Assumptions of powdered building wastes for selective adsorption of lead and cesium from water

Doušová, Barbora; Reiterman, Pavel; Keppert, Martin; Lhotka, Miloslav; Koloušek, Dávid; Mastný, Libor; Bedrnová, Eva

doi:10.1063/5.0000383

Cited by 2 publications

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“…This is because the remaining concrete sludge (B) is landfilled without further use, along with several other wastes from the construction industry, such as powder waste from the production and treatment of technical stone (TS), which currently has no other application [ 4 ]. However, sewage sludges have a large specific surface area (S BET ), suitable structural properties and chemical composition (Si, Ca, Al and Fe content), which predetermine their possible applications in environmental technologies, for example, as adsorbents for removing toxic ions from contaminated waters [ 4 , 8 , 9 ].…”

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confidence: 99%

Adsorption of Phosphate and Ammonium on Waste Building Sludge

et al. 2023

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Two selected waste building sludges (WBS) were used in this study: (i) sludge from the production and processing of prestressed concrete pillars (B) and (ii) sludge from the production of technical stone (TS). The materials were used in their original and Fe-modified forms (BFe/TSFe) for the adsorption of NH4+ and PO43− from contaminated waters. The experiments were performed on a model solution simulating real wastewater with a concentration of 1.7 mmol·L−1 (NH4+) and 0.2 mmol·L−1 (PO43−). The adsorption of PO43− had a high efficiency (>99%) on B, BFe and TSFe, while for TS, the adsorption of PO43− was futile due to the high content of available P in the raw TS. The adsorption of NH4+ on all sorbents (B/BFe, TS/TSFe) had a lower efficiency (<60%), while TS proved to be the most effective. Leaching tests were performed according to the CSN EN 12457 standard for B/BFe and TS/TSFe before and after NH4+ and PO43− sorption when the contents of these ions in the leachates were affected by adsorption experiments in the cases of B and TS. For BFe and TSFe, the ion content in the leachates before and after the adsorption experiments was similar.

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