Waste foundry sand and its leachate characteristics

Siddique, Rafat; Kaur, Gurpreet; Rajor, Anita

doi:10.1016/j.resconrec.2010.04.006

Cited by 122 publications

(63 citation statements)

References 23 publications

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“…When the sand can no longer be reused, it becomes a hazardous material according to European regulations as quoted by AlonsoSanturde et al [1], since it can contain heavy metals and different pollutants [2][3]. The usual fate of this sand -several MT per year -is to be landfilled after a previous process of solidification/stabilization.…”

Section: Introductionmentioning

confidence: 99%

A novel use of calcium aluminate cements for recycling waste foundry sand (WFS)

Navarro-Blasco

Fernández

Durán

et al. 2013

Construction and Building Materials

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The recycling of WFS in calcium aluminate cement mortars at high level of replacement (50%) was studied. Consistency and setting time were measured in fresh mortars. Two different curing conditions were used, the second one with the aim of enhancing the formation of stable cubic calcium aluminate hydrates. Compressive strength, pore size distribution and SEM examination were carried out to assess the effectiveness of CAC matrix in the recycling of WFS. The effect of the incorporation of a polymeric admixture -a chitosan derivative -was also explored. Leaching studies on hardened mortars of three target pollutants of the WFS (toxic metals Pb, Cr and Zn) were also done to evaluate their immobilization. By comparison with OPC mortars, the use of CAC showed several advantages, improving the compressive strength and the toxic metal retention.

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Section: Introductionmentioning

confidence: 99%

A novel use of calcium aluminate cements for recycling waste foundry sand (WFS)

Navarro-Blasco

Fernández

Durán

et al. 2013

Construction and Building Materials

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“…Lastly in the fourth group of xenobiotic organic compounds it may contain the compounds of halogenated organics. [5] …”

Section: Composition Of Leachatementioning

confidence: 99%

A Study on Leachate Characteristics Generated From Waste Foundry Sand and Its Impact on Water Bodies

.¹

2015

IJRET

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“…Some of the application areas included highway-bases and retaining structures, landfill liners, asphalt concrete, portland cement concrete, hydraulic barrier, coarse and fine aggregates, road-base material, flowable fill and pavement-bases works. Other studies have shown that the thermal or biological remediation of the foundry sands provides an important opportunity for improving their land applications (US EPA, 2006;Siddique et al, 2010;Alonso-Santurde et al, 2011;Bhimani et al, 2013;Visekruna et al, 2011;Strkalj et al, 2013;Sundari and Meenambal, 2013;Zing-Yi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and kinetic adsorption study of aqueous basic dye solutions using waste foundry sand

Gürkan

Çoruh

2017

IJGW

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Abstract:The aim of this study is to evaluate adsorption kinetics, isotherms and thermodynamic parameters of crystal violet (CV) and methylene blue (MB) dyes from aqueous solution using waste foundry sand. Adsorption studies were carried out at different initial dye concentrations (12.5 -400 mg l -1 ), contact time (5 -240 min), pH (3.0 -9.0), sorbent doses (0.125 -2 g l -1 ) and adsorption temperature (20°C -70°C). The equilibrium adsorption data were analysed by Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (DRK) adsorption isotherm models. Of the four adsorption isotherms, the R 2 value of Langmuir isotherm model for MB and CV were 0.969 and 0.926, respectively. Experimental data were analysed using the pseudo-first order, the pseudo-second order, intraparticle diffusion and Elovich models. The characteristic parameters for each model have been determined. In addition, the equilibrium thermodynamic parameters, including changes in Gibbs free energy, entropy and enthalpy are determined for the CV and MB on waste foundry sand.

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Waste foundry sand and its leachate characteristics

Cited by 122 publications

References 23 publications

A novel use of calcium aluminate cements for recycling waste foundry sand (WFS)

A novel use of calcium aluminate cements for recycling waste foundry sand (WFS)

A Study on Leachate Characteristics Generated From Waste Foundry Sand and Its Impact on Water Bodies

Equilibrium and kinetic adsorption study of aqueous basic dye solutions using waste foundry sand

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