The application of phosphogypsum in agriculture and the radiological impact

Papastefanou, C.; Stoulos, S.; Ioannidou, A.; Manolopoulou, M.

doi:10.1016/j.jenvrad.2006.05.005

Cited by 180 publications

(90 citation statements)

References 16 publications

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“…In general, the PG generated by H 3 PO 4 industries in Brazil has natural radionuclide activity concentrations well below the values observed in other countries (Silva et al, 2001;Papastefanou et al, 2006). The highest 232 Th activity concentration in relation to 238 U activity concentration can be explained by the igneous origin of the rock used in the H 3 PO 4 production process.…”

Section: Resultsmentioning

confidence: 83%

“…The possibility of using PG in agriculture (FIRP, 1996;El-Mrabet et al, 2003;Papastefanou et al, 2006) has been the focus of research in several countries and in Brazil, especially with regard to the agriculture in the Cerrado (Ribeiro et al, 2000;Ernani et al, 2001). The soil properties in this region are compatible with the use of this PG.…”

Section: Introductionmentioning

confidence: 99%

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Radionuclides and heavy metal contents in phosphogypsum samples in comparison to cerrado soils

Jacomino

Oliveira²,

Taddei

et al. 2009

Rev. Bras. Ciênc. Solo

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Phosphogysum (PG) or agricultural gypsum, a solid waste from the phosphate fertilizer industry, is used as soil amendment, especially on soils in the Cerrado region, in Brazil. This material may however contain natural radionuclides and metals which can be transferred to soils, plants and water sources. This paper presents and discusses the results of physical and chemical analyses that characterized samples of PG and compares them to the results found in two typical soils of the Cerrado, a clayey and sandy one. These analyses included: solid waste classification, evaluation of organic matter content and of P, K, Ca, Mg, and Al concentrations and of the mineralogical composition. Natural radionuclides and metal concentrations in PG and soil samples were also measured. Phosphogypsum was classified as Class II A -Not Dangerous, Not Inert, Not Corrosive and Not Reactive. The organic matter content in the soil samples was low and potential acidity high. In the mean, the specific 226 Ra activity in the phosphogypsum samples (252 Bq kg -1 ) was below the maximum level recommended by USEPA, which is 370 Bq kg -1 for agricultural use. In addition, this study verified that natural

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Section: Resultsmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Radionuclides and heavy metal contents in phosphogypsum samples in comparison to cerrado soils

Jacomino

Oliveira²,

Taddei

et al. 2009

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…It is also known that heavy metals are found in nature, in the soil organic material, clay, in the Fe or Mn oxides, carbonates, etc., without disturbing the ecological balance [17][18][19].…”

Section: Methodsmentioning

confidence: 99%

Environmental Safety for Chernozem Soil Fertilized with Phosphogypsum and Ash for Spring Wheat Cultivation in North Kazakhstan

2016

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Abstract. Currently, year by year the industrial waste stockpiles increase, but at the same time its recycling is not more than 10-15% of the production. There are several methods of recycling of such waste as phosphogypsum and ash, among which one of the perspective directions is considered using them in agriculture as fertilizer and ameliorator. The limiting factor of their widespread use in agriculture is the presence of heavy metals and radionuclides in them. This article presents data about environmental safety of using phosphogypsum and ash for cultivation spring wheat on the chernozem soils of Northern Kazakhstan. According to the results of research, using phosphogypsum and ash doesn't give negative impact on the environment, the presence of heavy metals and radionuclides in the soil and grain do not exceed the maximum allowable concentrations.

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“…It is caused by the possibility of application of certain amount of heavy metals (HM) along with phosphogypsum into ecosystems amplifying their migration in the soil environment by means of soil solution souring with phosphogypsum, getting into trophic chains, and increasing of anthropogenic pressure on ecosystems [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Modelling of the vertical migration process of phosphogypsum components in the soil profile

Chernysh¹,

Plyatsuk²,

Yakhnenko³

et al. 2017

JES

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Abstract. This paper focuses on the study of the process of vertical migration of phosphogypsum components according to the soil profile. The qualitative and quantitative identification of main biogenic elements (phosphorus, sulphur, calcium etc) and heavy metals in lysimetric solutions from various horizons while getting on the surface of soil solutions containing phosphogypsum components is carried out by means of designed laboratory and experimental complex. The mineral hard soil fraction is also analysed. According to the results of the X-ray diffractometrical researches, the carbonates with heavy metals in their structure, caused by the ion-exchange with Са2+, were found in the mineral structure of the illuvial horizon soil samples. The results of experimental modeling indicate significant changes in the chemical parameters of groundwater, which are obtained by passing water with phosphogypsum particles on a model soil profile, which makes it easy to track the input data. In the upper part of the profile after 1 000 hours and for the first speed of the infiltration process, the constant moisture level was 25,6%, after the second speed of infiltration, it rose to 29.1 %. Noted that the highest concentration of biogenic elements (calcium, sulfur, potassium) was found in lysimetric solutions obtained from the humus and eluvial horizons. In addition, it is determined that iron is present up to 5 %, nickel -within the range of 1-3 %, and copper -up to 1 %. It should be noted that the biochemical transformations of silicon influence the fractional distribution of heavy metals, which can be fixed by sorption-sedimentation mechanisms in silica, oligo and polysilicon compounds, as well as in crystalline lattice structures of clay minerals, quartz, etc. The model of soil and geochemical situation was formed according to the soil profile under the influence of the phosphogypsum within the three-dimensional surface, developed with the help of the stochastic reconstructions based on the images of the scan electron microscopes.

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The application of phosphogypsum in agriculture and the radiological impact

Cited by 180 publications

References 16 publications

Radionuclides and heavy metal contents in phosphogypsum samples in comparison to cerrado soils

Radionuclides and heavy metal contents in phosphogypsum samples in comparison to cerrado soils

Environmental Safety for Chernozem Soil Fertilized with Phosphogypsum and Ash for Spring Wheat Cultivation in North Kazakhstan

Modelling of the vertical migration process of phosphogypsum components in the soil profile

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