Disclosed is a boron adsorbent having an excellent adsorbing ability against boron contained in a solution, which is inexpensive and has haigh general versatility. Also disclosed is a boron removal method which can remove boron efficiently in a simple manner. An amide derivative represented by the general formula (1) is added to a boron-containing water under alkaline conditions to cause the adsorption of boron to the amide derivative. Then, a cation source having two or more valencies is added to the water to cause the aggregation of the amide body. The aggregated amide body is removed from the water. In the general formula (1), m represens 1 or 2; X represents -CH2OH, -CHO or -COOH; n represents an integer of 2 to 5; X are independent from each other and n are independent from each other when m represents 2; and Y represents a monovalent hydrocarbon group having 6 to 16 carbon atoms when m is 1, and represents a divalent hydrocarbon group having 8 to 18 carbon atoms when m is 2.
本发明公开了一种
硼吸附剂,它对溶液中所含的
硼具有出色的吸附能力,而且价格低廉,通用性强。还公开了一种除
硼方法,它能以简单的方式有效地去除
硼。在碱性条件下,将通式(1)表示的酰胺衍
生物加入含
硼水中,使
硼吸附在酰胺衍
生物上。然后,向
水中加入具有两种或两种以上价态的阳离子源,使酰胺体聚集。从
水中除去聚集的酰胺体。在通式(1)中,m 代表 1 或 2;X 代表 -CH2OH、-CHO 或 -COOH;n 代表 2 至 5 的整数;当 m 代表 2 时,X 相互独立,n 相互独立;当 m 代表 1 时,Y 代表具有 6 至 16 个碳原子的一价烃基,当 m 代表 2 时,Y 代表具有 8 至 18 个碳原子的二价烃基。