Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Changes in Soil Water Content and Drainage Characteristics with Superabsorbent Polymers Amendment

고흡수성 수지 처리에 따른 토양 수분 함량과 배수 특성 변화

  • Yun, Tae-Kang (Department of Rural Systems Engineering, Seoul National University) ;
  • Son, Young-Hwan (Department of Rural Systems Engineering and Research Institute for Agriculture & Life Sciences, Seoul National University) ;
  • Park, Jae-Sung (Department of Rural Systems Engineering, Seoul National University) ;
  • Kim, Dong-Geun (Department of Rural Systems Engineering, Seoul National University)
  • Received : 2016.04.23
  • Accepted : 2016.05.10
  • Published : 2016.05.31
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Abstract

Superabsorbent Polymers (SAPs) are hydrophilic synthetic polymers which could absorb water by hundreds of their own weight. They are used for multiple purpose including hygienic goods, soil conditioners, and hospital supplies. It is necessary to investigate the standard of their use including the amendment rate for soil application in agricultural fields. It is also important to understand their effects on the soil water content and engineering characteristics. The objective of this study is to find the water absorbing capacity and reusability of SAPs, and the characteristics of water release and effect of them on soil water content and engineering characteristics. In the result, SAPs per unit weight (1 g) used for this research could absorb about 200 g of water in max. The water absorbing capacity decreased after SAPs were used repeatedly. Released water of SAPs could provide the soils with about 9 % of the soil water content. Soil water content increased with decreasing distance from the SAPs. The distance of release was spreaded out with increasing water absorbed of SAPs. Finally, when a drainage and the capacity of soil water content were considered, it is recommended to amend the SAPs with soil by less than 0.25 %.

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References

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