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Radiometrical and physico-chemical characterisation of contaminated glass waste from a glass dump in Sweden.

08:00 EDT 26th September 2019 | BioPortfolio

Summary of "Radiometrical and physico-chemical characterisation of contaminated glass waste from a glass dump in Sweden."

Around former glass factories in south eastern Sweden, there are dozens of dumps whose radioactivity and physico-chemical properties were not investigated previously. Thus, radiometric and physico-chemical characteristics of waste at Madesjö glass dump were studied to evaluate pre-recycling storage requirements and potential radiological and environmental risks. The material was sieved, hand-sorted, leached and scanned with X-Ray Fluorescence (XRF). External dose rates and activity concentrations of Naturally Occurring Radioactive Materials from U, Th series and K were also measured coupled with a radiological risk assessment. Results showed that the waste was 95% glass and dominated by fine fractions (<11.3 mm) at 43.6%. The fine fraction had pH 7.8, 2.6% moisture content, 123 mg kg Total Dissolved Solids, 37.2 mg kg Dissolved Organic Carbon and 10.5 mg kg fluorides. Compared with Swedish EPA guidelines, the elements As, Cd, Pb and Zn were in hazardous concentrations while Pb leached more than the limits for inert and non-hazardous wastes. With K activity concentration up to 3000 Bq kg, enhanced external dose rates of K were established (0.20 μSv h) although no radiological risk was found since both External Hazard Index (H) and Gamma Index (I) were <1. The glass dump needs remediation and storage of the waste materials under a safe hazardous waste class 'Bank Account' storage cell as a secondary resource for potential future recycling.

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This article was published in the following journal.

Name: Chemosphere
ISSN: 1879-1298
Pages: 124964

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