Preparation of ultrahigh-surface-area sludge biopolymers-based carbon using alkali treatment for organic matters recovery coupled to catalytic pyrolysis
文献类型：期刊论文
| 作者 | Zhang, Yu ; Tang, Jiayi; Zhang, Weijun; Ai, Jing; Liu, Yanyang; Wang, Qiandi; Wang, Dongsheng
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2021-08 |
| 卷号 | 106页码:83-96 |
| 关键词 | Waste activated sludge Biopolymers-based carbons Adsorption Tetracycline |
| ISSN号 | 1001-0742 |
| 英文摘要 | In this work, we employed waste activated sludge (WAS) as carbon source to prepare ultrahigh specific surface area (SSA) biopolymers-based carbons (BBCs) through alkali (KOH) treatment coupled to pyrolysis strategy. Before the pyrolysis process, the involvement of KOH made a great recovery of soluble biopolymers from WAS, resulting in highly-efficient catalytic pyrolysis. The Brunner-Emmett-Teller and pore volume of BBCs prepared at 800 degrees C (BBC 800) reached the maximum at 2633.89 m(2).g(-1) and 2.919 m(3).g(-1), respectively. X-ray photoelectron spectroscopy suggested that aromatic carbon in the form of C=C was the dominant fraction of C element in BBCs. The N element in BBCs were composed of pyrrolic nitrogen and pyridinic nitrogen at 700 degrees C, while a new graphitic nitrogen appeared over 800 degrees C. As a refractory pollutant of wastewater treatment plants, tetracycline (TC) was selected to evaluate adsorption performance of BBCs. The adsorption behavior of BBCs towards TC was conformed to the pseudo-second-order kinetic and the Langmuir models, signifying that chemisorption of monolayers was dominant in TC adsorption. The adsorption capacity of BBC 800 reached the maximum at 877.19 mg.g(-1) for 90 min at 298 K. Thermodynamic analysis indicated that the adsorption process was endothermic and spontaneous. Hydrogen bonding and pi-pi stacking interaction were mainly responsible for TC adsorption, and interfacial diffusion was the main rate-control step in adsorption process. The presence of sol uble microbial products (SMPs) enhanced TC removal. This work provided a novel strategy to prepare bio-carbon with ultrahigh SSA using WAS for highly-efficient removal of organic pollutants. (C) 2021 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/311016/45982]  |
| 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.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China 3.Hubei Prov Engn Res Ctr Systemat Water Pollut Con, Wuhan 430074, Peoples R China 4.China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yu,Tang, Jiayi,Zhang, Weijun,et al. Preparation of ultrahigh-surface-area sludge biopolymers-based carbon using alkali treatment for organic matters recovery coupled to catalytic pyrolysis[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,106:83-96. |
| APA | Zhang, Yu.,Tang, Jiayi.,Zhang, Weijun.,Ai, Jing.,Liu, Yanyang.,...&Wang, Dongsheng.(2021).Preparation of ultrahigh-surface-area sludge biopolymers-based carbon using alkali treatment for organic matters recovery coupled to catalytic pyrolysis.JOURNAL OF ENVIRONMENTAL SCIENCES,106,83-96. |
| MLA | Zhang, Yu,et al."Preparation of ultrahigh-surface-area sludge biopolymers-based carbon using alkali treatment for organic matters recovery coupled to catalytic pyrolysis".JOURNAL OF ENVIRONMENTAL SCIENCES 106(2021):83-96. |
入库方式： OAI收割
来源：生态环境研究中心
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