- Title
- Factors affecting the leaching behaviours of magnesium phosphate cement-stabilised/solidified Pb-contaminated soil, part 1: water-to-solid ratio and Pb concentration
- Creator
- Wang, Ping; Xue, Qiang; Li, Jiang-Shan; Zhang, Ting-Ting; Wang, Shan-Yong; Li, Zhen-Ze; Liu, Lei
- Relation
- International Journal of Environment and Pollution Vol. 63, Issue 1-2, p. 89-103
- Publisher Link
- http://dx.doi.org/10.1504/IJEP.2018.093027
- Publisher
- Inderscience Publishers
- Resource Type
- journal article
- Date
- 2018
- Description
- Magnesium phosphate cement (MPC) is widely used to effectively stabilise/solidify heavy-metal-contaminated soils, and leachability is the most important parameter for MPC-treated metal-contaminated soil. However, various factors in the stabilisation/solidification (S/S) process, such as the metal concentration in the soil and the water-to-solid (W/S) ratio of the S/S paste treated using MPC, can greatly affect the leaching behaviour of heavy metal in S/S monolith. The toxicity characteristic leaching procedure (TCLP) and semi-dynamic leaching tests were conducted to investigate the effects of metal concentrations and W/S ratios on the leaching behaviours of MPC treated Pb contaminated soil. Results showed that the Pb concentration and W/S ratios change the leaching behaviours and leaching mechanisms of MPC-treated Pb-contaminated soil and the optimum W/S ratio 0.50 was obtained when MPC was used to stabilise Pb contaminated soils.
- Subject
- stabilisation/solidification; leaching behaviour; water-to-solid ratio; magnesium phosphate cement; MPC
- Identifier
- http://hdl.handle.net/1959.13/1446450
- Identifier
- uon:42873
- Identifier
- ISSN:0957-4352
- Language
- eng
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