The aim of this work is to examine the stabilization or immobilization of heavy metals such as Pb (NO3)2 in a various paste of slag and slag-FA based and on geopolymer pastes. Geopolymer prepared by 100% slag and partially substitution of slag by 15% Fly ash (FA) [85% slag+15%FA]. The alkaline activator is (1:1) liquid sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) solution (the concentration of sodium hydroxide is 5 Molar). Different percentages of Pb (NO3)2 were added to the alkali activation mixture, 0.5%, and 1% by mass% of the solid binder. The obtained geopolymer specimens are cured in water for 90 days. The compressive strength test, combined water content, X-ray diffraction (XRD), Atomic absorption, and Transform infrared spectrometry (FTIR) are examined. The results showed that the used lead nitrate caused a retarding effect for the hydration of the investigated geopolymer mixes.The best mix for immobilization were 99.98% in mix SF1[85%slag+15%Fly ash +0.5%Pb+2].
Helall, S., Ahmed, D. A., & Ragei, S. M. (2021). Effect of Pb+2 ion on physico chemical properties of fly ash -slag geopolymer pastes. Journal of Scientific Research in Science, 38(part 1 (Basic Sciences)), 118-138. doi: 10.21608/jsrs.2021.210660
MLA
S. Helall; Doaa A. Ahmed; Sheren M. Ragei. "Effect of Pb+2 ion on physico chemical properties of fly ash -slag geopolymer pastes". Journal of Scientific Research in Science, 38, part 1 (Basic Sciences), 2021, 118-138. doi: 10.21608/jsrs.2021.210660
HARVARD
Helall, S., Ahmed, D. A., Ragei, S. M. (2021). 'Effect of Pb+2 ion on physico chemical properties of fly ash -slag geopolymer pastes', Journal of Scientific Research in Science, 38(part 1 (Basic Sciences)), pp. 118-138. doi: 10.21608/jsrs.2021.210660
VANCOUVER
Helall, S., Ahmed, D. A., Ragei, S. M. Effect of Pb+2 ion on physico chemical properties of fly ash -slag geopolymer pastes. Journal of Scientific Research in Science, 2021; 38(part 1 (Basic Sciences)): 118-138. doi: 10.21608/jsrs.2021.210660
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