标题: Selective recovery of manganese from electrolytic manganese residue by using water as extractant under mechanochemical ball grinding: Mechanism and kinetics
作者: Lan, JR (Lan, Jirong); Dong, YQ (Dong, Yiqie); Xiang, YW (Xiang, Yuwei); Zhang, SS (Zhang, Shanshan); Mei, T (Mei, Tao); Hou, HB (Hou, Haobo)
来源出版物: JOURNAL OF HAZARDOUS MATERIALS 卷: 415 文献号: 125556 DOI: 10.1016/j.jhazmat.2021.125556 出版年: AUG 5 2021
摘要: This research aimed to address the issue of residual manganese in electrolytic manganese residue (EMR), which is difficult to recycle and can easily become an environmental hazard and resource waste. This research developed a method for the efficient and selective recovery of manganese from EMR and the removal of ammonia nitrogen (ammonium sulfate) under the combined action of ball milling and oxalic acid. The optimum process parameters of this method were obtained through single-factor experiment and response-surface model. Results showed that the recovery rate of manganese can exceed 98%, the leaching rate of iron was much lower than 2%, and the leaching rates of manganese and ammonia nitrogen after EMR ball grinding were 1.01 and 13.65 mg/L, respectively. Kinetics and mechanism studies revealed that ammonium salts were primarily removed in the form of ammonia, and that insoluble manganese (MnO2) was recovered by the reduction of FeS and FeS2 in EMR under the action of oxalic acid. Iron was solidified in the form of Fe2O3 and Fe2(SiO3)3. The technology proposed in this research has great industrial application value for the recycling and harmless treatment of EMR.
PubMed ID: 33752086
作者关键词: Electrolytic manganese residue (EMR); Ball grinding; Ammonium; Selective recovery; Manganese ion and iron ions
地址: [Lan, Jirong; Dong, Yiqie; Xiang, Yuwei; Zhang, Shanshan; Mei, Tao; Hou, Haobo] Wuhan Univ, Sch Resource & Environm Sci, Wuhan, Peoples R China.
[Lan, Jirong; Dong, Yiqie; Xiang, Yuwei; Zhang, Shanshan; Mei, Tao; Hou, Haobo] Hubei Environm Remediat Mat Engn Technol Res Ctr, Wuhan 430072, Peoples R China.
通讯作者地址: Hou, HB (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan, Peoples R China.
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