Innovative approach to enhancing phosphogypsum mechanical properties and stabilizing/solidifying contaminants
文献类型：期刊论文
| 作者 | Xiao, Lina2; Zhang, Jiaming2; Luo, Yi2; Qi, Xiaojian2; Hussain, Javid1,3,4,5; Jiang, Guosheng2 |
| 刊名 | SUSTAINABLE CHEMISTRY AND PHARMACY
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 41页码:13 |
| 关键词 | Phosphogypsum MICP RMC Water resistance Leaching concentration |
| DOI | 10.1016/j.scp.2024.101712 |
| 英文摘要 | This research aims to provide a novel solidification/stabilization technique that is both safe and environmentally beneficial, allowing for the use of significant amounts of phosphogypsum (PG) in the construction materials. The unconfined compressive strength (UCS), permeability coefficient, and water resistance of samples treated with microbial induced carbonate precipitation (MICP) and Reactive magnesium oxide cement (RMC), as well as samples treated with MICP and Fly ash (FA), were compared and examined. The optimum formulation of MICP-RMC and MICPFA stabilizing/solidifying PG samples were determined by orthogonal test. In contrast, the toxicity characteristic leaching procedure test (TCLP) was carried out on the PG samples treatment to evaluate the potential for pollution. The outcomes indicated that the efficacy of MICP-RMC in solidifying/stabilizing PG was better than that of MICP-FA in solidifying/stabilizing PG. At a dose of 80% PG, the UCS was able to achieve 3.2 MPa. The permeability coefficient is reduced by two orders of magnitude, the lowest is 5.578E-07 m/s, and the water resistance is significantly improved. RMC had the greatest influence on UCS and permeability coefficient. A large amount of calcium carbonate and brucite or hydromagnesite were observed in the solidified/stabilized samples by SEM, and these mineralized products played a leading role in UCS and permeability. The TCLP results of tests indicated that the leaching concentrations of hazardous components in the cemented PG samples complied with the national emission requirements. These results indicate that the suggested solidification/stabilization procedure employing MICP-RMC is a potential method for the ecologically friendly application of PG in construction. |
| 资助项目 | National Natural Science Foundation of China[42177166] ; Postdoctoral Fellowship Program of CPSF |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001284096100001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42161]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Jiaming |
| 作者单位 | 1.Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 2.China Univ Geosci Wuhan, Fac Engn, 388 Lumo Ave, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan |
| 推荐引用方式 GB/T 7714 | Xiao, Lina,Zhang, Jiaming,Luo, Yi,et al. Innovative approach to enhancing phosphogypsum mechanical properties and stabilizing/solidifying contaminants[J]. SUSTAINABLE CHEMISTRY AND PHARMACY,2024,41:13. |
| APA | Xiao, Lina,Zhang, Jiaming,Luo, Yi,Qi, Xiaojian,Hussain, Javid,&Jiang, Guosheng.(2024).Innovative approach to enhancing phosphogypsum mechanical properties and stabilizing/solidifying contaminants.SUSTAINABLE CHEMISTRY AND PHARMACY,41,13. |
| MLA | Xiao, Lina,et al."Innovative approach to enhancing phosphogypsum mechanical properties and stabilizing/solidifying contaminants".SUSTAINABLE CHEMISTRY AND PHARMACY 41(2024):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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