Contribution to the Study of the Mercury Immobilization by an Eco-construction Material

Imad, El Fellah; Rabie, Fath Allah; Asmaa, Fakih Lanjri; Ammari, Mohammed; Laïla, Ben Allal

doi:10.1007/978-3-030-90633-7_11

Cited by 1 publication

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References 18 publications

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“…Furthermore, the change of conductivity was not detected with the addition of low concentrations of the chromium hexavalent (0.1 and 0.3%Cr), which indicates less influence on gel structure of the samples. This result is in agreement with the study of El fellah et al, about the Hg(II) addition [26]. Moreover, El-Eswed et al, indicated a high stabilization of conductivity with the addition of 0.5% Th(IV) and 0.5% U(VI) in metakaolin-based geopolymers [27], and 200ppm of Cr(III) in kaolin/zeolite-based geopolymers [28].…”

Section: Figure 4 the Effect Of Chromium Concentrations With Time On ...supporting

confidence: 91%

The Effect of Chromium on the Chemical and Physical Properties of Industrial Sludge Based Geopolymer

Imad¹,

Rabie²,

Asmaa³

et al. 2022

RCMA

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This paper investigates the immobilization of chromium in the industrial sludge-based geopolymer. Mechanical, physical and microstructure properties were used to characterize different samples. The results show that lower heavy metals addition has less effect on the compressive strength. However, excessive addition of Cr(VI) (1.5 and 3%) causes a deterioration of geopolymer matrix with a significant drop of the compressive strength. The compressive strength shows that the use of sodium hydroxide as an alkaline activator is not suitable for chromium immobilization. The use of 1.5 and 3% amount of chromium increases the conductivity of leachates, which explains a change in the microstructure of materials. This is in agreement with the results of compressive strength. XRD patterns of all samples show an amorphous structure with less effect of chromium on the crystalline phases. SEM of the reference sample demonstrates a dense structure of binder. However, the porosity of the matrix increases with the addition of 3% Cr(VI).

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Section: Figure 4 the Effect Of Chromium Concentrations With Time On ...supporting

confidence: 91%

The Effect of Chromium on the Chemical and Physical Properties of Industrial Sludge Based Geopolymer

Imad¹,

Rabie²,

Asmaa³

et al. 2022

RCMA

Self Cite

View full text Add to dashboard Cite

show abstract

Contribution to the Study of the Mercury Immobilization by an Eco-construction Material

Cited by 1 publication

References 18 publications

The Effect of Chromium on the Chemical and Physical Properties of Industrial Sludge Based Geopolymer

The Effect of Chromium on the Chemical and Physical Properties of Industrial Sludge Based Geopolymer

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