Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
582943 | Journal of Hazardous Materials | 2008 | 8 Pages |
Abstract
This paper investigated the effectiveness of (ground granulated blast furnace slag) GGBFS-added chemically bonded phosphate ceramic (CBPC) 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 HgCl2-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 μg/L to about 3 μg/L when treating HgCl2. Meanwhile, the main hydrating product of GGBFS-added matrices was still MgKPO4·6H2O. The improvement of S/S effectiveness was mainly due to physical filling of fine GGBFS particles and microencapsulation of chemical cementing gel.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
Zhongzhe Liu, Guangren Qian, Jizhi Zhou, Chuanhua Li, Yunfeng Xu, Zhe Qin,