| Removal of mercury (II) and chromium (VI) from wastewater using a new and effective composite: Pumice-supported nanoscale zero-valent iron | |
| Tingyi Liu; Zhong-Liang Wang; Xiaoxing Yan; Bing Zhang | |
| 2014 | |
| Source Publication | Chemical Engineering Journal
 |
| Volume | 245Issue:1Pages:34-40 |
| Abstract | Nanoscale zero-valent iron successfully supported on pumice (P-NZVI) was used to remove heavy metals from wastewater with a higher removal capacity and efficiency. NZVI particles with a mean diameter of 30.6 nm are distributed uniformly on the surface of P-NZVI. The thermal stability and mechanical strength of P-NZVI were also obviously enhanced. P-NZVI with a 7.7% NZVI mass fraction had a specific surface area (S-BET) of 32.2 m(2)/g. The removal capacity of Hg (II) and Cr (VI) by P-NZVI was 332.4 mg Hg/g Fe and 306.6 mg Cr/g Fe, respectively. As an increase of pH, the removal rates of Hg (II) increased but those of Cr (VI) decreased gradually. P-NZVI is a regenerated material. The X-ray photoelectron spectroscope analysis (XPS) results indicated that Hg (If) and Cr (VI) were removed by a rapid physical adsorption in the first 0.5 min and predominantly by reduction. In terms of the efficiency and speed, P-NZVI was a promising candidate for applications to in situ environmental remediation, especially to the heavy metals pollution incidents with an extremely high concentration of heavy metals. |
| Keyword | Pumice Nanoscale Zero-valent Iron Chromium (Vi) Mercury (Ii) |
| Subject Area | 环境地球化学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/5210 |
| Collection | 环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文 |
| Recommended Citation GB/T 7714 | Tingyi Liu,Zhong-Liang Wang,Xiaoxing Yan,et al. Removal of mercury (II) and chromium (VI) from wastewater using a new and effective composite: Pumice-supported nanoscale zero-valent iron[J]. Chemical Engineering Journal,2014,245(1):34-40. |
| APA | Tingyi Liu,Zhong-Liang Wang,Xiaoxing Yan,&Bing Zhang.(2014).Removal of mercury (II) and chromium (VI) from wastewater using a new and effective composite: Pumice-supported nanoscale zero-valent iron.Chemical Engineering Journal,245(1),34-40. |
| MLA | Tingyi Liu,et al."Removal of mercury (II) and chromium (VI) from wastewater using a new and effective composite: Pumice-supported nanoscale zero-valent iron".Chemical Engineering Journal 245.1(2014):34-40. |
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