Improvement of ground granulated blast furnace slag on stabilization/solidification of simulated mercury-doped wastes in chemically bonded phosphate ceramics

被引：52

作者：

Liu, Zhongzhe ^{[1
]}

Qian, Guangren ^{[1
]}

Zhou, Jizhi ^{[1
]}

Li, Chuanhua ^{[1
]}

Xu, Yunfeng ^{[1
]}

Qin, Zhe ^{[1
]}

机构：

[1] Shanghai Univ, Sch Environm Engn, Shanghai 200072, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 157卷 / 01期

关键词：

mercury-doped wastes; stabilization/solidification; ground granulated blast furnace slag; chemically bonded phosphate ceramics;

D O I：

10.1016/j.jhazmat.2007.12.110

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 [工学]; 0830 [环境科学与工程];

摘要：

This paper investigated the effectiveness of (ground granulated blast furnace slag) GGBFS-added chemically bonded phosphate ceramic (CBPQ matrix on the stabilization/solidification (S/S) of mercury chloride and simulated mercury-bearing light bulbs (SMLB). The results showed that the maximal compressive strength was achieved when 15% and 10% ground GGBFS was added for H902-doped and SMLB-doped CBPC matrices, respectively. The S/S performances of GGBFS-added matrices were significantly better than non-additive matrices. As pore size was reduced, the leaching concentration of Hg2+ from GGBFS-added CBPC matrix could be reduced from 697 lig/L to about 3 Lg/L when treating HgCli. Meanwhile, the main hydrating product of GGBFS-added matrices was still MgKP04.6H,O. The improvement of S/S effectiveness was mainly due to physical filling of fine GGBFS particles and microencapsulation of chemical cementing gel. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：146 / 153

页数：8

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