Organic radwaste immobilization by permeation of porous cement matrices

Varlakov, A. P.; Germanov, A. V.

doi:10.1007/s10512-012-9601-y

Cited by 2 publications

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“…However, imperviousness and low strength are the dominant properties of MPC fabricated by the preforming method mentioned above. Recently, the application of cement-based porous materials for hazardous wastewater, such as heavy metals and the radioactive nucleus has attracted more and more attention [24,25]. Unlike the applications mentioned above, adsorbent materials require good permeability and high strength to form self-supporting systems, thus achieving good service performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Porous Materials by Magnesium Phosphate Cement with High Permeability

Lai

Yang

et al. 2018

Advances in Materials Science and Engineering

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High permeability and strength magnesium phosphate cement (MPC) with porosity, average pore size, and compressive strength varied from 63.2% to 74%, 138.7 μm to 284.7 μm and 2.3 MPa to 4.7 MPa, respectively, were successfully prepared by combining the physical foaming method and chemically entrained gas method at room temperature. The effects of borax content, chemical foaming agent content, zinc powder content and W/S ratio on the porosity, pore size distribution, compressive strength, and permeability of the MPC were investigated. The results indicate that the chemical foaming agent content tends to have little impact on the porosity and compressive strength, and the zinc powder content has the most significant influence on the average pore size of MPC. The air pores distribution and connectivity of MPC were mainly controlled by the borax content, W/S ratio, and chemical foaming agent content. Zinc powder played a destructive role in the pores formed by the early physical foaming and led to an increase in pore size and a large number of through pores, which increased the permeability of the materials.

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Section: Introductionmentioning

confidence: 99%

Preparation of Porous Materials by Magnesium Phosphate Cement with High Permeability

Lai

Yang

et al. 2018

Advances in Materials Science and Engineering

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“…The methods suggested for reprocessing organic RW (cementation [2], incineration, pyrolysis, including plasma pyrolysis [3], immobilization on sorbents [4], oxidation by various methods [5,6], etc.) do not ensure appreciable reduction of the RW volume, require complex gas treatment facilities, or do not yield a product of the required quality.…”

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confidence: 99%

Structure and hydrolytic durability of a glass containing waste from spent tributyl phosphate reprocessing

Stefanovsky

Barinova²

2016

Radiochemistry

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The structure of the glass obtained by incorporation of the residue from reprocessing of the spent extractant, tributyl phosphate, into sodium aluminophosphate glass and the structural state of uranium in this glass were studied by vibration (IR, Raman) and X-ray absorption (XAFS) spectroscopy. An IR and Raman spectroscopic study shows that the structural network of the glasses is formed by ortho-and pyrophosphate groups linked by tetrahedral AlO 4 units. As follows from the XAFS data, uranium is present in the glass in the form of uranyl ions and of separate UO 2+x particles. The glass has high hydrolytic durability: The uranium leach rate determined in accordance with GOST (State Standard) R 52 126-2003 is of the order of 10 -8 g cm -2 day -1 .

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Organic radwaste immobilization by permeation of porous cement matrices

Cited by 2 publications

References 0 publications

Preparation of Porous Materials by Magnesium Phosphate Cement with High Permeability

Preparation of Porous Materials by Magnesium Phosphate Cement with High Permeability

Structure and hydrolytic durability of a glass containing waste from spent tributyl phosphate reprocessing

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