Hydrothermal synthesis of mesoporous tobermorite from fly ash with enhanced removal performance towards Pb2+ from wastewater
文献类型：期刊论文
| 作者 | Wang, Zehua1,2; Xu, Linhao2; Wu, Daishe2; Zheng, Shili1 |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2022-01-02 |
| 卷号 | 632页码:10 |
| ISSN号 | 0927-7757 |
| 关键词 | Fly ash Tobermorite Adsorption Heavy metal Pb2+ |
| DOI | 10.1016/j.colsurfa.2021.127775 |
| 英文摘要 | The mesoporous tobermorite with high removal efficiency of Pb2+ was hydrothermally synthesized from fly ash (FA). The physicochemical characteristics of the synthesized tobermorite were measured by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller specific surface area analyzer, and Fourier transform infrared spectroscopy (FTIR). It was found that the specific surface area and pore volume of the mesoporous tobermorite were 29.98 m2/g and 0.1325 cm3/g, respectively, which were much higher than those of FA. The tobermorite showed high removal efficiency for Pb2+ of 99.93%, and the adsorption kinetic data for Pb2+ adsorption on tobermorite were better fitted with the pseudo-second-order model. Besides, the Langmuir isotherm model provided better description of the Pb2+ adsorption isotherm, and the maximum adsorption capacity for Pb2+ adsorption on tobermorite was 266.67 mg/g, which was much higher than that on FA (86.13 mg/ g). What's more, the adsorption mechanisms of the tobermorite towards Pb2+ were analyzed by XRD, SEMenergy dispersive spectroscopy, and FTIR. It was found that the high adsorption capacity of the tobermorite towards Pb2+ was ascribed to its mesoporous structure, a mass of -OH, the ion-exchange of Ca2+ with Pb2+, and the precipitation of 2PbCO3.Pb(OH)2. This work presents the tobermorite synthesized from FA as an effective and low-cost adsorbent towards Pb2+, and provides a potential application method of FA in treatment of industrial wastewater containing Pb2+. |
| WOS关键词 | HEAVY-METAL IONS ; AQUEOUS-SOLUTION ; HUMIC-ACID ; ADSORPTION ; CD(II) ; MODELS ; PB(II) ; FTIR |
| 资助项目 | National Natural Science Foundation of China[52004128] ; National Natural Science Foundation of China[51774261] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000718807200008 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/51019]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wu, Daishe; Zheng, Shili |
| 作者单位 | 1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Nanchang Univ, Sch Resources Environm & Chem Engn, Key Lab Poyang Lake Environm & Resource Utilizat, Minist Educ, Nanchang 330031, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zehua,Xu, Linhao,Wu, Daishe,et al. Hydrothermal synthesis of mesoporous tobermorite from fly ash with enhanced removal performance towards Pb2+ from wastewater[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2022,632:10. |
| APA | Wang, Zehua,Xu, Linhao,Wu, Daishe,&Zheng, Shili.(2022).Hydrothermal synthesis of mesoporous tobermorite from fly ash with enhanced removal performance towards Pb2+ from wastewater.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,632,10. |
| MLA | Wang, Zehua,et al."Hydrothermal synthesis of mesoporous tobermorite from fly ash with enhanced removal performance towards Pb2+ from wastewater".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 632(2022):10. |
入库方式： OAI收割
来源：过程工程研究所
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