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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Assessment of hexavalent chromium stabilizer in artifically contaminated soil using geosta as a secondary binder

Fotis, Panagiotis and Hytiris, Nicholas and Keenan, Helen (2009) Assessment of hexavalent chromium stabilizer in artifically contaminated soil using geosta as a secondary binder. In: International Conference on Sustainable Building: Sustainable building affordable to all., 2009-03-17 - 2009-03-19.

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Abstract

The aim of this study was to investigate the effect of a secondary binder (Geosta) as a stabilizer on the geotechnical properties of Cr+6 contaminated soils with the use of S/S technology and to evaluate the efficacy of different mix designs via the Static Diffusion Test. Artificial contamination with Cr+6 was applied in four representative samples of soil material, weighting approximately 15 Kg each. The initial chromium concentration per cube was estimated at 128.5 mg/l and all mix designs studied were shown to be capable of reducing hexavalent chromium concentrations from 96 to 99%. The mix design which contained 400 g of Geosta, proved to be the most effective since the lowest release of chromium with maximum chromium retention (99.4%) was documented. Mix designs with 200 and 300 g of Geosta were considered to be successful in Cr+6 immobilization (with a total of 99.1 and 99% retention ability, respectively), however it was proved that the quantity of secondary binder used in a mix design is not proportional to its chromium retention capability.