Stabilization and solidification of lead in contaminated soils

Lin, S.L.; Cross, W.H.; Chian, Edward S. K.; Lai, James S.; Giabbai, M.; Hung, Chien-ho

doi:10.1016/0304-3894(95)00143-3

Cited by 39 publications

(19 citation statements)

References 5 publications

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“…It can also be used to determine the volume of wastes to be treated, shipped off site, or returned to the site (Lin et al 1996).…”

Section: Test Methods For S/s Treated Soilsmentioning

confidence: 99%

A review of the mechanical and leaching performance of stabilized/solidified contaminated soils

Kogbara

2014

Environ. Rev.

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Stabilization/solidification (S/S) technology, which basically involves chemical fixation and immobilization of contaminants (primarily metals) in the matrix of cementitious binders, is widely used for treatment of contaminated soils. This paper presents a critical review of the performance of commonly used blended binder systems in S/S technology. The binders considered are Portland cement and blends of cement–fly ash, cement–slag, lime–slag, and lime–fly ash. This work compares and evaluates the performance of contaminated soils treated by the binders in terms of commonly used mechanical and leaching properties, including unconfined compressive strength (UCS), bulk density, hydraulic conductivity, and leachability. The long-term performance of S/S-treated soils is also reviewed. It was observed that the inclusion of slag in a binder blend gave superior performance compared to fly ash. Generally, the leachability of common contaminants in soil can be reduced to acceptable levels with approximately 20%–35% dosage of the different binders. The UCS was observed to be optimum around the optimum water content for compaction. The hydraulic conductivity was approximately 10−9 m/s over time. Long-term performance of treated soils showed consistent effectiveness over a period of 5–14 years with fluctuations in mechanical and leaching behaviour caused by the complex nature and variability of S/S-treated soils.

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“…It can also be used to determine the volume of wastes to be treated, shipped off site, or returned to the site (Lin et al 1996).…”

Section: Test Methods For S/s Treated Soilsmentioning

confidence: 99%

A review of the mechanical and leaching performance of stabilized/solidified contaminated soils

Kogbara

2014

Environ. Rev.

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“…Lombardi et al [13] reported UCS reduction of about 80%, but more than sufficient for disposal in landfill. Lin et al [24] S/S lead bearing waste with sulphur, sulphur extended asphalt (SEA), OPC type I. The 7-day UCS increased with sulphur, after the particles and contaminants were wetted.…”

Section: Interferences Of Waste In Strength Developmentmentioning

confidence: 96%

Factors affecting hazardous waste solidification/stabilization: A review

Malviya

Chaudhary

2006

Journal of Hazardous Materials

371

148

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“…Sulfur in an alkaline matrix such as cement paste is a chemically stable material (86,87). Considering the SEM and EDS analysis, it can be concluded that the reaction of sulfur with hydrated cementitious phases does not happen.…”

Section: Microstructurementioning

confidence: 99%

Effects of waste sulfur content on properties of self-compacting concrete

et al. 2020

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Self-compacting concrete (SCC) contains fine mineral fillers such as limestone powder. The idea of this study was to partially replace limestone with waste sulfur since it is hydrophobic, insoluble in water and therefore chemically inert and to compare the properties of produced concrete samples. Fresh concrete properties included: slump-flow, t500, V-funnel time, L-box ratio, segregation ratio, density, and entrained air content. Hardened concrete was tested for compressive, flexural and bond strengths, ultrasonic velocity, dynamic elasticity modulus, dynamic Poisson’s ratio, and microstructure. Flowability and segregation increased, while bulk density, compressive and flexural strength, dynamic elasticity modulus and ultrasonic velocity slight declined. Times t500 and V-funnel time, L-box ratio and entrained air changed insignificantly. Considering that all properties should remain or improve in case of waste valorization and the criteria should set to satisfy requirements for SCC, this study proved that all mixtures can be used for structural applications.

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Stabilization and solidification of lead in contaminated soils

Cited by 39 publications

References 5 publications

A review of the mechanical and leaching performance of stabilized/solidified contaminated soils

A review of the mechanical and leaching performance of stabilized/solidified contaminated soils

Factors affecting hazardous waste solidification/stabilization: A review

Effects of waste sulfur content on properties of self-compacting concrete

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