Removal of total cyanide in coking wastewater during a coagulation process: Significance of organic polymers
文献类型：期刊论文
| 作者 | Shen, Jian1,3; Zhao, He1,2; Cao, Hongbin1; Zhang, Yi2; Chen, Yongsheng4 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 26期号:2页码:231-239 |
| 关键词 | cationic polymer total cyanide removal coking wastewater coagulation |
| ISSN号 | 1001-0742 |
| 其他题名 | J. Environ. Sci. |
| 中文摘要 | Whether a cationic organic polymer can remove more total cyanide (TCN) than a non-ionic organic polymer during the same flocculation system has not been reported previously. In this study, the effects of organic polymers with different charge density on the removal mechanisms of TCN in coking wastewater are investigated by polyferric sulfate (PFS) with a cationic organic polymer (PFS-C) or a non-ionic polymer (PFS-N). The coagulation experiments results show that residual concentrations of TCN (Fe(CN)(6)(3-)) after PFS-C flocculation (TCN < 0.2 mg/L) are much lower than that after PFS-N precipitation. This can be attributed to the different TCN removal mechanisms of the individual organic polymers. To investigate the roles of organic polymers, physical and structural characteristics of the flocs are analyzed by FT-IR, XPS, TEM and XRD. Owing to the presence of N+ in PFS-C, Fe(CN)(6)(3-) and negative flocs (Fe(CN)(6)(3-) adsorbed on ferric hydroxides) can be removed via charge neutralization and electrostatic patch flocculation by the cationic organic polymer. However, non-ionic N in PFS-N barely reacts with cyanides through sweeping or bridging, which indicates that the non-ionic polymer has little influence on TCN removal. |
| 英文摘要 | Whether a cationic organic polymer can remove more total cyanide (TCN) than a non-ionic organic polymer during the same flocculation system has not been reported previously. In this study, the effects of organic polymers with different charge density on the removal mechanisms of TCN in coking wastewater are investigated by polyferric sulfate (PFS) with a cationic organic polymer (PFS-C) or a non-ionic polymer (PFS-N). The coagulation experiments results show that residual concentrations of TCN (Fe(CN)(6)(3-)) after PFS-C flocculation (TCN < 0.2 mg/L) are much lower than that after PFS-N precipitation. This can be attributed to the different TCN removal mechanisms of the individual organic polymers. To investigate the roles of organic polymers, physical and structural characteristics of the flocs are analyzed by FT-IR, XPS, TEM and XRD. Owing to the presence of N+ in PFS-C, Fe(CN)(6)(3-) and negative flocs (Fe(CN)(6)(3-) adsorbed on ferric hydroxides) can be removed via charge neutralization and electrostatic patch flocculation by the cationic organic polymer. However, non-ionic N in PFS-N barely reacts with cyanides through sweeping or bridging, which indicates that the non-ionic polymer has little influence on TCN removal. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | DESTRUCTION ; DEGRADATION ; MECHANISMS ; MEMBRANE ; STRENGTH ; SULFATE ; SURFACE ; OZONE ; AIDS ; SOL |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000331781900001 |
| 公开日期 | 2014-05-06 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/8191]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Res Ctr Proc Pollut Control, 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.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA |
| 推荐引用方式 GB/T 7714 | Shen, Jian,Zhao, He,Cao, Hongbin,et al. Removal of total cyanide in coking wastewater during a coagulation process: Significance of organic polymers[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(2):231-239. |
| APA | Shen, Jian,Zhao, He,Cao, Hongbin,Zhang, Yi,&Chen, Yongsheng.(2014).Removal of total cyanide in coking wastewater during a coagulation process: Significance of organic polymers.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(2),231-239. |
| MLA | Shen, Jian,et al."Removal of total cyanide in coking wastewater during a coagulation process: Significance of organic polymers".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.2(2014):231-239. |
入库方式： OAI收割
来源：过程工程研究所
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