Evaluation of the rainwater acidity of a rural region due to a coal-fired power plant in Brazil

Flues, Marlene; Hama, Patrícia; Lemes, M.J.L.; Dantas, Elizabeth Sonoda Keiko; Fornaro, Adalgiza

doi:10.1016/s1352-2310(01)00563-5

Cited by 105 publications

(64 citation statements)

References 15 publications

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“…Their significantly negative correlation (r=-0.50) indicated that increasing precipitation produced a ΔN reduction. This relation was probably due firstly to the increase in the amount of nitrogen loss due to runoff and leaching into the drainage water and secondly to the effective scavenging of the pollutant from the atmosphere (Flues et al, 2002).…”

Section: Factors Correlated With the Nitrogen Balancementioning

confidence: 99%

Nitrogen balance in a hilly semi-agricultural watershed in Northern Italy

et al. 2011

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The research was carried out for 7 years, 1998-2005, in a semi-agricultural watershed, called Centonara, set within a natural regional park and situated in the hills surrounding Bologna, northern Italy. This area is characterized by one of the most interesting badlands complexes in Europe and represents one of the main points of naturalistic interest. The watershed is partially cultivated (about 30% of the total area) with arable crops, mostly cereals and alfalfa. To evaluate the impact of agricultural activity on the eco-sustainability of this area, the nitrogen (N) balance was computed. Although it is only an estimation of the potential environmental damage, the nitrogen balance is a useful indicator of the risk posed to the environment from excessive nitrogen and can be useful to understand the possible effects of a certain type of agricultural and environmental management and policy. The balance was calculated by computing the difference between all inputs and all outputs. The nitrogen balance of the watershed was found to be sustainable, with an annual nitrogen balance ranging between -2.3 and +4.4 kg ha -1 . Despite the limited presence of arable lands, the agricultural management played the main role in determining the sustainability of the watershed, strongly influencing both the principal N sources and sinks. In fact, major N inputs derived from inorganic fertilization (8.1-15.5 kg ha -1 yr -1 ) and biological fixation (8.3-14.3 kg ha -1 yr -1 ). On the other hand, plant removal constituted the most important output (17.7-25.6 kg ha -1 yr -1 ). N losses in the drainage water were limited (3.0-9.5 kg ha -1 yr -1 ) and the Centonara stream water was found to be unpolluted, with a nitrate concentration always below the EU limit for drinking water. The similar magnitude of total N inputs and outputs indicated that the crop management, especially the crop rotation and the N fertilization, in the Centonara watershed has reached a good level of ecological sustainability. Finally, the computation of the N fertilizer-use efficiency index resulted to be useful to identify which crop and which type of management (organic or conventional) were more suitable for the pedo-climatic condition of the studied area.

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Section: Factors Correlated With the Nitrogen Balancementioning

confidence: 99%

Nitrogen balance in a hilly semi-agricultural watershed in Northern Italy

et al. 2011

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“…Some studies have shown the environmental impact of the burning of fossil fuels, like coal, on atmospheric precipitation (Alastuery et al 1999 andFlues et al 2002). In the Candiota area, Rio Grande do Sul, Brazil, some research has been done to determine the existence of acid rain originated from the emissions of the biggest coal-fired power station located in Rio Grande do Sul (Migliavacca et al 2004a, b).…”

Section: Introductionmentioning

confidence: 99%

Study of wet precipitation and its chemical composition in South of Brazil

Teixeira

Migliavacca

Filho

et al. 2008

An. Acad. Bras. Ciênc.

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The purpose of this study is to analyze the chemical composition of wet precipitation in samples collected at three stations in the Candiota region in the Brazilian state of Rio Grande do Sul (RS). Samples were collected in 2004. Variables analyzed in wet precipitation were pH, conductivity, and concentration of Cl − , NO − 3 , SO 2− 4 F − , Na + , Ca 2+ , Mg 2+ , K + , NH + 4 , Cu, Zn, Fe, Mn, Pb, Ni, Cd, Co, and Cr. SO 2 and NO 2 distribution over the time were also evaluated. Results have showed that pH < 5.6 are found mostly at Candiota airport (85%), followed by Aceguá (72%) and Três Lagoas (65%). Enrichment Factor of the studied ions in wet deposition revealed higher Ca 2+ and SO 2− 4 enrichment in Três Lagoas. Factor Analysis applied to metals and major ions allowed identifying the major sources. While Cl − , Na + , Mg 2+ are of marine origin, SO 2− 4 , NO − 3 , NH + 4 , F − come from anthropogenic sources. Except for Fe and Mn originating from the soil dust, the metals studied showed to have anthropogenic influence The average SO 2 and NO 2 concentration, as well as SO 2− 4 and NO − 3 in wet precipitation in the Candiota region showed higher concentrations during the warmer months.

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“…Gromping et al (2007) has reported that more than 90% of the total amount of pollutants present in the atmosphere is lixiviated by wet deposition, being the predominant cleansing mechanism to remove pollutants from the air. Thus, rainwater can be a way to reduce the atmospheric load of pollutants, as well as a source of contamination for soil, water and terrestrial vegetation (Flues et al,2002).…”

Section: Introductionmentioning

confidence: 99%

Physical and Chemical properties of rainwater and its suitability for drinking and irrigating in Erbil city

2017

ZJPAS

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Evaluation of the rainwater acidity of a rural region due to a coal-fired power plant in Brazil

Cited by 105 publications

References 15 publications

Nitrogen balance in a hilly semi-agricultural watershed in Northern Italy

Nitrogen balance in a hilly semi-agricultural watershed in Northern Italy

Study of wet precipitation and its chemical composition in South of Brazil

Physical and Chemical properties of rainwater and its suitability for drinking and irrigating in Erbil city

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