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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, Algarve.

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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.

Item type: Conference or Workshop Item (Paper)
ID code: 36645
Keywords: geosta, chromium stabilizer , contaminated soils, geotechnical studies, Engineering (General). Civil engineering (General)
Subjects: Technology > Engineering (General). Civil engineering (General)
Department: Faculty of Engineering > Civil and Environmental Engineering
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 12 Jan 2012 09:37
Last modified: 04 Oct 2012 17:53
URI: http://strathprints.strath.ac.uk/id/eprint/36645

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