Iron speciation and mineral characterization of contaminated sediments by coal mining drainage in Neath Canal, South Wales, United Kingdom
文献类型：期刊论文
| 作者 | Zheng, Guodong1,2,3; Kuno, Akihito4; Mahdi, Talib A.2; Evans, David J.5; Miyahara, Masaaki3,6; Takahashi, Yoshio3; Matsuo, Motoyuki4; Shimizu, Hiroshi3 |
| 刊名 | GEOCHEMICAL JOURNAL
 |
| 出版日期 | 2007 |
| 卷号 | 41期号:6页码:463-474 |
| 关键词 | iron oxide carbonation arsenic coal mining drainage Neath canal sediments |
| ISSN号 | 0016-7002 |
| 文献子类 | Article |
| 英文摘要 | In the early 1990's, the Neath Canal in South Wales, UK, received large amounts of drainage waters from nearby coal mines, which contributed to its contamination by heavy metals and arsenic. One sediment core and surface sediments were collected from the upstream section of the Neath Canal and characterized for their mineral composition and iron speciation using powder X-ray diffraction (XRD) and Mossbauer spectroscopy. The sediments show three distinctive layers that are defined by their physical properties including color, sediment components and dryness. The upper layer of the sediment (0-22 cm) is a reddish-brown wet precipitate dominated by iron oxides and hydroxides and a high content of arsenic. The middle layer (22-27 cm) is a soft wet deposit of yellow color which mainly contains calcite with sheet silicates (kaolinite) and goethite. Magnesium, calcium and manganese are enriched in this layer whereas iron is depleted compared to the upper layer. The lower part of the core (below 27 cm) is colored gray to dark gray and contains quartz, pyrite and clay minerals, similar to normal aquatic sediments. In addition, this layer also contains abundant coal particles. Silicon, aluminium, titanium, potassium, phosphorus and sodium concentrations are higher whereas iron, manganese, calcium and magnesium are lower in the lower portion of the core compared to the middle and upper layers. Mineral composition, major elements, and iron speciation indicate oxic conditions in the upper and middle layers whereas reducing conditions prevail in the lower layer, which likely control the distribution of hazardous elements. Given the variation of physico-chemical characteristics of the sediments with depth in the canal, different remediation treatments will likely be necessary for each layer of sediments. |
| WOS关键词 | AQUEOUS WASTE STREAMS ; MARINE-SEDIMENTS ; HEAVY-METALS ; MOSSBAUER-SPECTROSCOPY ; BITUMINOUS COALS ; PYRITE FORMATION ; TRACE-ELEMENTS ; CEMENT ; IMMOBILIZATION ; CARBONATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000252342000006 |
| 出版者 | GEOCHEMICAL SOC JAPAN |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67540]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zheng, Guodong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Gas Geochem, Lanzhou 730000, Peoples R China 2.Cardiff Univ, Sch Engn, GRC, Cardiff CF24 3AA, Wales 3.Hiroshima Univ, Dept Earth & Planetary Syst Sci, Higashihiroshima 7398526, Japan 4.Univ Tokyo, Grad Sch Arts & Sci, Tokyo 1538902, Japan 5.John Innes Ctr Plant Sci Res, Dept Biol Chem, Norwich NR4 7UH, Norfolk, England 6.Tohoku Univ, Grad Sch Sci, Inst Mineral Petrol & Econ Geol, Sendai, Miyagi 9808578, Japan |
| 推荐引用方式 GB/T 7714 | Zheng, Guodong,Kuno, Akihito,Mahdi, Talib A.,et al. Iron speciation and mineral characterization of contaminated sediments by coal mining drainage in Neath Canal, South Wales, United Kingdom[J]. GEOCHEMICAL JOURNAL,2007,41(6):463-474. |
| APA | Zheng, Guodong.,Kuno, Akihito.,Mahdi, Talib A..,Evans, David J..,Miyahara, Masaaki.,...&Shimizu, Hiroshi.(2007).Iron speciation and mineral characterization of contaminated sediments by coal mining drainage in Neath Canal, South Wales, United Kingdom.GEOCHEMICAL JOURNAL,41(6),463-474. |
| MLA | Zheng, Guodong,et al."Iron speciation and mineral characterization of contaminated sediments by coal mining drainage in Neath Canal, South Wales, United Kingdom".GEOCHEMICAL JOURNAL 41.6(2007):463-474. |
入库方式： OAI收割
来源：地质与地球物理研究所
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