Environmentally persistent free radicals mediated removal of Cr(VI) from highly saline water by corn straw biochars
文献类型：期刊论文
| 作者 | Liu, Feng ; Zhao, Nan; Yin, Zheng; Zhang, Jing; Pan, Gang; Hao, Zhengping; Lv, Yizhong; Zhang, Meiyi
|
| 刊名 | BIORESOURCE TECHNOLOGY
 |
| 出版日期 | 2018-07-01 |
| 卷号 | 260页码:294-301 |
| 关键词 | Corn straw biochar Chromium Environmental persistent free radicals Selective adsorption Reduction |
| ISSN号 | 0960-8524 |
| 文献子类 | Article |
| 英文摘要 | Heavy metal ions coexisting with salts in the contaminant water are difficult to remove due to the interference of salts. Herein, biochars were pyrolyzed by corn straw at different temperatures, aiming to remove Cr(VI) in the presence of salts. Results show that biochars had surprisingly selective adsorption of Cr(VI). X-ray photoelectron and X-ray absorption near edge spectra revealed that Cr(VI) was reduced to Cr(III). All the adsorption was conducted at pH similar to 7, which differed from the previous studies that Cr(VI) could only be reduced at pH 2-4. Environmental persistent free radicals (EPFRs) on biochars were found to play the role in reducing Cr(VI) in neutral solutions, which was confirmed by electron spin resonance and free radical quenching. The biochar with EPFRs reveals a highly selective removal of Cr(VI), which has implications for the remediation of contaminated water. This work provides a new insight into biochar's properties and potential environmental applications. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41088]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Feng,Zhao, Nan,Yin, Zheng,et al. Environmentally persistent free radicals mediated removal of Cr(VI) from highly saline water by corn straw biochars[J]. BIORESOURCE TECHNOLOGY,2018,260:294-301. |
| APA | Liu, Feng.,Zhao, Nan.,Yin, Zheng.,Zhang, Jing.,Pan, Gang.,...&Zhang, Meiyi.(2018).Environmentally persistent free radicals mediated removal of Cr(VI) from highly saline water by corn straw biochars.BIORESOURCE TECHNOLOGY,260,294-301. |
| MLA | Liu, Feng,et al."Environmentally persistent free radicals mediated removal of Cr(VI) from highly saline water by corn straw biochars".BIORESOURCE TECHNOLOGY 260(2018):294-301. |
入库方式： OAI收割
来源：生态环境研究中心
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