| Literature DB >> 27469041 |
Huijie Su1, Zhanqiang Fang2, Pokeung Eric Tsang3, Liuchun Zheng1, Wen Cheng1, Jianzhang Fang1, Dongye Zhao4.
Abstract
In this study, a kind of high-efficiency and low-cost biochar-supported zero-valent iron nanoparticles (nZVI@BC) was synthesised and used in the remediation of Cr(VI)-contaminated soil. The remediation tests indicated that the immobilisation efficiency of Cr(VI) and Crtotal was 100% and 91.94%, respectively, by 8g nZVI@BC per kg soil for 15 d of remediation. Further investigations showed that exchangeable Cr was almost completely converted to Fe-Mn oxides and organic matter. Moreover, nZVI@BC could effectively improve soil fertility and reduce the leachability of Fe caused by nZVI. At the same time, the cabbage mustard growth experiments indicated that the phytotoxicity of Cr(VI) and Fe in the seedlings was effectively decreased by nZVI@BC treatment, and that the cabbage mustard growth was enhanced.Entities:
Keywords: Biochar (BC); Cr(VI)-contaminated soil; Phytotoxicity; Soil fertility; Zero-valent iron nanoparticles (nZVI)
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Year: 2016 PMID： 27469041 DOI： 10.1016/j.jhazmat.2016.07.039
Source DB: PubMed Journal: J Hazard Mater ISSN： 0304-3894 Impact factor: 10.588