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- W2947547719 endingPage "103337" @default.
- W2947547719 startingPage "103337" @default.
- W2947547719 abstract "A huge volume of waste cathode-ray tube (CRT) glass (containing a large content of PbO) is generated annually. In this study, evaluation of lead leaching in waste CRT glass within cement-based materials is addressed, and the role of graphene oxide (GO) in inhibiting lead leaching is studied. Lead leaching was evaluated using the toxicity characteristic leaching procedure (TCLP) and electrochemical impedance spectroscopy (EIS), and the microstructure was also characterized with scanning electron microscopy (SEM). The TCLP results indicated that Pb leaching of waste CRT mortar with GO addition was significantly controlled below the regulatory limit (5 mg/L) specified by United States Environmental Protection Agency (USEPA) and the Chinese Standard. A novel circuit model R0(Q1W(Q2R1)(Q3R2)) was successfully applied to evaluate the transport of lead in GO-waste CRT mortar by using EIS. The electrochemical parameters revealed that the microstructure of the bulk cover and waste CRT-mortar interface was improved by adding GO, indicating that lead transfer within the bulk cover and waste CRT-mortar interface was inhibited. Better attachment between waste CRT glass/bulk paste and higher density hardened structure with 0.1 wt% GO were observed in SEM images, indicating that the hardened structure can effectively encapsulate lead ions out of waste CRT glass in the interface and bulk paste." @default.
- W2947547719 created "2019-06-07" @default.
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- W2947547719 date "2019-11-01" @default.
- W2947547719 modified "2023-10-09" @default.
- W2947547719 title "Evaluation of the inhibiting effect of graphene oxide on lead leaching from waste cathode-ray tube glass incorporated in cement mortar" @default.
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- W2947547719 doi "https://doi.org/10.1016/j.cemconcomp.2019.103337" @default.
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