Meixia Gu, Xiaoshuang Yin, Xiaoning Feng, Nan Shi, Wei Zhu, Shuhai Guo, Min Li, Bo Wu, Gang Li, Xingshun Cong, Bin Lou, Fushan Wen, Dong Liu
{"title":"检验表面活性剂溶液对受污染土壤中石油的解吸效果和机理","authors":"Meixia Gu, Xiaoshuang Yin, Xiaoning Feng, Nan Shi, Wei Zhu, Shuhai Guo, Min Li, Bo Wu, Gang Li, Xingshun Cong, Bin Lou, Fushan Wen, Dong Liu","doi":"10.1007/s11368-024-03866-y","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>In order to investigate the desorption effect and mechanism of petroleum from petroleum contaminated soil (PCS) in surfactant solution (SAA-solution).</p><h3 data-test=\"abstract-sub-heading\">Method</h3><p>In this study, the desorption effect of SAA-solution cleaning of PCS was systematically analyzed by using orthogonal experiments. In addition, the petroleum mechanism of desorption from the PCS surface was further explored by kinetic and thermodynamic studies.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results indicated that the petroleum removal efficiency (Re) gradually decreased with the increase of PCS particle size and PCS aging time. The highest petroleum Re was 82.13% under optimum conditions. Subsequently, FT-IR and petroleum component analysis showed the petroleum light components were easily removed from PCS, while the petroleum heavy components limited the desorption of petroleum. The kinetic studies revealed that the petroleum desorption was well depicted by the pseudo-first-order kinetic model, and the desorption rate increased with the decrease of PCS particle size. Meanwhile, the petroleum desorption equilibrium was well described by the Langmuir isotherm model and proceeded by a chemical mechanism. The thermodynamic studies demonstrated that the petroleum desorption from PCS was a viable, spontaneous, and endothermic process.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The study provided theoretical guidance to apply SAA-solution cleaning industrial PCS.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"5 1","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Inspection for the desorption effect and mechanism of petroleum from contaminated soil in surfactant solution\",\"authors\":\"Meixia Gu, Xiaoshuang Yin, Xiaoning Feng, Nan Shi, Wei Zhu, Shuhai Guo, Min Li, Bo Wu, Gang Li, Xingshun Cong, Bin Lou, Fushan Wen, Dong Liu\",\"doi\":\"10.1007/s11368-024-03866-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Purpose</h3><p>In order to investigate the desorption effect and mechanism of petroleum from petroleum contaminated soil (PCS) in surfactant solution (SAA-solution).</p><h3 data-test=\\\"abstract-sub-heading\\\">Method</h3><p>In this study, the desorption effect of SAA-solution cleaning of PCS was systematically analyzed by using orthogonal experiments. 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Inspection for the desorption effect and mechanism of petroleum from contaminated soil in surfactant solution
Purpose
In order to investigate the desorption effect and mechanism of petroleum from petroleum contaminated soil (PCS) in surfactant solution (SAA-solution).
Method
In this study, the desorption effect of SAA-solution cleaning of PCS was systematically analyzed by using orthogonal experiments. In addition, the petroleum mechanism of desorption from the PCS surface was further explored by kinetic and thermodynamic studies.
Results
The results indicated that the petroleum removal efficiency (Re) gradually decreased with the increase of PCS particle size and PCS aging time. The highest petroleum Re was 82.13% under optimum conditions. Subsequently, FT-IR and petroleum component analysis showed the petroleum light components were easily removed from PCS, while the petroleum heavy components limited the desorption of petroleum. The kinetic studies revealed that the petroleum desorption was well depicted by the pseudo-first-order kinetic model, and the desorption rate increased with the decrease of PCS particle size. Meanwhile, the petroleum desorption equilibrium was well described by the Langmuir isotherm model and proceeded by a chemical mechanism. The thermodynamic studies demonstrated that the petroleum desorption from PCS was a viable, spontaneous, and endothermic process.
Conclusion
The study provided theoretical guidance to apply SAA-solution cleaning industrial PCS.
期刊介绍：
The Journal of Soils and Sediments (JSS) is devoted to soils and sediments; it deals with contaminated, intact and disturbed soils and sediments. JSS explores both the common aspects and the differences between these two environmental compartments. Inter-linkages at the catchment scale and with the Earth’s system (inter-compartment) are an important topic in JSS. The range of research coverage includes the effects of disturbances and contamination; research, strategies and technologies for prediction, prevention, and protection; identification and characterization; treatment, remediation and reuse; risk assessment and management; creation and implementation of quality standards; international regulation and legislation.
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