Comparison of cadmium and lead sorption by Phyllostachys pubescens biochar produced under a low-oxygen pyrolysis atmosphere
文献类型：期刊论文
| 作者 | Tang, Wenzhong; Zhang, Chao; Shan, Baoqing; Zhu, Yaoyao |
| 刊名 | BIORESOURCE TECHNOLOGY
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 238期号:0页码:352-360 |
| 关键词 | Biochar Phyllostachys Pubescens Precipitation Pyrolysis Atmosphere Heavy Metals |
| 英文摘要 | Phyllostachys pubescens (PP) biochars produced under a low oxygen pyrolysis atmosphere (oxygen content 1-4%) were prepared as sorbents for investigating the mechanisms of cadmium and lead sorption. A low-oxygen pyrolysis atmosphere increased biochar ash and specific surface area, promoting heavy metal precipitation and complexation. The maximum sorption capacity (Q(m)) of Pb2+ obtained from the Langmuir model was 67.4 mg.g (1), while Q(m) of Cd2+ was 14.7 mg.g (1). The contribution of each mechanism varied with increasing oxygen content at a low pyrolysis temperature. Mineral precipitation with Pb2+ was the predominant mechanism for Pb2+ removal and the contribution proportion significantly increased from 17.2% to 71.7% as pyrolysis oxygen atmosphere increased from 0% to 4%. The results showed that cadmium sorption primarily involved coordination with pi electrons, at 54.1-82.6% of the total adsorption capacity. The PP biochar shows potential for application in removing heavy metal contaminants, especially Pb2+. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39484]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Tang, Wenzhong,Zhang, Chao,Shan, Baoqing,et al. Comparison of cadmium and lead sorption by Phyllostachys pubescens biochar produced under a low-oxygen pyrolysis atmosphere[J]. BIORESOURCE TECHNOLOGY,2017,238(0):352-360. |
| APA | Tang, Wenzhong,Zhang, Chao,Shan, Baoqing,&Zhu, Yaoyao.(2017).Comparison of cadmium and lead sorption by Phyllostachys pubescens biochar produced under a low-oxygen pyrolysis atmosphere.BIORESOURCE TECHNOLOGY,238(0),352-360. |
| MLA | Tang, Wenzhong,et al."Comparison of cadmium and lead sorption by Phyllostachys pubescens biochar produced under a low-oxygen pyrolysis atmosphere".BIORESOURCE TECHNOLOGY 238.0(2017):352-360. |
入库方式： OAI收割
来源：生态环境研究中心
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