Effect of an acetic acid/sodium acetate buffered leachant on ettringite-based stabilizing matrices

被引：2

作者：

Cioffi, R

Santoro, L

机构：

[1] Univ Naples Federico II, Dipartimento Chim, I-80134 Naples, Italy

[2] Univ Basilicata, Dipartimento Ingn & Fis Ambiente, I-85100 Potenza, Italy

来源：

ENVIRONMENTAL TECHNOLOGY | 2000年 / 21卷 / 07期

关键词：

waste stabilization; leaching; heavy metals; ettringite;

D O I：

10.1080/09593330.2000.9618968

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of a pH 4.74 buffered acetic acid/sodium acetate leaching solution has been studied with regard to a novel stabilizing matrix based on calcium trisulphoaluminate and silicate hydrates. The matrix was doped with soluble nitrates of lead and copper and the study was carried out by means of Fourier transform infrared spectroscopy, differential thermal analysis and X-ray diffraction analysis. It has been found that the leaching medium had a strong effect on solidified samples, as the degree of polymerization of calcium silicate hydrate increases and calcium trisulphoaluminate hydrate decomposes giving off gypsum.

引用

页码：815 / 818

页数：4

共 17 条

[11] LEACHING EFFECTS ON SILICATE POLYMERIZATION - AN FTIR AND SI-29 NMR-STUDY OF LEAD AND ZINC IN PORTLAND-CEMENT [J].