SIMPLE TWO-STEP PROCESS FOR MAKING AGRICULTURAL CULTIVATION SOLUTION FROM SEAWATER USING CALCINED HYDROTALCITE AND NATURAL ZEOLITE

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概要

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• We attempted to make agricultural cultivation solution from seawater with a two-step process using calcined hydrotalcite and natural zeolite. Commercial calcined hydrotalcite was used in first step to reduce Cl^- content in seawater. Two types of Japanese natural zeolite, mordenite-type zeolite (Iizaka mine, Fukushima prefecture) and clinoptilolite-type zeolite (Koriyama mine, Kagoshima prefecture) were used in second step to reduce Na^+ concentration. Cl^- in seawater can be reduced by calcined hydrotalcite to obtain anion-reduced solution; Na^+ can be reduced by ion exchange with both types of natural zeolite. The obtained solution was neutral, and included the nutrients K^+, Mg^<2+>, and Ca^<2+>, and low levels of Na^+ and Cl^-. Higher concentrations of K^+, Mg^<2+> and Ca^<2+> in the solution can be obtained by mordenite-type Iizaka natural zeolite than those by clinoptilolite-type Koriyama natural zeolite. Radish sprouts did not grow in seawater and anion-reduced solution, but they grew in both solutions after zeolite treatment.

• 日本粘土学会の論文

著者

• WAJIMA Takaaki

  Department of Materials-Process Engineering & Applied Chemistry for Environments, Akita University

• IKEGAMI Yasuyuki

  Institute of Ocean Energy, Saga University

• Shimizu Tomoe

  Faculty Of Science And Engineering Saga University

• Wajima Takaaki

  Dep. Of Materials-process Engineering & Applied Chemistry For Environments Akita Univ.

• Wajima Takaaki

  Department Of Energy Science And Technology Graduate School Of Energy Science Kyoto University

• YAMATO TAKEHIKO

  Faculty of Science and Engineering, Saga University

• Ikegami Yasuyuki

  Institute Of Ocean Energy Saga University

• Yamato Takehiko

  Faculty Of Science And Engineering Saga University

• Ikegami Yasuyuki

  Inst. Of Ocean Energy Saga Univ.

• Wajima Takaaki

  Department of Applied Chemistry, Faculty of Engineering and Resource Science, Akita University

関連論文

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• SIMPLE TWO-STEP PROCESS FOR MAKING AGRICULTURAL CULTIVATION SOLUTION FROM SEAWATER USING CALCINED HYDROTALCITE AND NATURAL ZEOLITE
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• Fluid Conductivity of Porous Aluminum Fabricated by Powder-Metallurgical Spacer Method
• Characteristics of Pressure-increasing for Self-sustained Oscillation in Grooved Channels
• Synthesis of Zeolitic Material from Paper Sludge Ash Using Diatomite
• Flow Characteristics in the Grooved Channel for Pulsatile Flow
• Ion Exchange Properties of Japanese Natural Zeolites in Seawater

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