Cesium retention and release from sulfur polymer concrete matrix under normal and accidental conditions

Szajerski, Piotr; Bogobowicz, Agnieszka; Gasiorowski, Andrzej

doi:10.1016/j.jhazmat.2019.121180

Cited by 26 publications

(7 citation statements)

References 72 publications

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“…All gamma-ray spectra were collected during 80,000 s inside the 5-cm-thick wall lead shield lined with the 5 mm steel cylinder inside sample chamber. Details of the experimental system are described elsewhere (Bem et al 2002;Szajerski et al 2019aSzajerski et al , 2019bSzajerski et al , 2020. The collected spectra were analyzed using Geenie2000 software.…”

Section: Radionuclides Determinationmentioning

confidence: 99%

Distribution of uranium and thorium chains radionuclides in different fractions of phosphogypsum grains

Szajerski

2020

Environ Sci Pollut Res

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This work presents results obtained using gamma spectrometry measurements of phosphogypsum samples on a non-fractionated (native) and fractionated phosphogypsum byproduct. The phosphogypsum was divided into particles size fractions within the range of < 0.063, 0.063-0.090, 0.090-0.125, 0.125-0.250, and over 0.250 mm and analyzed after reaching radioactive equilibrium using high-resolution gamma spectrometry technique. It was found that there is no significant differentiation between 226 Ra distribution among particular grain size fractions of this material; however, tendency for preferential retention of radionuclides in particular grain size fractions is observed. The detailed analysis of results revealed that radium is preferentially retained in smaller grain size fractions, whereas lead and thorium in coarse fractions. The results indicate that overall 226 Ra activity concentrations between particular fractions of phosphogypsum vary globally between − 34 and + 47% regarding non-fractionated material, and for 210 Pb activity concentration, fluctuations are found between − 26 up and + 38%. Presumably, the mechanism of radium incorporation into gypsum phase is based on a sequence of radium bearing sulfate phases formation followed by a surface adsorption of these phases on the calcium sulfate crystals, whereas for lead and thorium ions, rather incorporation into crystal lattice should be expected as more likelihood process.

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Section: Radionuclides Determinationmentioning

confidence: 99%

Distribution of uranium and thorium chains radionuclides in different fractions of phosphogypsum grains

Szajerski

2020

Environ Sci Pollut Res

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“…[29][30][31][32][33][34] Such sulfur cements can exhibit high mechanical strength typical of OPC but with greater environmental resilience to acidic conditions and weather-induced degradation. [30][31][32][35][36][37][38][39][40][41][42][43][44][45][46][47] Most high sulfur content materials (HSMs) reported to date have been prepared by inverse vulcanization (Scheme 1), 48 a reaction analogous to Goodyear's vulcanization, 49 but generally using a greater proportion of sulfur. During inverse vulcanization reactions, sulfur -an underutilized by-product of fossil fuel refining -is heated to temperatures above 159 1C to generate sulfur radicals that react with olefins to generate chemically stable materials with enhanced properties.…”

Section: Introductionmentioning

confidence: 99%

“…29–34 Such sulfur cements can exhibit high mechanical strength typical of OPC but with greater environmental resilience to acidic conditions and weather-induced degradation. 30–32,35–47…”

Section: Introductionmentioning

confidence: 99%

Chemical recycling of poly(ethylene terephthalate)viasequential glycolysis, oleoyl chloride esterification and vulcanization to yield durable composites

Lopez

Smith

2023

Mater. Adv.

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“…(ii) Chemical and corrosion resistance: Sulfur concrete demonstrates excellent resistance to chemicals and corrosion, making it an ideal choice for structures exposed to harsh environments, such as wastewater treatment plants and coastal regions [19][20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

Application of Sulfur-2,4-dinitrophenylhydrazine as Modifier for Producing an Advantageous Concrete

Turaev,

Shavkatova,

Amanova

et al. 2023

Baghdad Sci.J

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In this investigative endeavor, a novel concrete variety incorporating sulfur-2,4-dinitrophenylhydrazine modification was developed, and its diverse attributes were explored. This innovative concrete was produced using sulfur-2,4-dinitrophenylhydrazine modification and an array of components. The newly created sulfur-2,4-dinitrophenylhydrazine modifier was synthesized. The surface texture resulting from this modifier was examined using SEM and EDS techniques. The component ratios within concrete, chemical and physical traits derived from the sulfur-2,4-dinitrophenylhydrazine modifier, chemical and corrosion resistance of concrete, concrete stability against water absorption, concrete resilience against freezing, physical and mechanical properties, durability, elastic modulus, and thermal expansion coefficient of the examined sulfur-infused concrete were assessed. The acquired results also substantiated that the thermal expansion coefficient value for sulfur-2,4-dinitrophenylhydrazine modified concrete was 14.8×10-6/0C. The average deformation of the analyzed concrete was 0.0026-0.0051, indicating a superior deformation performance compared to conventional concretes. Concrete with smaller aggregate sizes exhibited greater density, specifically 2283 kg/m3. The concrete density decreased gradually with an increase in aggregate size. The stability of sulfur-2,4-dinitrophenylhydrazine modified concrete was remarkably high in various aggressive environments. EDS analysis revealed that carbon atoms constituted 56.63% of the total mass, while sulfur made up 33.91% of the total mass. The obtained SEM outcomes demonstrated that the sulfur-2,4-dinitrophenylhydrazine modifier exhibited a more porous structure, devoid of crystalline formations. The sulfur-2,4-dinitrophenylhydrazine modification experienced a single-stage thermal mass loss, with the mass loss events being endothermic in nature. The IR findings verified the presence of amino functional groups (connected melamine ring) and the establishment of polymer sulfur chains.

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Cesium retention and release from sulfur polymer concrete matrix under normal and accidental conditions

Cited by 26 publications

References 72 publications

Distribution of uranium and thorium chains radionuclides in different fractions of phosphogypsum grains

Distribution of uranium and thorium chains radionuclides in different fractions of phosphogypsum grains

Chemical recycling of poly(ethylene terephthalate)viasequential glycolysis, oleoyl chloride esterification and vulcanization to yield durable composites

Application of Sulfur-2,4-dinitrophenylhydrazine as Modifier for Producing an Advantageous Concrete

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