Interactive Effects of Super Absorbent Polymer and Nitrate Nitrogen

Abstract:

The superfluous application and low use efficiency of chemical nitrate nitrogen fertilizer account for the nitrogen pollution of soil and water, threatening human’s health. In order to raise the fertilizer use efficiency, prevent from non- point pollution and nitrogen pollution of groundwater, and select superior material, five different kinds of super absorbent polymer (SAP) were selected as the objects. Through the analysis of the characteristics change of water and fertilizer absorbing of the five SAPs within different concentration of NO3--N, and the discussion of interactive effects between the SAPs and NO3--N, it is showed that: the water absorbent ability of all kinds of SAP exhibits a negative relationship with the concentration of KNO3 by decreasing of more than 50%. For all the five types of SAPs, the type of polyacrylate shows the strongest ability of water absorbing in all kinds of KNO3 concentration and the type of humic acid- polyacrylate is least affected by saline solution. The type of PAM- inorganic mineral SAP does well in nitrogen absorbing, whose absorbing amount linearly increases with the KNO3 concentration increasing, while the other types of SAP shows no obvious ability for nitrogen absorbing.

• Periodical: Advanced Materials Research (Volume 598)
• Pages: 323-327
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.598.323
• Online since: November 2012
• Authors: Jia Zhu Li Li*, Zhan Bin Huang, Yuan Yuan Feng, Wei Chen
• Keywords: Absorbent Polymer, Interactive Effect, Nitrate Nitrogen

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