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| ZOCCHE,JAIRO J.; ROHR,PAULA; DAMIANI,ADRIANI P.; LEFFA,DANIELA D.; MARTINS,MIRIAM C.; ZOCCHE,CAROLINE M.; TEIXEIRA,KARINA O.; BORGES,GABRIELA D.; JESUS,MAIELLEN M. DE; SANTOS,CARLA E.I. DOS; DIAS,JOHNNY F.; ANDRADE,VANESSA M. DE. |
| ABSTRACT We assessed elemental composition of the liver in mice subjected to one-time or chronic consumption of the juice of vegetables cultivated in a vegetable garden built over deposits of coal waste. Lactuca sativa L. (lettuce), Beta vulgaris L. (beet), Brassica oleracea L. var. italica (broccoli) and Brassica oleracea L. var. acephala (kale) were collected from the coal-mining area and from a certified organic farm (control). Elemental composition was analyzed by particle-induced X-ray emission (PIXE) method. Concentrations of Mg, S, and Ca of mice subjected to one-time consumption of broccoli and concentrations of these same elements plus Si of mice receiving kale were higher in the coal-mining area. Concentrations of P, K, and Cu were increase after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coal; Anthropogenic soil; Trace elements; Heavy metals; Plants; PIXE. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502383 |
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| CAMPANER,VERIDIANA P.; LUIZ-SILVA,WANILSON; MACHADO,WILSON. |
| Acid drainage influence on the water and sediment quality was investigated in a coal mining area (southern Brazil). Mine drainage showed pH between 3.2 and 4.6 and elevated concentrations of sulfate, As and metals, of which, Fe, Mn and Zn exceeded the limits for the emission of effluents stated in the Brazilian legislation. Arsenic also exceeded the limit, but only slightly. Groundwater monitoring wells from active mines and tailings piles showed pH interval and chemical concentrations similar to those of mine drainage. However, the river and ground water samples of municipal public water supplies revealed a pH range from 7.2 to 7.5 and low chemical concentrations, although Cd concentration slightly exceeded the limit adopted by Brazilian legislation for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acid mine drainage; Coal; Metals; Water quality. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200539 |
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| Qi, Hua-wen; Rouxel, Olivier; Hu, Rui-zhong; Bi, Xian-wu; Wen, Han-jie. |
| Organic matter plays an important role in the transport and precipitation of germanium (Ge) in coal-hosted Ge deposits. In this paper. Ge isotopes of coal samples and their combustion products were analyzed in order to investigate the potential use of Ge isotopes as tracers of Ge sources and enrichment mechanisms in coal. Germanium isotopic composition of various samples (mainly Ge-rich lignite) from the Lincang Ge deposit, Yunnan, Southwest China was analyzed using a continuous flow hydride generation system coupled to a Multi Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS) and the standard-sample bracketing approach. Variations of (74)Ge/(70)Ge ratios are expressed as delta(74)Ge values relative to NIST SRM 3120a Ge standard solution.... |
| Tipo: Text |
Palavras-chave: Germanium; Coal; Stable isotope fractionation; Water-rock interaction; Geochemical tracer. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00041/15249/12676.pdf |
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| Coon, Randal C.; Leistritz, F. Larry. |
| A survey of firms involved in lignite mining and/or conversion resulted in estimates of their expenditures to in-state entities. An input-output model was applied to estimate secondary and total impacts of the direct expenditures. Direct expenditures totaled $806.8 million for 2007 and were estimated at $995.4 million for 2008. The total (direct plus secondary) contribution to the North Dakota economy was estimated to be $2.4 billion for 2007 and $2.8 billion for 2008. State tax revenues resulting from industry activities totaled $89 million in 2007, and industry direct employment totaled 3,882. In addition, economic activity resulting from the industry was estimated to support more than 21,000 jobs in other sectors of the state economy. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Lignite; Coal; Economic impact; Community/Rural/Urban Development; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/6137 |
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| Palmer, Karen L.; Burtraw, Dallas. |
| In the mid-1990s, when the Federal Energy Regulatory Commission was preparing to release Order 888 requiring open access to the transmission grid, the commission, environmental groups, and the Environmental Protection Agency, among others, raised the question of how open access and greater competition in wholesale electricity markets might affect the environment. If open access worked as expected, underutilized older coal-fired generators in the Midwest and elsewhere might find new markets for their power, leading to associated increases in air pollution emissions. Restructuring also might lead to retirements of inefficient nuclear facilities, whose generation would be replaced by fossil generation, further increasing emissions. On the other hand, some... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Electricity; Electric utilities; Regulation; Competition; Environment; Air pollution; Natural gas; Coal; Nuclear; Renewables; Customer choice; Resource /Energy Economics and Policy; L51; L94; L98. |
| Ano: 2005 |
URL: http://purl.umn.edu/10656 |
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| Seshadri,B; Bolan,N.S; Naidu,R; Brodie,K. |
| Coal provides the primary source of energy for many countries including Asia, South America, North America and Europe, and large quantities of waste products are produced during the combustion of coal in coal-fired power stations. This review paper gives an overview of the various types of coal combustion products (CCPs) and their utilization in various sectors, with a particular emphasis on the role of CCPs in managing the bioavailability of nutrients and heavy metals in relation to enhancing soil chemical fertility and mitigating metal contaminated soils. Currently, CCPs are used extensively in agricultural and construction industries. In agricultural industries, they are used primarily as an amendment to improve the physical and chemical properties of... |
| Tipo: Journal article |
Palavras-chave: Coal; Heavy metals; Combustion products. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100011 |
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