دانلود رایگان پاورپوینت بحران فسفر (انگلیسی)

Phosphorus Crisis
History
Phosphorus Uses
Human Consumption
Supply
Demand
Why Now?
Fertilizer
Local Cycle
Disruption of Cycles
Phosphorus Flow
Production
Electronic Furnace
Furnace Product
Wet Process
Future Trends
Conservation
Conservation and Recovery
References

Future Trends

2009 lowest usage of P due to economy
USGS prediction
Increase to 130% 2008 value by 2013
Increasing population = increasing use of P
Fertilizer, phosphoric acid, food industry
Increase in prices could fuel research in better extraction techniques, opening up previously “inaccessible” deposits