IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water resources and hydroinformatics : Evaluation of the concepts of virtual water and water footprint in waterresources management: a case...
Evaluation of the concepts of virtual water and water footprint in waterresources management: a case study of soybean and soybean oil
The concepts of Virtual Water (AV) and Water Footprint (WF) have been used as important indicators of water
consumption and their acceptance in literature is increasing. Virtual Water means the water embedded in final products
and Water Footprint means the water required to manufacture a product. The WF is divided into three components:
Green, Blue and Grey. The Blue WF refers to the resource consumption of surface water and groundwater, Green WF is
about the water from rain or soil moisture and Grey WF refers to the volume of water required to dilute the pollutant load.
In order to apply those concepts for water resource management, qualitative and quantitative aspects were analyzed in a
case study, to estimate the Water Footprint of an agricultural product (soybeans) and a manufactured product (soybean
oil) using the methodology WFN - Water Footprint Network. The results indicated that, on average, the WF of the
soybeans cultivated in the region of Maring¨¢, state of Paran¨¢, is 2209.4 m3/t, in which 1792.7 m3/t of Green Water
Footprint and 416.7 m3/t of Grey Water Footprint. The soybean oil WF produced in Araucaria, also located in state of
Paran¨¢, is 6201 m3/t. Virtual Water quantification flow due to imports and exports of soybeans and soybean oil in Brazil
resulted in the amount of 80 billion cubic meters of virtual water transported per year. Based on the results of evaluation
concepts of Virtual Water and Water Footprint in Brazilian water resources management, it was verified the compatibility of
that tool with the concepts present in water resources management in force in Brazil. Regarding the instrument of
permitting, it was observed that the Green, Blue and Grey Water Footprint are used to provide permits for water use for
agricultural irrigation. The Water Footprint tool is easy to use, understanding, and proved efficient for determining water
consumption. The methodology obtained reliable results and even with cultural and climatic differences, the results are
close to those found in other studies by researchers.
File Size : 1,983,767 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water resources and hydroinformatics
Date Published : 20/08/2015
Download Now