Stabilisation/solidification of dredging sludge containing polycyclic aromatic hydrocarbons

Mulder, E.; Feenstra, L.; Brouwer, Jacob; Frenay, Jean; Bos, Steven

doi:10.1201/9781439833933.ch30

Cited by 2 publications

(2 citation statements)

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“…Organophilic clays, which were modified by replacing the inorganic cations within the clay crystalline structure with organic cations, and activated carbon [10] have been widely applied as the additives for organic contaminants such as phenolic compounds [11], PAHs and dioxins [12]. Quaternary ammonium salt (QAS) [13] and modified alumina silicate [14] have also been used to stabilize contaminated soils containing organic compounds. The mixing of contaminated soils with quicklime promotes a number of reactions in the soil including flocculation, ion exchange, lime carbonation, dissolution of clay minerals and pozzolanic reactions, and significant amounts of heat energy generated through hydration reaction of lime might lead to destruction of the hydrocarbon compounds by hydrous pyrolysis oxidation [15].…”

Section: Introductionmentioning

confidence: 99%

Stabilization treatment of contaminated soil: a field-scale application in Shanghai, China

Zhang

Luo

Geng

et al. 2010

Front. Environ. Sci. Eng. China

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Stabilization is one of the best demonstrated available technologies for treating toxic pollutants in soils and has been used worldwide but is rarely used for treatment of contaminated sites in China despite many bench-scale studies. Here, a field-scale application of stabilization treatment in Shanghai, China was summarized to demonstrate the whole engineering process and the key technical issues regarding stabilization of contaminated soil. A site contaminated with arsenic (As) and polycyclic aromatic hydrocarbons (PAHs), formerly used as a lighting plant in Shanghai, was chosen as the demonstration site. Stabilizing measures were taken to treat the contaminated soil to reuse the site for residential purposes. The whole engineering remediation process consisted of phase I environmental site assessment (ESA) and phase II ESA, quantitative human health risk assessment, remediation alternatives evaluation, benchscale testing, remedial design, engineering implementation, and post-remediation assessment. A third party conducted evaluation monitoring indicated desirable results were achieved via the stabilization treatment. In addition, some technical obstacles related to soil stabilization treatment were discussed, including soil quality evaluation, stabilization effectiveness validation, and soil reuse assessment.

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Section: Introductionmentioning

confidence: 99%

Stabilization treatment of contaminated soil: a field-scale application in Shanghai, China

Zhang

Luo

Geng

et al. 2010

Front. Environ. Sci. Eng. China

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“…One of the most important parameters is Unconfined Compressive Strength (UCS). The current guideline value for UCS is 350 kPa in US EPA [4], and no lower than 1 MPa [5,6] in Holland and France, but no guideline value exists in China at present.…”

Section: Introductionmentioning

confidence: 99%

The Applications of Zeolite in Sustainable Binders for Soil Stabilization

Shi¹

2012

AMM

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In order to decrease the environmental impact caused by Portland cement in binders for soil stabilization, Zeolite was chosen to replace some percentage of Portland cement. Unconfined Compressive Strength (UCS) was used as a recognized parameter for assessing the performance of soil stabilization. The UCS values of the Zeolite-PC mix in three binder dosages (2.5%, 5.0% and 10%) and at three curing periods (7 days, 28 days and 90 days) were for two model soils; namely a gravel sand and a clayey silt. The experiment results demonstrated that the highest UCS value 1.28MPa, of Zeolite-PC mixes was obtained at 90 days, in a 10% content binder dosage, which has exceeded the current USA guideline of 350kPa, comparing all of the UCS values for all dosages and all curing periods in clayey silt. The highest UCS value of 7.65MPa for Zeolite-PC mixes was achieved at 90 days and in a 10% content binder dosage in gravel sand. In comparison, the PFA (Pulverised Fuel Ash)-PC mixes have presented lower UCS values than the Zeolite-PC mixes with the same content ratio and the same testing time.

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Stabilisation/solidification of dredging sludge containing polycyclic aromatic hydrocarbons

Cited by 2 publications

References 0 publications

Stabilization treatment of contaminated soil: a field-scale application in Shanghai, China

Stabilization treatment of contaminated soil: a field-scale application in Shanghai, China

The Applications of Zeolite in Sustainable Binders for Soil Stabilization

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