Preliminary Study of Preparation and Properties of Activated K-Feldspar-Filled Hydrogel Materials

Abstract:

This study preliminarily evaluated water absorbency and potassium release property of a novel hybrid hydrogel material as a potential hydrogel K-fertilizer. This hybrid hydrogel material was prepared by introducing activated K-feldspar powder into starch-graft-PAA hydrogel networks via aqueous solution polymerization. The mineral phases were characterized by X-ray diffraction (XRD) patterns and the water absorbencies of the hybrid hydrogel along with potassium release property were preliminarily studied. The results indicate that the optimum extraction rate of potassium is 92.14% using the additive of NaCl at 950°C and 2h. The hydrogel was prepared at the amount of starch, cross-linker, initiator, and neutralization degree were 20%, 0.04%, 0.6%, and 80%, respectively. The hybrid hydrogel was synthesized by mixing hydrogel with activated powders. The results show the water absorbency of the hybrid hydrogel is 169g/g and the potassium ion release percentage is 8.0% of activated powder per gram.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 2141-2144
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.2141
• Online since: August 2013
• Authors: Hui You Shen, Li Ren Fan, Bao Ming Pan, Ji Qing Song
• Keywords: Calcination, Hybrid Hydrogel Material, Hydrogel Fertilizer, K-Extraction Rate, K-Feldspar

References

[1] Hanxian Gu, Ning Wang, Yongqiong Yang,et al. Chemical Progress, Vol.30(2011),pp.2450-2455. In Chinese.

[2] Manning D A C. Sustainable Agriculture, Vol.30(2010), pp.281-294.

[3] Hongge Liu, Huoyan Wang, Jiannin Zhou, et al. Soil, Vol.44(2012),pp.242-252. In Chinese.

[4] Shangyue Shen, Liren Fan, Kaisheng Xia, et al. Rock minerals, Vol.27(2007),pp.6-11.In Chinese.

[5] Haipeng Ji, Jinming Xu. The modern chemical industry.Vol.31(2011),pp.30-33. In Chinese.