of seasonal overflows of septic tanks • Avoidance of off-site dumping of Hi-BOD load sewage in ecosystems • Recovery of residual energy resource in sewage for energy security • Water conservation for water security • Contribute to meeting MDG goals for poverty reduction

34. Barriers to Industrial Applications • Technical • Human Resource • Financial • Communication

35. PLAN OF ACTION FOR PENETRATION OF BIOGAS TECHNOLOGIES APPLICATION • Communication and Awareness creation • Institutional Framework and capacity building • Technical Capacity Building • Design and construction • Large Scale pre-Casting of modular digesters • Knowledge Networking and Transfer • Financial Resource Mobilization • Patenting and Intellectual Property Right • Demonstration Projects for integrated waste treatment with Biogas Power • generation

36. THANK YOU MERCI