about meiwa co., ltd.3)_japan...tokyo ishikawa 2.5hours about meiwa co., ltd. a technology-oriented...
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TokyoIshikawa
2.5hours
About Meiwa Co., Ltd.
A technology-oriented company developing environmental plants
- Year of Incorporation: 1965 , - Number of staff: About 50- Location: Kanazawa City, Ishikawa Prefecture, Japan
- Main business area: Environment / Agriculture / Renewable energy- Main products: Biomass carbonization plant / Effluent treatment facility /
Methane fermentation system / Dust collector, etc.
- Project partners: University of Tokyo, JICA, Ministry of the Environment, etc.- Participated conference: TICAD VI Follow-up conference (Mozambique),
TICAD VI Japan Fair (Kenya), UNIDO Low Carbon Technology Workshop (Kenya)
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Meiwa’s Technology:Biomass Carbonization -General
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Unutilized Biomass
Drought-Resilient
Agriculture
Renewable Fuel
Biochar
Carbonization plant
Drought = losing everything
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Challenge of Africa: Climate Change
Average annual temp.
increasing
Gap between Tmax & Tmin
widening
Systematic decrease in
annual rainfall
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1991 2016
Challenge of Africa: Climate Change
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• Land degradation (low water holding ability)• Maize yield to reduce by up to 45% (Adhikari et al., 2015)
Soil microbial activity
Water retention
Nutrient(N, P, K, etc.)
Nutrient retention
Nutrientassistance
Repellent
Carbonization
Wood vinegar=organic acid
Biochar=porous
→Drought resilient
Cattle disease control
Meiwa’s Technology:Biochar -As powerful soil conditioner
→ Health?
→ Livestock?6
Effect of ‘Wild’ biochar in Kenya
Works for Climate-resilient agriculture
Healthier
Dwarfed
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Then, how can we get biochar?
Carbon box series: batch-type carbonizer
Strategically downgraded
• Simple to use• Quick (2-3days→8hours)• Energy efficient• Solar powered• Smokeless*Pre-drying required
Deployable anywhere
Biochar out
Dried biomass in
Fuel in
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Meiwa’s Technology:Biomass Carbonization -Mechanism
~Bagasse~
Unutilized biomass: Neglected resources
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~Sludge~
Unutilized biomass: Neglected resources
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~Sludge~
Unutilized biomass: Neglected resources
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~Vegetable residue~
Try & error, taking place in Kenya
Organic waste collection & screening
Pre-processing (drying, briquetting, shredding, etc.)
Carbonization Agricultural experiment withBiochar and wood vinegar
(Post-processing)16
Process to establish resource circulation system
Organic waste collection
Raw material screening
Pre-processing(e.g. Drying, shredding, briquetting)
Carbonization
Biochar Wood vinegar
AgricultureClean fuel Livestock? Repellent?
Distributors
End users
Distributors
End users
Distributors
End users
Distributors
End users
Analysis, R&D, test marketing etc.
to be done with partners
• What are major sources of raw material?
• Waste separation at source? Any incentive?
• Pollutants (heavy metals, plastics, etc.) to be avoided
• Simple and optimized methods/systems in Kenya?
Key to success = various partners
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Meiwa
Local government
Local private partner
Farmers
Revenue from biochar sales
Case study in Japan- for human sludge
Human sludge processing(incl. machineoperation)
Plant operation Biochar distribution
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Biochar : For Climate resilient agriculture
High water retention
Nutrient retention and uptake
Microbial Activation
OwnNutrient
NP
N
PP
P KKK
K
Biochar
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• Less water• Less top dress• Strengthen stems,
etc.
Try & error, taking place in Kenya
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Process to establish resource circulation system
Partnership
Introducing technology from Japan
Workshop with county government
Biochar experiment with university & farmer
(, etc.)