浮选药剂油酸对施氏矿物转化及重金属Cr迁移的影响

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Abstract Schwertmannite (Sch) was first synthesized via a rapid chemical method, and the effects of oleic acid concentration and pH on the transformation of Sch minerals and migration of Cr were investigated systematically. The results indicate that the transformation of Sch was greatly influenced by oleic acid via the inhibition of dissolution-transformation processes, and Sch remained at the primary stage after the transformation of 150days. Meanwhile, the stability of Sch was strengthened by the doping of Cr. Moreover, the Sch transformation rate increased with pH. In addition, the migration of Cr in Sch was heavily influenced by the dissolution-transformation processes. The release of Cr into the aquatic environment from Sch mineral occurred at low pH, whereas the migration of Cr into goethite took place in high pH environments.

Key words： schwertmannite oleic acid goethite transformation Cr(VI)

Received: 08 June 2023

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X54

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	YU Sheng-hui
	FENG Xin-yi
	WANG Yi-yuan
	ZHANG Lei
	GUO Jun-kang

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YU Sheng-hui,FENG Xin-yi,WANG Yi-yuan等. Effects of oleic acid on the transformation of schwertmannite and Cr migration[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(2): 768-780.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I2/768

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