Solidification/stabilization and leaching behavior of PbCl2 in fly-ash hydrated silicate matrix and fly-ash geopolymer matrix
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- 作者：Yang Li ; Xingbao Gao ; Qi Wang ; Jie He…
- 关键词：Fly ash ; Construction material ; Hydrated silicate ; Geopolymer ; Lead ; Leaching ; Solidification/stabilization
- 刊名：Environmental Science and Pollution Research
- 出版年：2015
- 出版时间：May 2015
- 年：2015
- 卷：22
- 期：9
- 页码：6877-6885
- 全文大小：1,672 KB
- 参考文献：álvarez-Ayuso E, Querol X, Plana F, Alastuey A, Moreno N, Izquierdo M, Font O, Moreno T, Diez S, Vázquez E, Barra M (2008) Environmental, physical and structural characterisation of geopolymer matrixes synthesised from coal (co-)combustion fly ashes. J Hazard Mater 154:175-83. doi:10.-016/?j.?jhazmat.-007.-0.-08 View Article
Arya C, Xu Y (1995) Effect of cement type on chloride binding and corrosion of steel in concrete. Cem Concr Res 25:893-02View Article
Banfalvi G, Sarvari A, Nagy G (2012) Chromatin changes induced by Pb and Cd in human cells. Toxicol In Vitro 26:1064-071. doi:10.-016/?j.?tiv.-012.-3.-16 View Article
Buchwald A, Hilbig H, Kapps C (2007) Alkali-activated metakaolin-slag blends—performance and structure in dependence on their composition. J Mater Sci 42:3024-032. doi:10.-007/?s10853-006-0525-6 View Article
Chen QY, Tyrer M, Hills CD, Yang XM, Carey P (2009) Immobilisation of heavy metal in cement-based solidification stabilisation a review. Waste Manag 29:390-03. doi:10.-016/?j.?wasman.-008.-1.-19 View Article
China Bricks & Tiles Industrial Association (2011) The 12th five-year plan from China Bricks & Tiles Industrial Association. http://?www.?cbtia.?com/?news/-012/--22/?H14910705.?shtml . Accessed May 2012 (In Chinses)
China Building Materials Federation (2012) Statistical analysis report of cement output and productivity in 2011. China Cem 3:10-2 (In Chinses)
Chindaprasirt P, Jaturapitakkul C, Chalee W, Rattanasak U (2009) Comparative study on the characteristics of fly ash and bottom ash geopolymers. Waste Manag 29:539-43. doi:10.-016/?j.?wasman.-008.-6.-23 View Article
Cocke DL (1990) The binding chemistry and leaching mechanisms of hazardous substances in cementitious solidification/stabilization systems. J Hazard Mater 24:231-53View Article
De Silva P, Sagoe-Crenstil K (2008) Medium-term phase stability of Na2O–Al2O3–SiO2–H2O geopolymer systems. Cem Concr Res 38:870-76. doi:10.-016/?j.?cemconres.-007.-0.-03 View Article
Duxson P, Provis JL, Lukey GC, Van Deventer JJS (2007) The role of inorganic polymer technology in the development of ‘Green concrete- Cem Concr Res 37:1590-597. doi:10.-016/?j.?cemconres.-007.-8.-18 View Article
Gollmann MAC, Da Silva MM, Masuero NB, Dos Santos JOHZ (2010) Stabilization and solidification of Pb in cement matrices. J Hazard Mater 179:507-14. doi:10.-016/?j.?jhazmat.-010.-3.-32 View Article
Guo X, Shi H, Dick WA (2010) Compressive strength and microstructural characteristics of class C fly ash geopolymer. Cem Concr Compos 32:142-47. doi:10.-016/?j.?cemconcomp.-009.-1.-03 View Article
Hanjitsuwan S, Hunpratub S, Thongbai P, Maensiri S, Sata V, Chindaprasirt P (2014) Effects of NaOH concentrations on physical and electrical properties of high calcium fly ash geopolymer paste. Cem Concr Compos 45:9-4. doi:10.-016/?j.?cemconcomp.-013.-9.-12 View Article
Hwan-Young K, Jeong-Guk K, In-Tae K, Hwan-Seo P (2009) Study on the leaching behavior of salt waste forms prepared by using zeolite and lime glass. J Ind Eng Chem 15:293-98. doi:10.-016/?j.?jiec.-008.-1.-09 View Article
Izquierdo M, Querol X, Davidovits J, Antenucci D, Nugteren H, Fernández-Pereira C (2009) Coal fly ash-slag-based geopolymers: microstructure and metal leaching. J Hazard Mater 166:561-66. doi:10.-016/?j.?jhazmat.-008.-1.-63 View Article
Janusa MA, Champagne CA, Fanguy JC, Heard GE, Laine PL, Landry AA (2000) Solidification/stabilization of lead with the aid of bagasse as an additive to Portland cement. Microchem J 65:255-59View Article
Jianguo Z, John LP, Dingwu F, Jannie SJVD (2008) Geopolymers for immobilization of Cr6+, Cd2+, and Pb2+. J Hazard Mater 157:587-98. doi:10.-016/?j.?jhazmat.-008.-1.-53 View Article
Josef-Christian B, Karsten S, Lars R (2011) Nanocrystalline sodalite grown from superalkaline NaCl bearing gels at low temperature (333?K) and the influence of TEA on crystallization process. Microporous Mesoporous Mater 142:666-71. doi:10.-016/?j.?micromeso.-011.-1.-20 View Article
Lancellotti I, Kamseu E, Michelazzi M, Barbieri L, Corradi A, Leonelli C (2010) Chemical stability of geopolymers containing municipal solid waste incinerator fly ash. Waste Manag 30:673-79. doi:10.-016/?j.?wasman.-009.-9.-32 View Article
Lee D (2006) Effect of calcite on Pb-doped solidified waste forms in leaching. Chemosphere 63:1903-911. doi:10.-016/?j.?chemosphere.-005.-0.-18 View Article
Lee J, Freeman JL (2014) Zebrafish as a model for investigating developmental lead (Pb) neurotoxicity as a risk factor in adult neurodegenerative disease: a mini-review. Neurotoxicology. doi:10.-016/?j.?neuro.-014.-3.-08
Lin SL, Cross WH, Chian ESK, Lai JS, Giabbai M, Hung CH (1996) Stabilization and solidification of lead in contaminated soils. J Hazard Mater 48:95-10View Article
Lloyd RR, Provis JL, Van Deventer JJS (2009) Microscopy an - 作者单位：Yang Li (1) (2)
Xingbao Gao (1)
Qi Wang (1) (2)
Jie He (1)
Dahai Yan (1)
1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
2. College of Water Sciences, Beijing Normal University, Beijing, 100875, China - 刊物类别：Earth and Environmental Science
- 刊物主题：Environment
Environment
Atmospheric Protection, Air Quality Control and Air Pollution
Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
Industrial Pollution Prevention - 出版者：Springer Berlin / Heidelberg
- ISSN：1614-7499
文摘
Fly ash (FA) for reuse as a construction material is activated using two methods, to produce hydrated silicate and geopolymer gels. We investigated the solidification/stabilization and leaching behavior of PbCl2 in a geopolymer matrix (GM) and hydrated silicate matrix (HSM), based on FA as the source material, to evaluate the environmental and health risks. The GM and HSM synthetic conditions were 60?°C, 20?% relative humidity (RH), and 12?wt% (6?mol/L) NaOH, and 20?±-?°C, ?0?% RH, and 30?wt.%, respectively, based on their compressive strength performances. X-ray diffraction (XRD) showed that Pb participated in hydration and geopolymerization, and was incorporated in the structural components of the hydrated silicate and geopolymer. In leaching experiments, the solidification/stabilization effects of Pb and Cl in the HSM and GM improved with increasing curing time. After long-term curing (28?days), the immobility of Pb in the GM was better than that in the HSM. Sodalite improved the Cl-stabilizing ability of the GM compared with that of the HSM. In static monolithic leaching experiments, HSM and GM had the same Pb-leaching behaviors. Based on the changes in the location of the neutral sphere layer with decreasing acid-neutralizing capacity, Pb release was divided into alkaline-release, stagnation, and acid-release stages. The neutral sphere layer contained the highest Pb concentration during permeation toward the block center from the block edge. This behavior regulation could also apply to other amphoteric metals immobilized by GMs and HSMs.