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题名: Comparison of alternative remediation technologies for recycled gravel contaminated with heavy metals
作者: Gao, Xiaofeng1; Gu, Yilu2; Huang, Sheng1; Zhen, Guangyin3; Deng, Guannan1; Xie, Tian1; Zhao, Youcai1
关键词: Contaminated recycled gravel ; construction and demolition wastes ; heavy metals ; mobilization ; immobilization ; glyphosate
刊名: WASTE MANAGEMENT & RESEARCH
发表日期: 2015-11-01
DOI: 10.1177/0734242X15602963
卷: 33, 期:11, 页:1005-1014
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]: Engineering, Environmental ; Environmental Sciences
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology
英文摘要: To evaluate the effects of different remediation methods on heavy metals contaminated recycled gravel, three immobilization agents (monopotassium phosphate, lime, nano-iron) and two mobilization agents (glyphosate, humic acid (HA)) were studied and compared. Results indicated that nano-iron powder was found to be more effective to immobilize Zn, Cu, Pb and Cd. Meanwhile, glyphosate presents a higher mobilization effect than HA with removal rates of about 66.7% for Cd, more than 80% for Cr, Cu and Zn, and the highest removal percentage of 85.9% for Cr. After the mobilization by glyphosate, the leaching rates of Zn, Cu and Cr were about 0.8%, and below 0.2% for Pb and Cd. The leaching rates after nano-iron powder treatment were 1.18% for Zn, 0.96% for Cr, 0.61% for Cu, 0.45% for Pb and Cd not detected. The formation and disappearance of metal (Zn/Cu/Cr/Pb/Cd) compounds were firmly confirmed through X-ray diffraction and scanning electron microscopy analyses on crystalline phases and morphological surface structures.
关键词[WOS]: UNPAVED RURAL ROADS ; ZERO-VALENT IRON ; HUMIC-ACID ; AQUEOUS-SOLUTION ; DEMOLITION WASTE ; COPPER-ION ; 2 SOILS ; GLYPHOSATE ; ADSORPTION ; COMPLEXES
语种: 英语
项目资助者: Public Interest Program of the Chinese Ministry of Environmental Protection(201309025) ; National Natural Science Foundation of China(51278350)
WOS记录号: WOS:000364381300007
ISSN号: 0734-242X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27352
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Beijing 100864, Peoples R China
3.Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan
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