城市垃圾焚烧飞灰中的重金属在盐酸中的浸出行为
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| Published in | 中国有色金属学报：英文版 Vol. 21; no. 6; pp. 1422 - 1427 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2011
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| Subjects | |
| Online Access | Get full text |
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| Bibliography: | The extraction behavior of heavy metals from municipal waste incineration （MWI） fly ash was investigated systematically. The extraction process includes two steps, namely, fly ash was firstly washed with water, and then subjected to hydrochloric acid leaching. The main parameters for water washing process were tested, and under the optimal conditions, about 86% Na, 70% K and 12% Ca were removed from fly ash, respectively. Hydrochloric acid was used for the extraction of valuable elements from the water-washed fly ash, and the optimal extraction was achieved for each heavy metal as follows： 86% for Pb, 98% for Zn, 82% for Fe, 96% for Cd, 62% for Cu, 80% for Al, respectively. And the main compositions of the finally obtained solid residue are Ca2PbO4, CaSi2Os, PbsSiO7, Ca3A12Si3012 and SiO2. 43-1239/TG HUANG Kai, Katsutoshi INOUE, Hiroyuki HARADA, Hidetaka KAWAKITA, Keisuke OHTO 1. Department of Nonferrous Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; 2. Department of Applied Chemistry, Saga University, Honjo 1, Saga 840-8502, Japan municipal waste incineration; fly ash; heavy metals; leaching; hydrochloric acid |
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| ISSN: | 1003-6326 |