| abstract |
Provided are a boron adsorbent that is excellent in adsorption capacity for boron in a solution, is inexpensive, and has high versatility, and a boron removal method that can easily and efficiently remove boron. Under alkaline conditions, an amide derivative represented by the general formula (1) is added to boron-containing water to adsorb boron, and then a cation source having two or more valences is added to agglomerate and separate the amide from water. To do. (In the formula, m represents 1 or 2. X represents a —CH 2 OH group, —CHO group or —COOH group, n represents an integer of 2 to 5. When m is 2, X and n are each Independently, Y represents a monovalent hydrocarbon group having 6 to 16 carbon atoms when m is 1, and a divalent hydrocarbon group having 8 to 18 carbon atoms when m is 2.) |