Tran Manh Hung

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Piloting Pyrolytic Cookstoves and Sustainable Biochar
Soil Enrichment in Northern Vietnam Uplands
Project No. 3 – V – 048
© 2005, CARE USA. All rights reserved.
Objective
Overall objective:
To address the rural energy problems and soil degradation,
and contribute to national policies on poverty reduction,
deforestation and rural development
Specific objective:
To test biochar stove-cum-soil enrichment technology and
prepare for up-scaling its application.
© 2005, CARE USA. All rights reserved.
Partners
1. CARE International in Vietnam
2. Soil and Fertiliser Research Institute (SFRI)
3. Population,
Environment
and
Development
Centre (PED)
4. Provincial Women Union in 2 provinces
5. Agriculture and Forestry Extension in 2 provinces
6. Advisory group: Professors from Cornell and New
South Wale Universities
© 2005, CARE USA. All rights reserved.
Project sites
2 Communes in Dinh Hoa district Thai Nguyen province
Beneficiaries: 300 hhs – Tay,
Nung, San Chi
1 commune in Ba Thuoc district –
Thanh Hoa province.
Beneficiaries: 150 hhs – Muong
© 2005, CARE USA. All rights reserved.
Outputs
1. Households apply biochar stoves (400 HHs), use of
fuelwood reduces 80%, and biomass 60%
2. Testing of biochar stoves
3. Study household application of biochar for soil enrichment
4. Replication and Up-scaling assessed and dissemination
plan developed
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 1: Households apply biochar stoves
1. Conducted baseline, agriculture production and
gender surveys
© 2005, CARE USA. All rights reserved.
Biochar Produced From Open Field Burning
and Open fires
Burning of
most of
the straw
occurs in
some
fields and
in others
there is
none or
very little
Soil samples from burnt and unburnt areas
© 2005, CARE USA. All rights reserved.
Many household soak
their wood and bamboo in
a nutrient mineral rich
pond before burning in a
fire.
The mineral matter that
soaks into the biomass
slows the combustion
process and makes a
large amount of biochar
and ash.
Wood is aged underwater held down by bamboo
The Context; Farmers Have Been Using Biochar for over
40 years
Rice straw biochar from the field with NPK fertiliser around the spring onion seedlings
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 1: Cont.
3. Select stove types - Redesign and retest
•
Imported 2 stove sample from india (TLUD; Sampada)
•
Produced and distributed 60 biochar stoves in March 12
•
Produced 100 improved stoves and distributed in Thai Nguyen –
May 2012
•
Produced 240 stoves in June.
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 1: Cont.
4. Train households in use of cook stove and
biochar
• 3 courses on stoves using demonstration
in 3 communes
• 6 courses on biochar making and using in
6 villages
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 2: Testing of biochar stoves
1. Import TLUD and Sampada stoves samples from
India
2. Conducted the test in the lab with participation of
advisory member from NSW.
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 2: Testing of biochar stoves
1. Survey household experiences with
biocharstoves
• Tested with group of farmers and individual
at households
• Conducted home based assessment of
stove users satisfactoriness
2. Analyse other effects of biochar stoves
• Conducted WBT and CCT tests with
farmers
• Gasses emission analysis
© 2005, CARE USA. All rights reserved.
Activities and the results
Field work
© 2005, CARE USA. All rights reserved.
Activities and the results
6 Kilns for producing biochar
were made for 6 villages
© 2005, CARE USA. All rights reserved.
Activities and the results
Kilns have been used for
making biochar for all rice trials
in the project sites
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 3: Study application of biochar
1. Conducted the surveys on soil types crop system, select
field for trials
2. Set up 12 rice trials in Thai Nguyen and Thanh Hoa
3. Set up 22 garden vegetable trials in both provinces
4. Organized 2 field workshops for rice trial in 2 provinces
5. Set up 8 rice trials in 2 provinces
© 2005, CARE USA. All rights reserved.
Key Findings: Biochar application and its effect
© 2005, CARE USA. All rights reserved.
Women Making Biochar and Biochar Composts For Field Trials
© 2005, CARE USA. All rights reserved.
Activities and the results
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 4: Assessment of up-scaling
1. Study local manufacturing
•
Many visits to local workshops Ha Tay, Bac Ninh, Hai Phong prov.
•
Contracted them for spare parts
2. Support local stove production
•
Financial support have been given to workshop in Thai Nguyen for
manufacturing stoves. Produced and distributed 160 stoves to households.
Continue produce 240 stoves, 30 fix stoves
© 2005, CARE USA. All rights reserved.
Activities and the results
Output 4: Assessment of up-scaling
3. Engage cooperation partner staff in learning activities
Organized field workshops at 2 communes and technical
sharing WS at district
Dissemination information in VTV2,
Presentation at WS in US Apr 12,
Published articles in IBI journal.
Presentation at IBI’s WS in China Sep 12
Received visits from ADB, Global Cookstove Alliance
© 2005, CARE USA. All rights reserved.
Thank you!
© 2005, CARE USA. All rights reserved.
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