标题: A novel method for solidification/stabilization of Cd(II), Hg(II), Cu(II), and Zn(II) by activated electrolytic manganese slag

作者: Lan, JR (Lan, Jirong); Dong, YQ (Dong, Yiqie); Sun, Y (Sun, Yan); Fen, L (Fen, Lu); Zhou, M (Zhou, Min); Hou, HB (Hou, Haobo); Du, DY (Du, Dongyun)

来源出版物: JOURNAL OF HAZARDOUS MATERIALS卷: 409文献号: 124933 DOI: 10.1016/j.jhazmat.2020.124933出版年: MAY 5 2021

摘要: This study was aimed at removing and stabilizing heavy metals (Hg-II, Zn-II, Cu-II, and Cd-II). A novel material (named A-EMS) for heavy metal removal was proposed by ball grinding activated electrolytic manganese slag (EMS) with low content of sodium hydroxide. For different application scenarios, the two physical properties of the materials were developed: the powdery A-EMS (powder) was used to remove heavy metals from wastewater. In addition, the blocky A-EMS (porous brick) was used to build barrier walls for tailings ponds to prevent heavy metals from flowing out. The maximum removal amount of Hg(II) Cd(II), Zn(II), and Cu(II) by A-EMS were 475.35, 77.72, 259.70, and 203.20 mg/g in 30 min. The heavy metals ions were removed and fixed on A-EMS mainly through ion exchange and some forms of electrostatic adsorption and hydroxyl complexation. After consolidating the heavy metals, the compressive strength of the materials can reach 20 Mpa and the leaching toxicity met the national standard of China (GB/T 3838-2002) in 60 days. These excellent properties made AEMS widely used to remove heavy metals in wastewater and to intercept and solidify heavy metals in mine wastewater.

入藏号: WOS:000621665100002

PubMed ID: 33418297

语言: English

文献类型: Article

作者关键词: Electrolytic manganese slag (EMS); Heavy metals; Immobilization and stabilization; Barrier material; Atomic exchange defect

地址: [Lan, Jirong; Dong, Yiqie; Fen, Lu; Zhou, Min; Hou, Haobo] Wuhan Univ, Sch Resource & Environm Sci, Wuhan, Peoples R China.

[Lan, Jirong; Dong, Yiqie; Fen, Lu; Zhou, Min; Hou, Haobo] Hubei Environm Remediat Mat Engn Technol Res Ctr, Wuhan 430072, Peoples R China.

[Sun, Yan; Du, Dongyun] South Cent Univ Nationalities, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China.

通讯作者地址: Zhou, M; Hou, HB (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan, Peoples R China.

电子邮件地址: zhoumin@whu.edu.cn;houhb@whu.edu.cn

影响因子：9.038