Super Absorbent Polymer (SAP) and Irrigation Water Conservation
Fidelia N. Nnadi*
Department of Civil, Environmental and Construction Engineering, University of Central Florida, Orlando, Florida 32816, USA
- *Corresponding Author:
- Fidelia N. Nnadi, Ph.D
PE, D.WRE, Department of Civil
Environmental and Construction Engineering
University of Central Florida, Orlando
Florida 32816, USA
E-mail: [email protected]
Received April 19, 2012; Accepted April 21, 2012; Published April 25, 2012
Citation: Nnadi FN (2012) Super Absorbent Polymer (SAP) and Irrigation Water Conservation. Irrigat Drainage Sys Eng 1:e102. doi:10.4172/2168-9768.1000e102
Copyright: © 2012 Nnadi FN. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Human activities require more and more resources- among them water is certainly the most precious. Modern agriculture consumes almost two thirds of the water pumped in United States. For this reason, more and more people are seeking ways to conserve it. In the quest for improving water conservation in soils during irrigation, the United States Department of Agriculture (USDA) conducted studies on various materials in the early 1960s. As a result, a resin based on the grafting of acrylonitrile polymer onto the backbone of starch molecules (starch-grafting) was developed, which was known as ?Super Slurper?. At the time, the USDA gave the basic technology to several USA companies for further development. As the Japanese companies were excluded from participating, they started independent research using starch, carboxy methyl cellulose (CMC), acrylic acid, polyvinyl alcohol (PVA) and isobutylene maleic anhydride (IMA). The hydrolyzed product of the hydrolysis of this starch-acrylonitrile co-polymer gave water absorption greater than 400 times its weight and did not release water as fiber-based absorbents do. Could super absorbent polymer (SAP) be the future of irrigation water conservation?