Changes of lead silicate glasses induced by leaching

Etching behavior of Pb ion from PbO-B2O3-SiO2 glasses in HNO3 solution

“…The composition of glass used in previous studies [6][7][8] (PbO-SiO 2 -BaO-ZrO 2 ) is different from that of our system (PbO-B 2 O 3 -SiO 2 -TiO 2 ), which was etched for a short time of less than one hour, for considering the PDP application. In this work, bulk glasses rather than sintered glass matrix composites were used as the target materials for etching; this was done to reduce experimental errors arising from the microstructure characteristics of sintered glass matrix composites, such as porosity, the interface between matrix and fillers, and the heterogeneous phase of fillers.…”

“…Some studies have reported the etching of lead silicate glasses in acid solutions, such as PbO-SiO 2 glasses in a HNO 3 solution [5] and PbO-SiO 2 -alkali oxides in a H 2 SO 4 solution [6]; however, these studies have been limited to a simple glass system, or to binary or ternary oxide glass systems. Recently, structural and quantitative analyses have been reported for PbO-SiO 2 -BaO-ZrO 2 glasses after leaching in a HNO 3 or CH 3 COOH solution [6][7][8]. These analyses have suggested that a silicon-rich region, in the form of a Si-O-Si gel structure, can be produced as a result of extensive etching, depending on etching conditions.…”

Leaching behavior of CRT funnel glass

“…The corrosion of Pb-containing glass by acid has been extensively studied [2,[6][7][8][9][10][11][12][13][14][15][16][17] since lead crystal glass is often used for tableware and the dissolution of Pb is harmful. The results of pre- vious studies show that Pb is preferentially dissolved into acid solution from glass and that the time dependence of the dissolution indicates a diffusion-controlled mechanism in the first stage.…”

Detoxification effect of chlorination procedure on waste lead glass

“…Previous studies focused on the enhanced leaching of lead silicate glasses so as to improve the lead extraction efficiency by breaking the glass's structure [7][8][9][10][11][12]. Furthermore, various utilizations of the CRT glasses were studied at the same time.…”