Application of washed MSWI fly ash in cement composites: long-term environmental impacts

Yang, Zhenzhou1,2; Tian, Sicong3,4; Liu, Lili1,2; Wang, Xidong1,2; Zhang, Zuotai3,5

2018-04

10.1007/s11356-017-1181-x

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH   影响因子和分区

0944-1344

1614-7499

In the present study, long-term environmental impacts of compact and ground cement composites, in which 30 wt.% of cement was replaced by washed municipal solid wastes incineration (MSWI) fly ash, were investigated for use in building industry. Consecutive leaching tests over a time span of 180 days were performed in acid water, deionized water, and saline water, respectively, with the accumulative concentration of different elements determined in the leachate. Different leaching behaviors are observed among different potential toxic elements (PTEs). For instance, higher concentrations of V in the leachate were observed from the compact cement composites than those from the ground ones. The concentration of Ba in the leachate increased with the decrease of particle size of the cement composites, and an initial increase in the leaching efficiency of Sn was followed by a clear decline with the leaching time. In addition, kinetic study revealed that the leaching behaviors of potential toxic elements follow a second-order model. The results demonstrated that the addition of washed MSWI fly ash into cement can contribute to the attrition resistance, indicating that the washed MSWI fly ash could be a promising alternative for cement as supplementary building materials.

Washed MSWI fly ash Long-term leaching Potential toxic element Kinetic study

SCI

英语

通讯

Shenzhen Science and Technology Innovation Committee[ZDSYS201602261932201]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000431790000086

SPRINGER HEIDELBERG

ENVIRONMENT/ECOLOGY

Web of Science

1.Peking Univ, Coll Engn, Beijing Key Lab Solid Waste Utilizat & Management, Beijing 100871, Peoples R China
2.Peking Univ, Coll Engn, Dept Energy & Resource Engn, Beijing 100871, Peoples R China
3.Southern Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
4.Macquarie Univ, Dept Engn, Sydney, NSW 2109, Australia
5.Key Lab Municipal Solid Waste Recycling Technol &, Shenzhen 518055, Peoples R China

Yang, Zhenzhou,Tian, Sicong,Liu, Lili,et al. Application of washed MSWI fly ash in cement composites: long-term environmental impacts[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(12):12127-12138.

Yang, Zhenzhou,Tian, Sicong,Liu, Lili,Wang, Xidong,&Zhang, Zuotai.(2018).Application of washed MSWI fly ash in cement composites: long-term environmental impacts.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(12),12127-12138.

Yang, Zhenzhou,et al."Application of washed MSWI fly ash in cement composites: long-term environmental impacts".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.12(2018):12127-12138.