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| 零价纳米铁处理水中Cr(Ⅵ)的实验研究 | |
| 引用本文： | 冯婧微,梁成华,王黎.零价纳米铁处理水中Cr(Ⅵ)的实验研究[J].环境科学与技术,2011,34(10):164-167. |
| 作者姓名： | 冯婧微 梁成华 王黎 |
| 作者单位： | 1. 沈阳农业大学土地与环境学院,辽宁沈阳110161;沈阳化工大学环境与生物工程学院,辽宁沈阳110142 2. 沈阳农业大学土地与环境学院,辽宁沈阳,110161 3. 沈阳化工大学环境与生物工程学院,辽宁沈阳,110142 |
| 基金项目： | 国家科技重大专项(2008ZX07528-006-2) |
| 摘 要： | 采用NaBH4还原Fe3+制备纳米级零价铁(NZVI).运用X射线衍射(XRD)、扫描电镜(SEM)对样品进行表征.以Cr(Ⅵ)为研究对象,批实验考察了初始浓度、纳米铁投加量、温度对去除效果的影响,研究NZVI对Cr(Ⅵ)离子的吸附动力学.结果表明,NZVI加入量0.15 gL,水体中20 mg/L的Cr(Ⅵ)的去除率... |
| 关 键 词： | 零价纳米铁 Cr(Ⅵ) 吸附 动力学 |
Cr( Ⅵ ) Removal from Aqueous Solution with Nanoscale Zero-valent Iron |
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| FENG Jing-wei,LIANG Cheng-hua,WANG Li.Cr( Ⅵ ) Removal from Aqueous Solution with Nanoscale Zero-valent Iron[J].Environmental Science and Technology,2011,34(10):164-167. | |
| Authors: | FENG Jing-wei LIANG Cheng-hua WANG Li |
| Institution: | 1.School of Land and Environment,Shenyang Agricultural University,Shenyang 110161,China;2.School of Environmental and Biological Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China) |
| Abstract: | Nanoscale zero-valent iron(NZVI)was synthesized in aqueous solutions by reduction of Fe3+ with NaBH4.The samples were characterized with XRD and SEM.Adsorption of Cr(Ⅵ) ions on NZVI was investigated to understand the effect of dosages of NZVI,initial concentrations of C(rⅥ)ions and temperature on the adsorption kinetics.It was found that removal efficiency of C(rⅥ)containing 20.0 mg/L was higher than 99.5% with NZVI adsorbent 0.15 g/L and contact time 210 min.Kinetics of Cr(Ⅵ) removal was found to follow the pseudo-second-order rate equation,with the maximal adsorption capacity of 198.02 mg/g.The experimental data showed that the new type of adsorbent is very attractive for removal of C(rⅥ)from wastewater. |
| Keywords: | nanoscale zero-valent iron(NZVI) C(rⅥ) adsorption kinetics |
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