Effects of chemical modification on physicochemical properties and adsorption behavior of sludge-based activated carbon
文献类型：期刊论文
| 作者 | Wu, Chunxu; Li, Lanfeng; Zhou, Hao; Ai, Jing; Zhang, Hongtao; Tao, Jialin; Wang, Dongsheng; Zhang, Weijun |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2021-02 |
| 卷号 | 100页码:340-352 |
| ISSN号 | 1001-0742 |
| 关键词 | Sludge-based activated carbon Chemical modification Adsorption Dissolved organic matter |
| 英文摘要 | This study aimed to explore the adsorption performance of sludge-based activated carbon (SBC) towards dissolved organic matters (DOMs) removal from sewage, and investigated the modification effect of different types of chemicals on the structure of synthesized SBC. Waste activated sludge (WAS) was used as a carbon source, and HCl, HNO3, and NaOH were used as different types of chemicals to modify the SBC. With the aid of chemical activation, the modified SBC showed higher adsorption performances on DOMs removal with maximum adsorption of 29.05 mg/g and second-order constant (k) of 0.1367 (L/mol/sec) due to the surface elution of ash and minerals by chemicals. The surface elemental composition of MSBC suggested that the content of C-C and C-O functional groups on the surface of modified sludge-based activated carbon (MSBC) played an important role on the adsorption capacities of MSBC towards DOMs removal in sewage. Additionally, the residual molecular weight of DOMs in sewage was investigated using a 3-dimension fluorescence excitation emission matrix (3D-EEM) and high-performance size exclusion chromatography (HP-SEC). Results showed that the chemical modification significantly improved the adsorption capacity of MSBC on humic acids (HA) and aromatic proteins (APN), and both of NaOH-MSBC and HC1-MSBC were effective for a wide range of different AMW DOMs removal from sewage, while the HNO3-MSBC exhibited poorly on AMW organics of 2,617 Da and 409 Da due to the reducing content of macropore. In brief, this study provides reference values for the impact of the chemicals of the activation stage before the SBCs application. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45932]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China 2.Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Chunxu,Li, Lanfeng,Zhou, Hao,et al. Effects of chemical modification on physicochemical properties and adsorption behavior of sludge-based activated carbon[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,100:340-352. |
| APA | Wu, Chunxu.,Li, Lanfeng.,Zhou, Hao.,Ai, Jing.,Zhang, Hongtao.,...&Zhang, Weijun.(2021).Effects of chemical modification on physicochemical properties and adsorption behavior of sludge-based activated carbon.JOURNAL OF ENVIRONMENTAL SCIENCES,100,340-352. |
| MLA | Wu, Chunxu,et al."Effects of chemical modification on physicochemical properties and adsorption behavior of sludge-based activated carbon".JOURNAL OF ENVIRONMENTAL SCIENCES 100(2021):340-352. |
入库方式： OAI收割
来源：生态环境研究中心
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