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This study investigated the removal effectiveness and mechanism of mixed surfactant solutions composed of sodium dodecyl sulfate (SDS) and polyethylene glycol octylphenyl ether (TX100) on trichloroethylene (TCE) contamination through column and three-dimensional sand tank experiments, combined with electrical resistivity tomography (ERT). The column experiments revealed a significant synergistic effect of surfactant concentration and mixing ratio on TCE removal. When the mixing ratio α was 0.9, all tested concentrations exhibited optimal removal performance, with the 3.0g/L solution showing the highest resistivity change percentage (91.37%), followed by 1.5g/L (87.07%) and 0.5g/L (81.25%). Resistivity monitoring indicated that most TCE removal occurred during the first pore volume (pv) of surfactant injection, after which the resistivity stabilized, suggesting the completion of the removal process. In the sand tank experiments, the resistivity difference in the TCE-contaminated region increased from an initial value of approximately 60 Ω·m to 120~140 Ω·m during TCE injection, reflecting the accumulation of contaminants. After water injection, the resistivity difference decreased to 30~60 Ω·m with a localized rebound to 80~140 Ω·m, indicating dilution and redistribution of the contaminant. Following the injection of the mixed surfactant solution (3.0g/L, α = 0.9), the resistivity difference in the contaminated area significantly decreased to the initial range (approximately 20~60 Ω·m), demonstrating a remarkable removal effect. ERT effectively visualized the contaminant removal process in real time, revealing spatial distribution changes of TCE across different depths and cross-sections. This non-invasive, real-time, and three-dimensional monitoring approach highlights the unique advantages of ERT in tracking and evaluating contaminant remediation processes.

, authors=Zhi-Fei ZENG, Wen-Han CAO, Han-Le LIU*, authorsList=Zhi-Fei ZENG, Wen-Han CAO, Han-Le LIU, authorCompany=null, correspAuthors=Han-Le LIU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917803841380406, articleId=1314917803367424052, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=复配表面活性剂对DNAPL污染物去除过程的三维电阻率成像, columnId=1234106386565624579, journalTitle=中国环境科学, columnName=水污染与控制, runingTitle=null, highlight=null, articleAbstract=

通过砂柱与三维砂槽实验,结合电阻率成像(ERT),探讨复配表面活性剂溶液(十二烷基硫酸钠和聚乙二醇辛基苯基醚)对TCE污染的去除效果与机制.砂柱实验表明,复配表面活性剂溶液的浓度与配比对TCE的去除表现出显著的协同效应.当复配比α为0.9时,各浓度混合溶液均表现出最佳的去除效果,其中3.0g/L溶液的电阻率变化百分比最高,达到91.37%,其次为1.5g/L(87.07%)和0.5g/L(81.25%).电阻率监测显示,TCE的去除主要集中在溶液注入的第1pv内,此后电阻率趋于平稳,污染物去除过程基本完成.砂槽实验显示,TCE污染区域电阻率差值由初值约60Ω·m升至120~140Ω·m,电阻率差值的变化反映了TCE注入过程中污染物含量的增加;水流注入后,电阻率差值降至30~60Ω·m并局部回升至80~140Ω·m,反映污染物的稀释与重分布.注入复配表面活性剂(3.0g/L,α=0.9)后,污染区域电阻率差值显著降低至初始电阻率差值范围(约20~60Ω·m),去除效果显著.ERT直观揭示了污染物的去除过程,能够实时动态地呈现出污染物在不同纵深和剖面位置的空间分布变化,为污染治理过程提供了可视化、非破坏性、实时性的三维监测手段,展现出其独特的优势.

, authors=曾志飞, 曹文翰, 刘汉乐*, authorsList=曾志飞, 曹文翰, 刘汉乐, authorCompany=null, correspAuthors=刘汉乐, authorNote=

曾志飞(1998-),男,云南大理人,桂林理工大学硕士研究生,主要研究方向为DNAPL 去除过程电阻率成像.发表论文1篇..

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曾志飞(1998-),男,云南大理人,桂林理工大学硕士研究生,主要研究方向为DNAPL 去除过程电阻率成像.发表论文1篇..

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曾志飞(1998-),男,云南大理人,桂林理工大学硕士研究生,主要研究方向为DNAPL 去除过程电阻率成像.发表论文1篇..

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复配表面活性剂对DNAPL污染物去除过程的三维电阻率成像
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曾志飞 , 曹文翰 , 刘汉乐 *
中国环境科学 | 水污染与控制 2025,45(9): 4935-4944
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中国环境科学 |水污染与控制 2025 , 45 (9) : 4935 -4944
复配表面活性剂对DNAPL污染物去除过程的三维电阻率成像
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曾志飞 , 曹文翰, 刘汉乐*
作者信息
  • 桂林理工大学,广西环境污染控制理论与技术重点实验室,流域保护与绿色发展广西高校工程研究中心,广西 桂林 541006
通讯作者:
* 责任作者,教授,
作者简介:

曾志飞(1998-),男,云南大理人,桂林理工大学硕士研究生,主要研究方向为DNAPL 去除过程电阻率成像.发表论文1篇..

Three-dimensional electrical resistivity tomography of DNAPL contaminant removal by mixed surfactants
Zhi-Fei ZENG , Wen-Han CAO, Han-Le LIU*
Affiliations
  • Guangxi Key Laboratory of Environmental Contaminant Control Theory and Technology, Engineering Research Center of Watershed Protection and Green Development, University of Guangxi, Guilin University of Technology, Guilin 541006, China
出版时间: 2025-09-20
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通过砂柱与三维砂槽实验,结合电阻率成像(ERT),探讨复配表面活性剂溶液(十二烷基硫酸钠和聚乙二醇辛基苯基醚)对TCE污染的去除效果与机制.砂柱实验表明,复配表面活性剂溶液的浓度与配比对TCE的去除表现出显著的协同效应.当复配比α为0.9时,各浓度混合溶液均表现出最佳的去除效果,其中3.0g/L溶液的电阻率变化百分比最高,达到91.37%,其次为1.5g/L(87.07%)和0.5g/L(81.25%).电阻率监测显示,TCE的去除主要集中在溶液注入的第1pv内,此后电阻率趋于平稳,污染物去除过程基本完成.砂槽实验显示,TCE污染区域电阻率差值由初值约60Ω·m升至120~140Ω·m,电阻率差值的变化反映了TCE注入过程中污染物含量的增加;水流注入后,电阻率差值降至30~60Ω·m并局部回升至80~140Ω·m,反映污染物的稀释与重分布.注入复配表面活性剂(3.0g/L,α=0.9)后,污染区域电阻率差值显著降低至初始电阻率差值范围(约20~60Ω·m),去除效果显著.ERT直观揭示了污染物的去除过程,能够实时动态地呈现出污染物在不同纵深和剖面位置的空间分布变化,为污染治理过程提供了可视化、非破坏性、实时性的三维监测手段,展现出其独特的优势.

复配表面活性剂  /  重非水相液体  /  电阻率成像  /  去除效果

This study investigated the removal effectiveness and mechanism of mixed surfactant solutions composed of sodium dodecyl sulfate (SDS) and polyethylene glycol octylphenyl ether (TX100) on trichloroethylene (TCE) contamination through column and three-dimensional sand tank experiments, combined with electrical resistivity tomography (ERT). The column experiments revealed a significant synergistic effect of surfactant concentration and mixing ratio on TCE removal. When the mixing ratio α was 0.9, all tested concentrations exhibited optimal removal performance, with the 3.0g/L solution showing the highest resistivity change percentage (91.37%), followed by 1.5g/L (87.07%) and 0.5g/L (81.25%). Resistivity monitoring indicated that most TCE removal occurred during the first pore volume (pv) of surfactant injection, after which the resistivity stabilized, suggesting the completion of the removal process. In the sand tank experiments, the resistivity difference in the TCE-contaminated region increased from an initial value of approximately 60 Ω·m to 120~140 Ω·m during TCE injection, reflecting the accumulation of contaminants. After water injection, the resistivity difference decreased to 30~60 Ω·m with a localized rebound to 80~140 Ω·m, indicating dilution and redistribution of the contaminant. Following the injection of the mixed surfactant solution (3.0g/L, α = 0.9), the resistivity difference in the contaminated area significantly decreased to the initial range (approximately 20~60 Ω·m), demonstrating a remarkable removal effect. ERT effectively visualized the contaminant removal process in real time, revealing spatial distribution changes of TCE across different depths and cross-sections. This non-invasive, real-time, and three-dimensional monitoring approach highlights the unique advantages of ERT in tracking and evaluating contaminant remediation processes.

mixed surfactant  /  DNAPL  /  electrical resistivity tomography  /  removal effects
曾志飞, 曹文翰, 刘汉乐. 复配表面活性剂对DNAPL污染物去除过程的三维电阻率成像. 中国环境科学, 2025 , 45 (9) : 4935 -4944 .
Zhi-Fei ZENG, Wen-Han CAO, Han-Le LIU. Three-dimensional electrical resistivity tomography of DNAPL contaminant removal by mixed surfactants[J]. China Environmental Science, 2025 , 45 (9) : 4935 -4944 .
  • 国家自然科学基金资助项目(42277192)
  • 第三期广西高等学校千名中青年骨干教师培养计划
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  • 接收时间:2025-01-21
  • 首发时间:2026-10-08
  • 出版时间:2025-09-20
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  • 收稿日期:2025-01-21
基金
国家自然科学基金资助项目(42277192)
第三期广西高等学校千名中青年骨干教师培养计划
作者信息
    桂林理工大学,广西环境污染控制理论与技术重点实验室,流域保护与绿色发展广西高校工程研究中心,广西 桂林 541006

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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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