Post on 16-Dec-2015
transcript
Value of bioslurrySteven von Eije, Energy AnalystEDIaal Green Gas
Content of presentation
• Background• Research
Design• Results• Implications
Background
• Invitation from SNV to investigate the value of bioslurry
• Tea producers (good records of production and expenditures)
• Thai Nguyen Province in Vietnam
Research questions
• Effect of bioslurry on tea production• Effect of bioslurry use on household
income
Approach
• Personal interviews (questionnaire and translator)
• 100 households• No control group (large wealth
difference) (“There is no actual demand for biogas installations, everyone who
can afford one, has one because it’s a great product.”)
• Historical and current data used
Effect on tea production
• Amount of tea produced per sao• Price per kg processed tea
• Data used in income calculation
Effect of bioslurry use on household income
• Change in production quantity?• Change in price for tea?• Change in amount of pesticide use?• Change in amount of chemical
fertilizer use?
Summer Winter0.002.004.006.008.00
10.0012.0014.0016.0018.0020.00
17.27
10.86
14.86
9.27
Difference in yield before and after bioslurry use
with bioslurry without bioslurry
Kil
og
ram
s p
er
sa
o p
er
ha
rve
st
Price per kg processed tea
€ 0,00
€ 0,50
€ 1,00
€ 1,50
€ 2,00
€ 2,50
€ 3,00
€ 3,50
Summer Winter
Current price
Previous price
Chemical fertilizer and pesticide savings
€ 134
€ 51
€ 239
€ 77
€ 105
€ 27
€ 132
€ -
€ 50
€ 100
€ 150
€ 200
€ 250
€ 300
Yearly chemical fertilizer expenditures yearly pesticide expenditures
Current
Previous
Savings
Total savings
Annual income effect in comparison to biogas installation costs
Income generation Income savings Income effect Average cost of the biogas installation
€ 0.0
€ 50.0
€ 100.0
€ 150.0
€ 200.0
€ 250.0
€ 300.0
€ 350.0
187.57545 187.57545
€ 131.6
€ 131.6
308.27855
Questions?