| HA对铁屑还原去除水中六价铬的影响 |
| |
| 引用本文： | CISSOKO Naman,周密,张珍,包乐乐,周娅,翁嫣爽,徐新华. HA对铁屑还原去除水中六价铬的影响[J]. 浙江大学学报(理学版), 2009, 36(4): 463-469. DOI: 10.3785/j.issn.1008-9497.2009.04.023 |
| |
| 作者姓名： | CISSOKO Naman 周密 张珍 包乐乐 周娅 翁嫣爽 徐新华 |
| |
| 作者单位： | 1. 浙江大学,环境工程系,浙江,杭州,310027
2. 浙江大学,环境工程系,浙江,杭州,310027;台州学院,生命科学学院,浙江,临海,317000 |
| |
| 基金项目： | 国家自然科学基金资助项目，教育部新世纪优秀人才支持计划(NCET-06-0525)资助. |
| |
| 摘 要： | 采用废铁屑（Fe°）为主要工具修复受污染水体中的六价铬，考察了腐殖酸（HA）对Fe°还原六价铬的影响，并初步探讨了HA存在时，Fe°还原降解水中Cr（VI）的动力学．实验结果表明，HA对铁屑还原去除Cr（VI）存在一定的影响，提高HA浓度会导致Cr（VI）去除效率下降，但是在一定浓度范围内较为接近，当HA浓度提高到80mg·L^-1时，抑制作用较为明显．HA存在时，Fe°还原去除Cr（VI）符合拟一级反应动力学，加入80mg·L^-1的HA，铁屑去除Cr（VI）的反应速率常数相应由不加HA时的0．00481min^-1降低为0．00199min；随着溶液初始pH值由3．0，4．0，6．0增加到10．0，反应速率常数相应由0．02657，0．0091，0．00222min。下降到0．0003min．
|
| 关 键 词： | 腐殖酸 Cr(VI) 铁屑 动力学 |
Reductive removal of Cr(VI) by iron filings in the presence of humic acid |
| |
| CISSOKO Naman,ZHOU Mi,ZHANG Zhen,BAO Le-le,ZHOU Ya,WENG Yan-shuang,XU Xin-hua. Reductive removal of Cr(VI) by iron filings in the presence of humic acid[J]. Journal of Zhejiang University(Sciences Edition), 2009, 36(4): 463-469. DOI: 10.3785/j.issn.1008-9497.2009.04.023 |
| |
| Authors: | CISSOKO Naman ZHOU Mi ZHANG Zhen BAO Le-le ZHOU Ya WENG Yan-shuang XU Xin-hua |
| |
| Affiliation: | 1. Department of Environmental Engineering;Zhejiang University;Hangzhou 310027;China;2. School of Bioscience;Taizhou University;Linhai 317000;Zhejiang Province;China |
| |
| Abstract: | The reduction of Chromium(VI) by iron filings in the presence of humic acid (HA) was carried out during our investigation. At the same time,the degradation kinetics of Chromium(VI) by iron filings was discussed in the presence of HA. Our experimental results indicated that HA has a definite control on the reduction of Cr(VI) by iron filings. At low range concentrations,HA has both inhibitory and promotion effects on the reaction. Effects were comparatively close to each other. Following the progressive incr... |
| |
| Keywords: | Cr(VI) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《浙江大学学报(理学版)》浏览原始摘要信息 |
|
点击此处可从《浙江大学学报(理学版)》下载免费的PDF全文 |
