Natural radionuclide content of disposed phosphogypsum as TENORM produced from phosphorus fertilizer industry in Turkey

Gezer, F.; Turhan, Şeref; Uğur, F. A.; Gören, E.; Kurt, M.; Ufuktepe, Y.

doi:10.1016/j.anucene.2012.07.018

Cited by 28 publications

(6 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further investigation by Laser granulometry showed that D50s of the studied PGF sample varied between 40 and 50 μm, favoring the physical interactions between particles. The obtained results are consistent with those presented for the PG Tunisian [15] and for other PG from Canada [44], Morocco [45][46][47] and Turkey [48]. Grain size distribution allowed the classification of PG samples as sandy loam; the percentage of the less than 80 μm sieve varied between 60 and 75% (Table 1).…”

Section: Resultssupporting

confidence: 88%

Tunisian phosphogypsum tailings: Assessment of leaching behavior for an integrated management approach

Zmemla

Sdiri

Naifar

et al. 2019

Environmental Engineering Research

View full text Add to dashboard Cite

This study has been carried out to evaluate the leaching behavior of Tunisian phosphogypsum (PG) tailings in Skhira city (southern Tunisia). Two PG samples, including old and freshly deposited samples, were characterized in terms of physical, geotechnical, mechanical, chemical and mineralogical properties. Special attention was paid to their leaching behavior when subjected to standard leaching tests. Our results indicated that both samples are mainly composed of more than 31.85% CaO and 31.4% SO3, indicating the predominance of gypsum. This was further confirmed by XRD patterns that revealed the presence of characteristic reflections of gypsum, brushite, quartz and Maladrite. Compressive strength after 90 d exceeded 769 kPa, but still lower than that of natural sand (1,800 kPa). Leaching test was proposed as an appropriate method to determine the released contaminants from PG. The obtained results showed that Fluorine and Phosphorus are the most released elements from PG with 40 and 30%, respectively. The released Se, Cd, and Zn were the only trace elements that exceeded the threshold limits. It seemed that leached element concentrations were independent aging or particle size of the PG. Based on the assessment of leaching behavior, an integrated management approach of the PG deposits was proposed.

show abstract

Section: Resultssupporting

confidence: 88%

Tunisian phosphogypsum tailings: Assessment of leaching behavior for an integrated management approach

Zmemla

Sdiri

Naifar

et al. 2019

Environmental Engineering Research

View full text Add to dashboard Cite

show abstract

“…Phosphogypsum may contain specific activities of 226 Ra between one and two orders of magnitude higher than those of natural gypsum, depending on the uranium content of the ore (Menzel, 1968). Due to the enrichment of radionuclides, phosphogypsum is classified as a technologically enhanced naturally occurring radioactive material (TENORM) (Shakhashiro et al, 2010;Tayibi et al, 2009;Gezer et al, 2012). The decay of 226 Ra in the phosphogypsum will result in the formation and reappearance of daughter nuclides and radioactive equilibrium will be re-established.…”

Section: Towards Zero-waste Valorisation Of Phosphogypsummentioning

confidence: 99%

Towards zero-waste valorisation of rare-earth-containing industrial process residues: a critical review

Binnemans

Jones

Blanpain

et al. 2015

Journal of Cleaner Production

510

282

View full text Add to dashboard Cite

The supply risk for some critical rare-earth elements (REEs), which are instrumental in many cleantech applications, has sparked the development of innovative recycling schemes for Endof-Life fluorescent lamps, permanent magnets and nickel metal hydride batteries. These waste fractions represent relatively small volumes, albeit with relatively high rare-earth contents.Nevertheless, rare earths are also present in lower concentrations in a multitude of industrial process residues, such as phosphogypsum, bauxite residue (red mud), mine tailings, metallurgical slags, coal ash, incinerator ash and waste water streams. This review discusses the possibilities to recover rare earths from these "secondary resources", which have in common that they contain only low concentrations of rare-earth elements, but are available in very large volumes and could provide significant amounts of rare earths. The success rate is set to increase if the rare-earth recovery from these industrial waste streams is part of a comprehensive, zero-waste, "product-centric" valorisation scheme, in which applications are found for the residual fractions that are obtained after removal of not only the rare earths but also other valuable (base) metals.

show abstract

“…More than 95.3% of PG, a contaminant and environmentally-harmful chemical (Tayibi et al, 2009;P erez-L opez et al, 2010), still piled up in the gypsum factory. This long-term piling up of PG not only wastes resources and takes up land, but also seriously pollutes the surrounding water and soil structure with the trace elements and radioactive elements contained in PG (Rutherford et al, 1994;García-Talavera et al, 2011;Gezer et al, 2012). Given the large amount of PG stack, the firm should fully exert its advantages to change pollutants into resources and take initiative to expand the approaches of the comprehensive utilization of PG in order to maximize both economic and environmental benefits.…”

Section: Substance Flow Analysis and Assessmentmentioning

confidence: 98%

A case study of a phosphorus chemical firm's application of resource efficiency and eco-efficiency in industrial metabolism under circular economy

Chen

et al. 2015

Journal of Cleaner Production

View full text Add to dashboard Cite

Natural radionuclide content of disposed phosphogypsum as TENORM produced from phosphorus fertilizer industry in Turkey

Cited by 28 publications

References 24 publications

Tunisian phosphogypsum tailings: Assessment of leaching behavior for an integrated management approach

Tunisian phosphogypsum tailings: Assessment of leaching behavior for an integrated management approach

Towards zero-waste valorisation of rare-earth-containing industrial process residues: a critical review

A case study of a phosphorus chemical firm's application of resource efficiency and eco-efficiency in industrial metabolism under circular economy

Contact Info

Product

Resources

About