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Desalination Behavior of Calcined Hydrotalcite From Seawater for Preparation of Agricultural Cultivation Solution Using Natural Zeolite

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  • Takaaki Wajima

Abstract

The desalination behavior of calcined hydrotalcite (CHT) from seawater used to treat seawater that was subsequently subjected to zeolite treatment prior to application of irrigation water was investigated. The results revealed that CHT removed Cl–, SO42–, Mg2+ and Ca2+ from seawater, but that Na+ and K+ were almost unchanged, and that CHT treatment made the pH of the solution alkaline. As the solution temperature increased, the solution pH increased, the rate of Mg2+, Ca2+, Cl– and SO42– removal improved, and greater Cl– removal was observed. Following CHT treatment, the obtained solution (CHT-solution) had a high Na+ content and high pH (approximately 12), while treatment of CHT-solution with natural zeolite neutralized the pH of the CHT-solution and reduced the Na+ content. Although germination of radish sprouts did not observed using seawater and CHT-solution, the growth of radish sprouts could be observed using the final solution after natural zeolite treatment of CHT-solution.

Suggested Citation

  • Takaaki Wajima, 2014. "Desalination Behavior of Calcined Hydrotalcite From Seawater for Preparation of Agricultural Cultivation Solution Using Natural Zeolite," Energy and Environment Research, Canadian Center of Science and Education, vol. 4(2), pages 1-3, June.
    • Handle: RePEc:ibn:eerjnl:v:4:y:2014:i:2:p:3
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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