Adsorption and coadsorption mechanisms of Cr(VI) and organic contaminants on H3PO4 treated biochar
文献类型：期刊论文
| 作者 | Zhao, Nan; Zhao, Chuanfang; Lv, Yizhong; Zhang, Weifang; Du, Yuguo; Hao, Zhengping; Zhang, Jing |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2017-01-11 |
| 卷号 | 186期号:0页码:422-429 |
| 关键词 | H3po4-treated Biochar Cr(Vi) Naphthalene Bisphenol a Adsorption Coadsorption Mechanism |
| 英文摘要 | The study of simultaneous removal of heavy metals and organic contaminants has practical applications due to the coexistence of complex pollutants in the wastewater or soil. In this work, biochar was prepared to study the removal efficiencies of Cr(VI), naphthalene (NAP) and bisphenol A (BPA) in the single or mixed systems. H3PO4-treated biochar presented a much higher adsorption capacity of the pollutants than the untreated biochar and also showed a high resistance to coexisting salts. The maximum adsorption capacities for Cr(VI) and BPA were 116.28 mg g(-1), and 476.19 mg g(-1), respectively. Coadsorption experiments revealed that the presence of organic pollutants caused a limited decrease (similar to 10%) of removal efficiency of Cr(VI) and no further decrease was observed with higher concentrations of organic pollutants, while the presence of Cr(VI) had little impact on the removal of NAP. Infrared spectra and molecular simulation demonstrated that Cr(VI) was mainly adsorbed on the biochar via chemical complexation, while the organic pollutants through pi-pi interaction. Unexpectedly, the addition of Cr(VI) increased the removal efficiency of BPA, probably due to the increased H-bond interactions between BPA and the biochar through bridge bonds of oxygenic groups from CrO42-. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39240]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Nan,Zhao, Chuanfang,Lv, Yizhong,et al. Adsorption and coadsorption mechanisms of Cr(VI) and organic contaminants on H3PO4 treated biochar[J]. CHEMOSPHERE,2017,186(0):422-429. |
| APA | Zhao, Nan.,Zhao, Chuanfang.,Lv, Yizhong.,Zhang, Weifang.,Du, Yuguo.,...&Zhang, Jing.(2017).Adsorption and coadsorption mechanisms of Cr(VI) and organic contaminants on H3PO4 treated biochar.CHEMOSPHERE,186(0),422-429. |
| MLA | Zhao, Nan,et al."Adsorption and coadsorption mechanisms of Cr(VI) and organic contaminants on H3PO4 treated biochar".CHEMOSPHERE 186.0(2017):422-429. |
入库方式： OAI收割
来源：生态环境研究中心
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