“Biogas Based Chain Business: A Road to Sustainable Rural Development” Presenting Author- Md. Amimul Ehsan Dept. of Electrical & Electronic Engineering Chittagong University of Engineering & Technology 1 ICDRET'2016 || PID-49 4 th International Conference on The Development of Renewable Energy Technology
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Biogas Based Chain Business: A Road to Sustainable Rural Development
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“Biogas Based Chain Business: A Road to Sustainable Rural
Development”
Presenting Author-
Md. Amimul EhsanDept. of Electrical & Electronic Engineering
Chittagong University of Engineering & Technology
1ICDRET'2016 || PID-49
4th International Conference on The Development of Renewable Energy Technology
Co-Authors
ICDRET'2016 || PID-49 2
C. K. DasDept. of Electrical & Electronic Engineering
Chittagong University of Engineering & Technology
Mahadi HasanDept. of Biomedical Science
City University of Hong Kong
Outline • Literature
• Rural Life Scenario
• Biogas Business Concept
• Cyclic Cash Flow
• Sustainable Development
• Energy demand of a standard home
• Design considerations
• Economics
• Key benefits & summary
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Literature
“…A newly developed mobile biogas storage container, the biogas backpack, now facilitates the transport of biogas and thus its sale. This provides the opportunity to produce biogas in one central, technically more advanced biogas plant rather than in many individual small-scale, low productive digesters….”
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Rural Life Scenario
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Trends
-Backyard farming: cattle and poultry
-Poultry business
-Daily household organic waste
-Cooking: Wood
-Household lighting: Kerosene burner
Challenges
- Waste management
- Kitchen environment and women’s health
- Global warming
- Child education
Biogas Business Concept
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Biogas
Fertilizer
Cow &
Poultry Farm
Household
Cow &
Poultry
Waste
Collection
Biogas
PlantBusiness
Residential
Electricity
Cooking
Gas
Agriculture
Fishing
Organic
Waste
Cow &
Poultry
Waste
(chain… social business)
Cyclic Cash Flow
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Cooking Gas
Electricity
Fertilizer
House Hold
Farm Owner
Waste
Biogas Plant
Money Flow
Chain
Sustainable Development
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Clean Environment
Fertilizer
Agriculture
Kerosene Cost
Saving
ElectricityChildren’s
Education
Increased
Production
Fishing
Cooking
Gas
Cooking Wood
Cost Saving
Female Health
Waste
Selling
Extra Financial
Support
Waste
Management
Sustainable
Rural
Development
Energy demand of a standard home
…Survey in rural Chittagong (Unosottur Para, Raozan)-
• Cooking wood cost is 800-1,000 BDT/month (≈10~13 USD)
• Kerosene cost per month is 400-600 BDT (≈5~8 USD)
Therefore, every family saves an amount of 1,200-1,600 BDT (≈15~21 USD) per month only from cooking and lighting sectors
• 2.5 hour (Hr) cooking with a two-burner stove requires 2 m3 biogas
• 6 m3 biogas is necessary per day for both cooking and electricity
• Total installation cost: 1.95 crore BDT (≈0.253 million USD) [plant construction cost (digester, inlet and hydraulic chamber), pipeline and purifier cost, electricity generation, transmission and protection cost]
• Repairing and overhauling (top and major overhauling) costs of generators: 52
lac BDT (≈0.67 million USD)
- Top overhauling: 15% of generator cost (after 10,000 hours of operation)
- Major overhauling: 50% of generator cost (after further 10,000 hours of operation)
• Waste cost for 20 years of operation is about 43 crore BDT (≈5.6 million USD)
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Economics (contd.)
• 262,500 ton slurry output in 20 years & processing cost is 26 crore BDT
(≈3.37 million USD).
• To operate the plant effectively some personnel are mandatory in permanent basis and time to time temporary labors are too requisite.
- Total waging cost for plant operation and maintenance is calculated 134,000
BDT (≈1750 USD) per month and so 3.2 crore BDT (≈0.415 million USD) for 20 years
Total Life cycle plant cost: 75 crore BDT (≈9.73 million USD)
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Economics (contd.)
• Income of plant authority (LC):
- Total electric bill: 6 crore BDT (≈0.778 million USD) including service charge
- Cooking gas bill: 3.72 crore BDT (≈0.48 million USD)
- Fertilizer selling outcome: 110 crore BDT (≈14.3 million USD) [3 & 5 BDT/kg (≈0.04 & 0.06 USD) for fresh slurry and bio-fertilizer respectively]
Net LC income (plant): 120 crore BDT (≈15.56 million USD)
….seems profitable
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Economics (contd.)
Waste selling income of each individual-
Household individuals: 10,000 BDT (≈130 USD) per annum
Small scale poultry farm: 60,000 BDT/month (≈780 USD)
Large scale poultry farm: 300,000 BDT/month (≈3900 USD)
Small scale cow farm: 9,000 BDT/month (≈117 USD)
Large scale cow farm: 90,000 BDT/month (≈1170 USD)
Food hotel: 1,800 BDT/month (≈24 USD)
Local market: 9,000 BDT/month (≈17 USD)
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Key benefits other than economics• Proper waste management
• Environmental safety
• Healthy cooking
• Child education prospect
• …& more to discover
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Future prospects
• Detailed techno-economic analysis for a certain region
• Mathematical model development
• Proto type …or pilot project implementation (!!!Fund!!!)
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Summery
Social business
Bidirectional cash flow
Environmental safety
Sustainable development
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Thank You!
Md. Amimul Ehsan
Final year undergrad student
Dept. of Electrical and Electronic Engineering
Chittagong University of Engineering & Technology (CUET)