Science Target Conference Systems, Ajman 4th International Environment Conference 2016

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Assessment of Water Footprint and Economic Water productivity of Major Biofuel Crops in Thailand
Russel Mohammad Fazlul Haque

Last modified: 2015-12-22

Abstract


This study aims to access the water footprint (WF) and economic water productivity (EWP) of biofuel crops sugarcane, cassava and oil palm in Rayong, Loei and Kanchanaburi provinces of Thailand by using the water footprint methodology. The water footprint has been estimated in parts: WF of biofuel crops, WF of biofuel and WF of biofuel energy. Sugarcane, cassava and oil palm are three main biofuel crops in Thailand. The WF of these three biofuel crops is estimated by using the crop water requirement method of CROPWAT 8.0 model. Besides, the EWP of the aforementioned biofuel crops is also calculated in order to explore economic benefit of water use. Almost all of the energy crops have shown their over reliance on rainwater with more than 50% consumption of green water. The WF of oil palm is higher compared to sugarcane and cassava in all the three provinces. Sugarcane is the most water efficient biofuel crop in all the three provinces where as the WF of bio-ethanol from cassava shows more water efficiency compared to other two crops. In the energy context, cassava consumes least water to produce 1 GJ of energy. On the other hand, the economic water productivity (EWP) of oil plam (4.8937 US$/kg) is about 10 times and 11 times more than sugarcane (0.4962 US$/kg) and cassava (0.4343 US$/kg) respectively.