Solidification/stabilization of lead with the aid of bagasse as an additive to Portland cement

Janusa, Michael A; Champagne, Chet A; Fanguy, Joseph C.; Heard, Grant E.; Laine, Patrick L; Landry, April A.

doi:10.1016/s0026-265x(00)00120-x

Cited by 27 publications

(15 citation statements)

References 2 publications

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“…heavy metals) by immobilizing them [1,2]. As a result of the chemical properties of the cement, the solidification/stabilization (S/S) processes may involve both physical entrapment (adsorption) and/or chemical binding (complexation) of the contaminant to the cement matrix.…”

Section: Introductionmentioning

confidence: 99%

Interaction of carboxymethylchitosan and heavy metals in cement media

Lasheras-Zubiate

Navarro-Blasco

Álvarez

et al. 2011

Journal of Hazardous Materials

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The performance of an etherified chitosan, carboxymethyl chitosan (CMCH), when added to cement mortars doped with heavy metals, was assessed. In the presence of heavy metals (Cr, Pb, Zn) strong modifications of the fresh-state properties were evaluated. The addition of the polymer was seen to be useful in minimising some of these modifications, as those related to the setting time. A competitive mechanism for adsorption between the oxoanionic form of the metals and the carboxylate groups of the chitosan derivative was established. Studies on the metal chelating ability of the polymer and leaching from the hardened specimens showed scarce complexation under alkaline conditions, pointing to physical entrapment based on metal adsorption. However, significant chelation of metals was proved at near-neutral pH, suggesting the potential usefulness of the polymer as a agent for removing heavy metals from polluted waters and subsequently immobilizing them in cement mortars. Leaching tests carried out on polymer-metal complex-bearing samples showed a significant reduction in the amount of released Pb and Zn.

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Section: Introductionmentioning

confidence: 99%

Interaction of carboxymethylchitosan and heavy metals in cement media

Lasheras-Zubiate

Navarro-Blasco

Álvarez

et al. 2011

Journal of Hazardous Materials

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“…Table 3 Percentage of Lead Reduction from SPLP Test Table 3 shows the lead-contaminated clay (Sample J) leached out about 75% lead in 18-h extraction. This indicated that, lead was absorbed by clay surfaces or bound in the silicate and organic materials [8]. Additionally, it can observe that all the sample with SCB either treated or untreated has been fulfill the limit of 5 mg/L that stipulated by Kualiti Alam Sdn.…”

Section: Applied Mechanics and Materials Vols 773-774mentioning

confidence: 86%

“…For the treated part, the SCB was boiled with 0.1 M HCl for approximately 45 min, with the residue was washed free of sugars and hydrolysis products. This procedure was repeated 3 to 4 times until the filtrate was virtually colorless [8]. Both type of SCB were dried in the oven under a temperature of 105 °C for 24 hours in order to eliminate the moisture content, then finally were grinded into 90µm of particles size.…”

Section: Methodsmentioning

confidence: 99%

Leaching Behavior of Lead Contaminated Soil Sample by Using Sugarcane Bagasse in Stabilization/Solidification Method

Azmi

Tajudin

Hanif

et al. 2015

AMM

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Abstract. Recently, Stabilization/Solidification (S/S) method has been focusing on the usage of agricultural waste as an alternative towards environmental friendly and low cost material to substitute cement. The aim of this study is to determine the leachability of lead contaminated soil by using sugarcane bagasse as partial replacement of cement in S/S method. In this study, different percentages (2.5%, 5% and 7.5%) of treated and untreated sugarcane bagasse have been utilized as a partial replacement to cement. Toxicity Characteristic Leaching Procedure (TCLP) and Synthetic Precipitation Leaching Procedure (SPLP) have been conducted to determine the leachability of lead contaminated soil. The results indicate that with 7.5% of treated sugarcane bagasse replacement in cement resulted significant reduction of lead contaminant in soil up to 99 % after 28 days. As a conclusion, treated sugarcane bagasse could be an alternative low cost material in the S/S method as it can significantly reduce the remediation cost normally incurred by the usage of cement.

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“…For the treated part, the SCB was boiled with 0.1 MHCl for approximately 45 minutes, with the residue washed free of sugars and hydrolysis products. This procedure was repeated 3 to 4 times until the filtrate was virtually colorless [10]. Both types of SCB were dried in the oven under a temperature of 105 °C for 24 hours in order to eliminate the moisture content before being grinded into a particle size of 90μm.…”

Section: Contamination Of Soilmentioning

confidence: 99%

Relationship of Physical Parameters in Pb-Contaminated by Stabilization/Solidification Method

Tajudin

Azmi

Shahidan

et al. 2016

MATEC Web of Conferences

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Abstract. This research was performed to investigate the relationship between compressive strength, density and water absorption of Pb-contaminated soil treated by Ordinary Portland cement (OPC) incorporated with sugarcane bagasse (SCB) using the Stablisation/Solidification (S/S) method. The SCB and OPC varying from 5% to 15% was added to stabilize and solidify the Pb-contaminated soil. The cylindrical samples were prepared and cured at room temperature for 28 days. Unconfined compression test, density test and water absorption test were conducted on these samples. The relationship between these variables were determined using simple statistical method by Analysis of Variance (ANOVA). Results indicate that there is a strong relationship between compressive strength and density with a regression coefficient of 77.4%. There is also a significant relationship between density and water absorption of approximately 70.7%. In addition, compressive strength and water absorption produced a strong relationship which is 73.6% of variability in strength development. In a nutshell, the strong relationship between these three variables represent the actual physical characteristics in S/S application.

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Solidification/stabilization of lead with the aid of bagasse as an additive to Portland cement

Cited by 27 publications

References 2 publications

Interaction of carboxymethylchitosan and heavy metals in cement media

Interaction of carboxymethylchitosan and heavy metals in cement media

Leaching Behavior of Lead Contaminated Soil Sample by Using Sugarcane Bagasse in Stabilization/Solidification Method

Relationship of Physical Parameters in Pb-Contaminated by Stabilization/Solidification Method

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