Etiqueta: Natural radioactivity

Microencapsulation of phosphogypsum into a sulfur polymer matrix: Physico-chemical and radiological characterization

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Abstract The aim of this work is to prepare a new type of phosphogypsum-sulfur polymer cements (PG-SPC) to be utilised in the manufacture of building materials. Physico-chemical and radiological characterization was performed in phosphogypsum and phosphogypsum-sulfur polymer concretes and modeling of exhalation rates has been also carried out. An optimized mixture of the materials was Read more about Microencapsulation of phosphogypsum into a sulfur polymer matrix: Physico-chemical and radiological characterization[…]

Radioactivity levels in aerosol particles surrounding a large TENORM waste repository after application of preliminary restoration work

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Abstract In this paper, 238U-series radionuclides have been analysed in particulate matter samples collected at a phosphogypsum stack system located near the city of Huelva (SW Spain) during the course of 1 year. The results have been compared to those collected at a reference (background) site located a few km away, in order to establish if Read more about Radioactivity levels in aerosol particles surrounding a large TENORM waste repository after application of preliminary restoration work[…]

Radioactive impact in sediments from an estuarine system affected by industrial wastes releases

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Abstract A big fertilizer industrial complex and a vast extension of phosphogypsum piles (12 km2), sited in the estuary formed by the Odiel and Tinto river mouths (southwest of Spain), are producing an unambiguous radioactive impact in their surrounding aquatic environment through radionuclides from the U-series. The levels and distribution of radionuclides in sediments from Read more about Radioactive impact in sediments from an estuarine system affected by industrial wastes releases[…]

Natural radioactivity in waters and sediments from a Spanish mining river

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Abstract In this work we present results of a study concerning the distribution and behaviour of several natural radionuclides (U, Th-isotopes, 210Po and gamma-emitters) in a mining river located in the southwest of Spain. Enhancements of U concentrations relative to other analysed isotopes within the U series have been observed, being due to co-precipitation of Read more about Natural radioactivity in waters and sediments from a Spanish mining river[…]

Radioecological study of an estuarine system located in the south of Spain

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Abstract A big fertilizer industrial complex and a vast extension of phosphogypsum piles (12 km2), sited in the estuary formed by the Odiel and Tinto river mouths (south-west of Spain), are producing an unambiguous radioactive impact in their sourrounding aquatic environment, through radionuclides from the U-series. The levels and distribution of radionuclides in the different water Read more about Radioecological study of an estuarine system located in the south of Spain[…]

Enhancement of natural radioactivity in soils and salt-marshes surrounding a non-nuclear industrial complex

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Abstract The existence of a very high extension (about 1000 ha) of phosphogypsum piles, sited in the estuary formed by the mouths of the Tinto and Odiel rivers (SW Spain), produce a quite local, but unambiguous radioactive impact in the surrounding salt-marshes. In these piles the main by-product formed in the manufacture of phosphoric acid Read more about Enhancement of natural radioactivity in soils and salt-marshes surrounding a non-nuclear industrial complex[…]