Activated carbon-enhanced ozonation of oxalate attributed to HO. oxidation in bulk solution and surface oxidation: Effects of the type and number of basic sites
文献类型：期刊论文
| 作者 | Xing, Linlin1,2,3; Xie, Yongbing1; Cao, Hongbin2; Minakata, Daisuke4; Zhang, Yi1,2; Crittenden, John C.5,6 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 245期号:1页码:71-79 |
| 关键词 | Activated carbon Oxalate ozonation Basic sites Surface oxidation Hydroxyl radical |
| ISSN号 | 1385-8947 |
| 其他题名 | Chem. Eng. J. |
| 中文摘要 | The objective of this work is to study the influence of the type and number of basic sites of activated carbon (AC) on the AC-enhanced ozonation of oxalate. A commercial activated carbon (AC) was thermally treated with N-2, H-2, and NH3 at different temperatures. The results of chemical and textural characterization of the original and modified ACs show that the specific surface area and number of basic sites generally increased with increasing treatment temperature, whereas the acidic oxygen-containing groups decreased. Nitrogen-containing groups formed after NH3 treatment. The oxalate removal rate increased in ozonation systems with modified ACs compared with that of systems with the original AC. Oxalate degradation increased when ACs with higher numbers of basic sites and larger specific surface areas were used, except for the AC treated under NH3 at 900 degrees C. Oxalate removal was attributed to surface oxidation and HO. oxidation in bulk solution. The former process was dominant in the ozonation system with 0.2 g/L AC at pH 7. The experimental results indicate pyrrole groups may enhance ozone decomposition to generate HO. in bulk solution, while pyridine groups possibly decreased the surface oxidation of oxalate. Other basic sites, such as basal planes and basic oxygen-containing groups, enhanced oxalate removal through surface oxidation, and indirectly weakened HO. oxidation of oxalate in bulk solution. (C) 2014 Elsevier B.V. All rights reserved. |
| 英文摘要 | The objective of this work is to study the influence of the type and number of basic sites of activated carbon (AC) on the AC-enhanced ozonation of oxalate. A commercial activated carbon (AC) was thermally treated with N-2, H-2, and NH3 at different temperatures. The results of chemical and textural characterization of the original and modified ACs show that the specific surface area and number of basic sites generally increased with increasing treatment temperature, whereas the acidic oxygen-containing groups decreased. Nitrogen-containing groups formed after NH3 treatment. The oxalate removal rate increased in ozonation systems with modified ACs compared with that of systems with the original AC. Oxalate degradation increased when ACs with higher numbers of basic sites and larger specific surface areas were used, except for the AC treated under NH3 at 900 degrees C. Oxalate removal was attributed to surface oxidation and HO. oxidation in bulk solution. The former process was dominant in the ozonation system with 0.2 g/L AC at pH 7. The experimental results indicate pyrrole groups may enhance ozone decomposition to generate HO. in bulk solution, while pyridine groups possibly decreased the surface oxidation of oxalate. Other basic sites, such as basal planes and basic oxygen-containing groups, enhanced oxalate removal through surface oxidation, and indirectly weakened HO. oxidation of oxalate in bulk solution. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Environmental ; Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CATALYTIC OZONATION ; OZONE DECOMPOSITION ; AQUEOUS-SOLUTION ; OXALIC-ACID ; OH-RADICALS ; WATER ; CHEMISTRY ; ADSORPTION ; KINETICS ; FIBERS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000335275200010 |
| 公开日期 | 2014-08-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/10997]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Michigan Technol Univ, Dept Civil & Environm Engn, Houghton, MI 49931 USA 5.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA 6.Georgia Inst Technol, Brook Byers Inst Sustainable Syst, Atlanta, GA 30332 USA |
| 推荐引用方式 GB/T 7714 | Xing, Linlin,Xie, Yongbing,Cao, Hongbin,et al. Activated carbon-enhanced ozonation of oxalate attributed to HO. oxidation in bulk solution and surface oxidation: Effects of the type and number of basic sites[J]. CHEMICAL ENGINEERING JOURNAL,2014,245(1):71-79. |
| APA | Xing, Linlin,Xie, Yongbing,Cao, Hongbin,Minakata, Daisuke,Zhang, Yi,&Crittenden, John C..(2014).Activated carbon-enhanced ozonation of oxalate attributed to HO. oxidation in bulk solution and surface oxidation: Effects of the type and number of basic sites.CHEMICAL ENGINEERING JOURNAL,245(1),71-79. |
| MLA | Xing, Linlin,et al."Activated carbon-enhanced ozonation of oxalate attributed to HO. oxidation in bulk solution and surface oxidation: Effects of the type and number of basic sites".CHEMICAL ENGINEERING JOURNAL 245.1(2014):71-79. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。