Molecular understanding of dissolved black carbon sorption in soil-water environment

2019 ◽  
Vol 154 ◽  
pp. 210-216 ◽  
Author(s):  
Lei Luo ◽  
Zien Chen ◽  
Jitao Lv ◽  
Yuan Cheng ◽  
Tong Wu ◽  
...  
Keyword(s):  
Soil Water ◽  
Black Carbon ◽  
Water Environment

scholarly journals Electrical resistivity methods for landfill monitoring

2018 ◽  
Vol 50 (2) ◽  
pp. 183-193
Author(s):  
Łukasz Zawadzki ◽  
Dorota Wychowaniak ◽  
Mariusz Lech
Keyword(s):  
Electrical Resistivity ◽  
Soil Water ◽  
Water Flux ◽  
Harmful Effect ◽  
Water Environment ◽  
Geophysical Methods ◽  
Soil Samples ◽  
Test Method ◽  
Column Test ◽  
Resistivity Measurements

Abstract Every single investment affects the natural environment, and that is why it is so important to eliminate nuisance it could cause. Extremely harmful effect on environment or human health could be expected from waste treatment facilities. One of the kinds of contamination which is a real threat to soil and water environment are leachates from landfills. They contain random chemical composition and can migrate from landfill through soil water flux leading to environmental pollution and degradation of groundwater. This paper focuses on the use of geophysical methods to assess migration of pollutants from the landfill through the subsoil. The laboratory tests of solute transport have been conducted on three soil samples from Łubna site to simulate the contamination flow. Migration of leachates through soil samples was controlled using the column test and electrical resistivity measurements which allow to com pare the results obtained with the standard column test method and electrical resistivity measurements. It leads to the conclusion that electrical resistivity methods for contamination transport monitoring in soil–water systems are suitable. Furthermore, field electrical resistivity tomography have been used for monitoring of the vertical sealing system in Łubna landfill.

scholarly journals Imazamox dissipation in two rice management systems

2016 ◽  
Vol 155 (3) ◽  
pp. 431-443 ◽  
Author(s):  
M. MILAN ◽  
A. FERRERO ◽  
S. FOGLIATTO ◽  
F. DE PALO ◽  
F. VIDOTTO
Keyword(s):  
Ground Water ◽  
Soil Water ◽  
Irrigation Water ◽  
Half Life ◽  
Sampling Site ◽  
Water Environment ◽  
Management Systems ◽  
Quantification Limit ◽  
Dissipation Pattern ◽  
Over Time

SUMMARYThe current study focuses on the dissipation pattern of imazamox (2-[(RS)-4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl]-5-methoxymethylnicotinic acid) in a soil–water environment under the two most adopted rice management systems in Europe, conventional water seeding and dry-seeding. Changes in imazamox concentrations were studied over time in topsoil, field water, irrigation water, outlet water and ground water. The study was performed from 2010 to 2011 in one of the most important rice growing areas of Europe (Vercelli, Northwest Italy). Imazamox dissipated rapidly in both the water and soil environments. In soil, imazamox half-life ranged from 2·2 to 3·3 days in 2010 and from 2·2 to 3·1 days in 2011. In paddy water, imazamox dissipated rapidly and no important differences among the management systems were found. In addition, the study showed that despite the short half-life of imazamox, the herbicide might be transported from treated fields in outlet waters by means of floodgates. The highest concentrations in outlet waters were found in the conventional water-seeded system, at the sampling site close to herbicide spraying. Imazamox residues were even found in inlet waters, suggesting discharge of the herbicide from paddies located upstream or drift during spraying. Imazamox residues in ground waters were always below the quantification limit. Overall, the low imazamox persistence observed during the 2-year study did not allow important differences between the two systems to be revealed. To reduce imazamox discharge from treated fields in the first days after spraying, a useful practice might be to keep water inside the fields for at least a week after spraying.

scholarly journals Analysis of the Metals in Soil-Water Interface in a Manganese Mine

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Bozhi Ren ◽  
Qian Wang ◽  
Yangbo Chen ◽  
Wenjie Ding ◽  
Xie Zheng
Keyword(s):  
Soil Water ◽  
Metal Pollution ◽  
Anthropogenic Activities ◽  
Water Environment ◽  
Mining Industry ◽  
Pollution Index ◽  
Principal Component ◽  
Average Concentration ◽  
Pollution Level ◽  
Water Interface

In order to reveal the influence of the metals of soil-water interface in a manganese mine (Xiangtan, China), on local water environment, there are six kinds of metals (Mn, Ni, Cu, Zn, Cd, and Pb) characterized by measuring their concentration, correlation, source, and special distribution using principal component analysis, single factor, and Nemero comprehensive pollution index. The results showed that the corresponding average concentration was 0.3358, 0.045, 0.0105, 0.0148, 0.0067, and 0.0389 mg/L. The logarithmic concentration of Mn, Zn, and Pb was normal distribution. The correlation coefficients (between Mn and Pb, Mn and Zn, Mn and Ni, Cu and Zn, Cu and Pb, and Zn and Cd) were found to range from 0.5 to 0.6, and those between Cu and Ni and Cu and Cd were below 0.3. It was found that Zn and Mn pollution were caused primarily by ore mining, mineral waste transportation, tailing slag, and smelting plants, while Cu and Ni mainly originate from the mining industry activities and the traffic transportation in the mining area. In addition, the Cd was considered to be produced primarily from the agricultural or anthropogenic activities. The pollution indexes indicated that metal pollution degree was different in soil-water interface streams as listed in increasing order of pollution level as Zn > Ni > Cu > Pb > Mn > Cd. For all of the pollution of the soil-water interface streams, there was moderate metal pollution but along the eastern mine area the pollution seemed to get more serious. There was only a small amount of soil-water interface streams not contaminated by the metals.

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