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Pozzolanic activity and environmental risk assessment of water-based drilling cuttings of shale gas

文献类型：期刊论文

作者Wang, Chao-qiang5,7; Chen, Shen6; Huang, De-ming7; Chen, Qiao4; Tu, Min-jie3; Wu, Kai2; Zhang, Zhao-ji1
刊名CONSTRUCTION AND BUILDING MATERIALS
出版日期2022-09-19
卷号348页码:16
ISSN号0950-0618
关键词WDC Pozzolanic activity Characteristic heavy metals Risk assessment
DOI10.1016/j.conbuildmat.2022.128657
通讯作者Chen, Qiao(chenqiao@cigit.ac.cn) ; Wu, Kai(wukai@tongji.edu.cn)
英文摘要In order to evaluate the application potential of water-based drilling cuttings (WDC) as cementitious materials for building material admixtures, the physical and chemical properties of WDC were studied, and the environmental risk and human health risk of heavy metals in WDC were also systematically studied. The results showed that the particle pitch diameter is 26.70 mu m, mineral types of WDC are mainly limestone, calcium hydroxide and quartz. The 28-day compressive strength of WDC is 27.6 MPa. The strength activity index of WDC cement mortar is 58.3 %, and the amorphous phase content is 23 %. At 80 degrees C, the weight loss rate and bound water content of WDC-CaO-H2O hydrate were 5 % and 0.13, respectively. It is found that WDC has certain pozzolanic activity, can not only participate in the secondary reaction of the system as active mineral admixtures, but also reduce harmful holes in the system by filling compaction. According to the calculation and analysis, only Hg reached moderate pollution in WDC, As and Cr had carcinogenic risks to human health, so Hg, As and Cr were used as characteristic heavy metal pollutants in WDC. As well as, under the analysis results of characteristic heavy metals and the limits of relevant standards, the risk control values of heavy metals in different exposure scenarios were obtained. The expected existence of arsenic ions, chromium ions and mercury ions in XPS spectra and their corresponding binding energy and orbital state were analyzed. After analysis and fitting, these values are basically consistent with the reference values cited in the document, and the resource utilization direction and environmental safety control measures of WDC were proposed. The above research results will further promote the basic technical support of shale gas WDC resource utilization, and ensure the ecological environment safety and human health safety in the process of resource utilization.
资助项目Science and technology research project of Chongqing Municipal Education Commission[KJQN202100723] ; Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education[20kfck03] ; Opening Project of Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences[KLUPC-KF-2020-2] ; Key Laboratory of Advanced Civil Engineering Materials (Tongji University) , Ministry of Education[202103] ; Chongqing Science and Technology Commission[cstc2017jcyjAX0157] ; Western Scholar of Chinese Academy of Sciences Category A[E2296201]
WOS研究方向Construction & Building Technology ; Engineering ; Materials Science
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000843008700003
源URL[http://119.78.100.138/handle/2HOD01W0/16463]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Chen, Qiao; Wu, Kai
作者单位1.Chinese Acad Sci, Key Lab Urban Pollutant Convers, Xiamen 361021, Peoples R China
2.Tongji Univ, Key Lab Adv Civil Engn Mat, Minist Educ, Shanghai 201804, Peoples R China
3.CSCEC Strait Construct & Dev Co ltd, Fuzhou 350015, Peoples R China
4.Chinese Acad Sci, Chongqing Inst Green Intelligent Technol, Chongqing 400714, Peoples R China
5.Chongqing Inst Modern Construct Ind Dev, Chongqing 400066, Peoples R China
6.Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing 400074, Peoples R China
7.Chongqing Jiaotong Univ, Sch Mat Sci & Engn, Chongqing 400074, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Chao-qiang,Chen, Shen,Huang, De-ming,et al. Pozzolanic activity and environmental risk assessment of water-based drilling cuttings of shale gas[J]. CONSTRUCTION AND BUILDING MATERIALS,2022,348:16.
APA Wang, Chao-qiang.,Chen, Shen.,Huang, De-ming.,Chen, Qiao.,Tu, Min-jie.,...&Zhang, Zhao-ji.(2022).Pozzolanic activity and environmental risk assessment of water-based drilling cuttings of shale gas.CONSTRUCTION AND BUILDING MATERIALS,348,16.
MLA Wang, Chao-qiang,et al."Pozzolanic activity and environmental risk assessment of water-based drilling cuttings of shale gas".CONSTRUCTION AND BUILDING MATERIALS 348(2022):16.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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