Thermal Characteristics of Hyperaccumulator and Fate of Heavy Metals during Thermal Treatment of Sedum plumbizincicola
文献类型：期刊论文
| 作者 | Zhong, Daoxu1; Zhong, Zhaoping1; Wu, Longhua2; Xue, Hui1; Song, Zuwei1; Luo, Yongming3
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| 刊名 | INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
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| 出版日期 | 2015 |
| 卷号 | 17期号:8页码:766-776 |
| 关键词 | hyperaccumulators heavy metals thermal disposal thermodynamic analysis |
| ISSN号 | 1522-6514 |
| 产权排序 | [Zhong, Daoxu; Zhong, Zhaoping; Xue, Hui; Song, Zuwei] Southeast Univ, Sch Energy & Environm, Minist Educ, Key Lab Energy Thermal Convers & Control, Nanjing, Jiangsu, Peoples R China; [Wu, Longhua] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing, Jiangsu, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai, Peoples R China |
| 通讯作者 | Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing, Jiangsu, Peoples R China. lhwu@issas.ac.cn |
| 中文摘要 | Thermal treatment is one of the most promising disposal techniques for heavy metal- (HM)-enriched hyperaccumulators. However, the thermal characteristics and fate of HMs during thermal treatment of hyperaccumulator biomass need to be known in detail. A horizontal tube furnace was used to analyze the disposal process of hyperaccumulator biomass derived from a phyto-extracted field in which the soil was moderately contaminated with heavy metals. Different operational conditions regarding temperature and gas composition were tested. A thermo-dynamic analysis by advanced system for process engineering was performed to predict HM speciation during thermal disposal and SEM-EDS, XRD and sequential chemical extraction were used to characterize the heavy metals. The recovery of Zn, Pb and Cd in bottom ash decreased with increasing temperature but recovery increased in the fly ash. Recovery of Zn, Pb and Cd fluctuated with increasing air flow rate and the metal recovery rates were higher in the fly ash than the bottom ash. Most Cl, S, Fe, Al and SiO2 were found as alkali oxides, SO2, Fe-2(SO4)(3), iron oxide, Ca3Al2O6, K2SiO3 and SiO2 instead of reacting with HMs. Thus, the HMs were found to occur as the pure metals and their oxides during the combustion process and as the sulfides during the reducing process. |
| 英文摘要 | Thermal treatment is one of the most promising disposal techniques for heavy metal- (HM)-enriched hyperaccumulators. However, the thermal characteristics and fate of HMs during thermal treatment of hyperaccumulator biomass need to be known in detail. A horizontal tube furnace was used to analyze the disposal process of hyperaccumulator biomass derived from a phyto-extracted field in which the soil was moderately contaminated with heavy metals. Different operational conditions regarding temperature and gas composition were tested. A thermo-dynamic analysis by advanced system for process engineering was performed to predict HM speciation during thermal disposal and SEM-EDS, XRD and sequential chemical extraction were used to characterize the heavy metals. The recovery of Zn, Pb and Cd in bottom ash decreased with increasing temperature but recovery increased in the fly ash. Recovery of Zn, Pb and Cd fluctuated with increasing air flow rate and the metal recovery rates were higher in the fly ash than the bottom ash. Most Cl, S, Fe, Al and SiO2 were found as alkali oxides, SO2, Fe-2(SO4)(3), iron oxide, Ca3Al2O6, K2SiO3 and SiO2 instead of reacting with HMs. Thus, the HMs were found to occur as the pure metals and their oxides during the combustion process and as the sulfides during the reducing process. |
| 学科主题 | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | SOLID-WASTE INCINERATORS ; PHYTOEXTRACTION ; COMBUSTION ; CHLORIDES ; BEHAVIOR ; VOLATILIZATION ; EMISSION ; COAL ; ASH ; ZN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355480700006 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/8614]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.Southeast Univ, Sch Energy & Environm, Minist Educ, Key Lab Energy Thermal Convers & Control, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing, Jiangsu, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Daoxu,Zhong, Zhaoping,Wu, Longhua,et al. Thermal Characteristics of Hyperaccumulator and Fate of Heavy Metals during Thermal Treatment of Sedum plumbizincicola[J]. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION,2015,17(8):766-776. |
| APA | Zhong, Daoxu,Zhong, Zhaoping,Wu, Longhua,Xue, Hui,Song, Zuwei,&Luo, Yongming.(2015).Thermal Characteristics of Hyperaccumulator and Fate of Heavy Metals during Thermal Treatment of Sedum plumbizincicola.INTERNATIONAL JOURNAL OF PHYTOREMEDIATION,17(8),766-776. |
| MLA | Zhong, Daoxu,et al."Thermal Characteristics of Hyperaccumulator and Fate of Heavy Metals during Thermal Treatment of Sedum plumbizincicola".INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 17.8(2015):766-776. |
入库方式： OAI收割
来源：烟台海岸带研究所
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