Physicochemical and pozzolanic properties of municipal solid waste incineration fly ash with different pretreatments
文献类型：期刊论文
| 作者 | Chen, Zhen3,4; Li, Jiang-Shan3,4; Poon, Chi-Sun1,4; Jiang, Wen-Hao3,4,5; Ma, Zi-Han1,4; Chen, Xin3,4,5; Lu, Jian-Xin1; Dong, Hao-Xin2,3 |
| 刊名 | WASTE MANAGEMENT
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 160期号:-页码:146 |
| 关键词 | MSWI fly ash Pretreatment Chloride Sulfate Leaching Pozzolanic activity |
| ISSN号 | 0956-053X |
| 英文摘要 | Swelling caused by gas generated from municipal solid waste incineration fly ash (MSWIFA) when it is mixed with alkali limits its uses. Besides, the leaching of anion salts , heavy metals contained in MSWIFA poses a high risk to environment. This study presents the feasibility of a one-step alkaline washing, one-step thermal quenching and two-step combination of alkaline washing and thermal quenching pretreatment methods in altering the key properties of MSWIFA for promoting its reusability. It was found that apart from H2(gas), NH3(gas) was also generated during the alkaline washing of the MSWIFA. Besides, pretreatments led to the reduction in particle size, the increase in pore volume and specific surface area of the MSWIFA, as well as the removal of chloride and sulfate anions. All the pretreatment methods were effective in reducing leaching of heavy metals to below levels of nonhazardous waste except Cd and Pb with alkaline washing. Furthermore, both the chemical Frattini test and the mechanical activity index test showed improvement in pozzolanic activities of the MSWIFA after the pretreatments. Overall, the combined pretreatment method was most effective in elimi-nating gas emission , reducing leaching of metal ions and anions from the ash, while enhancing the pozzo-lanic activity of the ash. |
| 学科主题 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000946106200001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35462]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China 2.School of Civil Engineering, Liaoning Technical University, Fuxin 123000, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 4.RSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Wuhan 430071, China 5.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Chen, Zhen,Li, Jiang-Shan,Poon, Chi-Sun,et al. Physicochemical and pozzolanic properties of municipal solid waste incineration fly ash with different pretreatments[J]. WASTE MANAGEMENT,2023,160(-):146. |
| APA | Chen, Zhen.,Li, Jiang-Shan.,Poon, Chi-Sun.,Jiang, Wen-Hao.,Ma, Zi-Han.,...&Dong, Hao-Xin.(2023).Physicochemical and pozzolanic properties of municipal solid waste incineration fly ash with different pretreatments.WASTE MANAGEMENT,160(-),146. |
| MLA | Chen, Zhen,et al."Physicochemical and pozzolanic properties of municipal solid waste incineration fly ash with different pretreatments".WASTE MANAGEMENT 160.-(2023):146. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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