%0 Journal Article %T Alkali Fusion Synthesis of Zeolitic Materials from Waste Dehydrated Cake Discharged from Recycling of Construction Waste Soil %A Takaaki Wajima %J Natural Resources %P 300-305 %@ 2158-7086 %D 2017 %I Scientific Research Publishing %R 10.4236/nr.2017.84018 %X An inorganic cation exchanger, zeolitic material, was synthesized from dehydrated cake, which was discharged from recycling of construction waste soil, using the alkali fusion method. The waste clay was mixed with NaOH powder (the weight ratio of NaOH/waste clay = 1.0) and then heated at 300буC for 1 h to make a fused material. This fused material was then added to distilled water, and then heated at 90буC, 120буC, 150буC and 180буC for 12 h in reaction bombs under autogenous pressure in order to synthesize the cation exchanger. As a result, waste cake can be converted into fused material with high solubility, and zeolitic materials can be synthesized from the fused material. A mixture of zeolite-X and hydroxysodalite was synthesized at 90буC and 120буC, hydroxysodalite alone was synthesized at 150буC and 180буC. By increasing the synthesis temperature, the cation exchange capacity (CEC) of the product decreased, and the highest CEC of the product at 90