ENERGY STORAGE. 3. WATER. 4. FOOD. 5. ENVIRONMENT. 6. POVERTY. 7. ... G. G. The chemisorption of oxygen atoms at semiconducting surface and the ...
GEOSPATIAL WORLD FORUM Nanotechnology and Geoscience Solutions for Mitigating and Controlling Environmental Pollution Dr. Ornprapa P. Robert Assistant Professor of Environmental Science, Dept. of Environmental Science, Faculty of Science, Silpakorn University, Nakornpathom, THAILAND
Prof. Dr. Ashok Vaseashta, Norwich University Applied Research Institutes, Washington D.C.USA Strategic S&T Advisor and Fellow, U.S. Department of State, Washington
Prof. Dr. Honda Kiyoshi Int'l Digital Earth Applied science research center, Chubu Institute for Advanced Studies, Chubu University
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1. Problem recognition; What are the current needs and trends in the world? Vulnerability assessments, appropriate spatial planning and Alert Response System (ARS) are keys issues of climate adaptation.
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2. Nanotechnology and Geoscience for Mitigating and Controlling Environmental Pollution (in air and water) Technology review of Nanotechnology and GeoScience (including OGC Standard, Cloud System)
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3. Examples of Nanotechnology and Geoscience Solutions: Real time monitoring system through Wireless GIS (in air and water) Development and application in Thailand
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4. Further development on cloud and OGC based
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5. Conclusion and Recommendations
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1. What are the current needs and trends in the world?: Top Global Concerns 1. CLIMATE CHANGE 2. ENERGY STORAGE 3. WATER 4. FOOD 5. ENVIRONMENT 6. POVERTY 7. TERRORISM & WAR 8. DISEASE 9. EDUCATION 10. DEMOCRACY 11. POPULATION 2050 - 8-10 Billion People (30% increase!!!) Prof. Vaseashta, 2008
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Every day, the world uses about 85 million barrels of oil and nearly 300 billion cubic feet of natural gas. The world demand is rising and experts predict that, by 2030, total global energy demand will grow by close to 50%.
• Serious air/ water pollution in Bangkok
7-9 pm
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• Serious air/ water pollution in Bangkok Fire incident at Landfill
Flood in 2010
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• Serious air/ water pollution in Bangkok
http://air4thai.pcd.go.th/
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• 2. Nanotechnology and Geoscience for Mitigating and Controlling Environmental Pollution (in air and water) Technology review of Nanotechnology and GeoScience ( including OGC Standard, Cloud System )
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Why nanotechnology?– gas sensors perspective
Total sensing area: 2.5×10-11 m2 Total sensing area: 1.202 × 10-8 m 2
Ar ea in cr ea sed 480 t im es
Total sensing area : 2.56× 10-8 m 2
Ar ea in cr ea sed 1027 t im es
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Nanotechnology based SnO2 semiconducting gas sensors for air O 3 /NO2 (oxidizing gases) pollution monitoring
NO2 + Sn4+
(Sn5+) + NO2-
O3 + e-
O- + O2
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TO-39 header and cap
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n-type SnO2 sensor Sensitivity: 0.05-10 ppm of NO2 gas & 20-200 ppb of O3 gas e2 v Technologies Ltd. (UK)
The chemisorption of oxygen atoms at semiconducting surface and the associated potential barrier formed at each interparticle contact
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International Clean Water Institute - Research Scope Detection of Biological & Chemical Agents Pathogenic bacteria, viruses, bacterial toxins, pharmaceuticals Toxic Industrial Materials/Chemicals (TIC/TIM) Use of nanotechnology (CHEMFET), high technology - GIS/GPS Early warning, rapid screening, informed response Detection of Radiologic contamination (in water) Water Management & Risk Assessment Water Quality, Supply, treatment & distribution infrastructure Hazardous Materials Emergency Response System Information systems, tools, models, data Risk assessments and Communication Technology for Protecting Water Infrastructure Water Level Monitoring Systems Protection from Hazardous Contaminants Treat or isolate contaminants
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Vaseashta Ashok, 2014, Strategic S&T Advisor and Fellow, U.S. Department of State, Washington
Conventional water/air quality monitoring instruments
NANOSENSOR
• Very high cost (100K US$) • Bulky size • Difficult process control & mass production
Analytical instruments • Fragile • Instantaneous measurement • Seldom be used in real time
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• Excellent resolution • EPA Standard
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Fair cost (2K US$) Compact size Replaceable or Portability Easy process control & mass production Continuous measurement Low power usage (
