| 热处理褐铁矿去除水中的Mn2+ |
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| 引用本文： | 张羽,刘海波,陈平,皮汇钰,陈天虎.热处理褐铁矿去除水中的Mn2+[J].岩石矿物学杂志,2018,37(4):687-696. |
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| 作者姓名： | 张羽 刘海波 陈平 皮汇钰 陈天虎 |
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| 作者单位： | 合肥工业大学资源与环境工程学院纳米矿物与环境材料实验室 |
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| 基金项目： | 国家自然科学基金资助项目（41572029，41402030） |
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| 摘 要： | 本文利用褐铁矿中针铁矿经热脱水相变获得以纳米晶赤铁矿为主要物相的纳米-微米多级孔结构材料,并用于模拟净化富Mn~(2+)地下水。同时考察了热处理温度、初始pH值、初始Mn~(2+)浓度、吸附反应时间等对材料去除溶液中Mn~(2+)的影响。XRD、TEM、BET表征结果表明,300℃热处理产物中赤铁矿孔径最小为2.7 nm,比表面积最大达到107.4 m~2/g。吸附实验结果表明,在pH值5~10的范围内,p H值对煅烧褐铁矿颗粒对Mn~(2+)去除效果影响较小;材料在贫氧条件下对水中低浓度Mn~(2+)的最大吸附量为6.45 mg/g;吸附动力学符合准二级动力学模型;褐铁矿热处理形成的纳米晶赤铁矿对Mn~(2+)具有吸附和催化氧化作用,其中的杂质锰氧化物对Mn~(2+)的吸附和催化氧化具有增强作用。
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| 关 键 词： | 褐铁矿 赤铁矿 纳米孔 除锰 催化氧化 |
| 收稿时间： | 2017/10/18 0:00:00 |
Removal of Mn2+ from aqueous solution based on thermally treated limonite |
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| ZHANG Yu,LIU Hai-bo,CHEN Ping,PI Hui-yu and CHEN Tian-hu.Removal of Mn2+ from aqueous solution based on thermally treated limonite[J].Acta Petrologica Et Mineralogica,2018,37(4):687-696. |
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| Authors: | ZHANG Yu LIU Hai-bo CHEN Ping PI Hui-yu and CHEN Tian-hu |
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| Institution: | Laboratory of Nano-mineral and Environmental Materials, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,Laboratory of Nano-mineral and Environmental Materials, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,Laboratory of Nano-mineral and Environmental Materials, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China,Laboratory of Nano-mineral and Environmental Materials, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China and Laboratory of Nano-mineral and Environmental Materials, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | |
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| Keywords: | limonite hematite nanopore removal of Mn2+ catalytic oxidation |
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