Hazardous substance adsorbent containing aluminum silicate or aluminum hydrate, method for producing aluminum hydrate, aluminum silicate or aluminum hydrate, and method for removing harmful substances.

摘要

PROBLEM TO BE SOLVED: To provide an adsorbent having excellent adsorption performance of harmful substances such as fluorine and boron. An adsorbent containing aluminum silicate or aluminum hydrate, the aluminum hydrate may contain silicon, and the molar ratio of silicon to aluminum (Si / Al) is 0. 3 or less is preferable. Further, in the powder X-ray diffraction pattern, aluminum hydrate is 8.5 ° ± 0.5 °, 28 ° ± 0.5 °, 49 ° ± 0.5 ° and 65 ° ± 0. It has a peak at 5 °. [Selection diagram] None