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Dos Santos AV, Simonelli G, Dos Santos LCL. Review of the application of surfactants in microemulsion systems for remediation of petroleum contaminated soil and sediments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:32168-32183. [PMID: 36725801 DOI: 10.1007/s11356-023-25622-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Microemulsions are important for soil and sediment remediation technology. The characteristics of the surfactants that make up these microemulsions include low sorption into soil or sediments, low surface and interfacial tension, the ability to penetrate tiny pores, and good solubilization of contaminants. This review revealed that microemulsions formulated with nonionic and anionic surfactants have higher recovery efficiencies for hydrophobic contaminants than cationic ones, as evidenced by the surveyed studies reporting effective remediation of soils and sediments using on microemulsions. These microemulsified systems have been found to remove petroleum and its derivatives from soil or sediments at percentages ranging from 40 to 100%. As such, this review can aid with the choice of surfactants used in microemulsions for remediation, such as those with plant-based components, which are promising solutions for the remediation of contaminated soils due to their contaminant extraction efficiency and biodegradability.
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Affiliation(s)
- Adriana Vieira Dos Santos
- Oil, Gas, and Biofuels Research Group, Postgraduate Program of Chemical Engineering, Polytechnic School, Federal University of Bahia (UFBA), Salvador, BA, Brazil.
- Postgraduate Program in Geochemistry: Petroleum and Environment, Institute of Geoscience, Federal University of Bahia (UFBA), Salvador, BA, Brazil.
- Federal Institute of Education, Science and Technology of Bahia (IFBA), Energy Advanced Research and Study Group (GEPAE), Campus Lauro de Freitas, BA, Lauro de Freitas, Brazil.
| | - George Simonelli
- Oil, Gas, and Biofuels Research Group, Postgraduate Program of Chemical Engineering, Polytechnic School, Federal University of Bahia (UFBA), Salvador, BA, Brazil
| | - Luiz Carlos Lobato Dos Santos
- Oil, Gas, and Biofuels Research Group, Postgraduate Program of Chemical Engineering, Polytechnic School, Federal University of Bahia (UFBA), Salvador, BA, Brazil
- Postgraduate Program in Geochemistry: Petroleum and Environment, Institute of Geoscience, Federal University of Bahia (UFBA), Salvador, BA, Brazil
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Hassanshahi N, Hu G, Lee K, Li J. Effect of ultrasonic homogenization on crude oil-water emulsion stability. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2023; 58:211-221. [PMID: 36803402 DOI: 10.1080/10934529.2023.2178788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 06/18/2023]
Abstract
This research aims to evaluate the effect of ultrasonic processing parameters (power and sonication time), emulsion characteristics (water salinity and pH) and their interaction on oil-in-water emulsion stability for Cold Lake Blend (CLB) crude oil. Response surface methodology was used to design experimental runs, in which the parameters were investigated at five levels. Emulsion stability was evaluated by measuring creaming index, emulsion turbidity and microscopic image analysis. The effect of crude oil condition (fresh and weathered) on the emulsion stability was also investigated at the optimum sonication parameters and emulsion characteristics. The optimum condition was found at a power level of 76-80 W, sonication time of 16 mins, water salinity of 15 g/L NaCl, and pH of 8.3. Increasing sonication time beyond the optimum value had adverse effect on the emulsion stability. High water salinity (> 20 g/L NaCl) and pH (> 9) decreased the emulsion stability. These adverse effects intensified at higher power levels (> 80-87 W) and longer sonication times (> 16 mins). Interaction of parameters showed that the required energy to generate stable emulsion was within 60 - 70 kJ. Emulsion with fresh crude oil was more stable than those generated with the weathered oil.
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Affiliation(s)
- Nahid Hassanshahi
- Environmental Engineering Program, University of Northern British Columbia, Prince George, British Columbia, Canada
| | - Guangji Hu
- School of Engineering, University of British Columbia, Kelowna, British Columbia, Canada
| | - Kenneth Lee
- Ecosystem Science, Fisheries and Oceans Canada, Ottawa, ON, Canada
| | - Jianbing Li
- Environmental Engineering Program, University of Northern British Columbia, Prince George, British Columbia, Canada
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Remediation of oily soil using acidic sophorolipids micro-emulsion. Chin J Chem Eng 2023. [DOI: 10.1016/j.cjche.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Jiang G, Li J, Yu J, Jiang H, Li H, Xu B, Zhao L, Wang H. Research on the influencing factors and mechanism of single-phase microemulsion cleaning of shale gas oil-based cuttings. ENVIRONMENTAL TECHNOLOGY 2022; 43:2530-2539. [PMID: 33522890 DOI: 10.1080/09593330.2021.1884902] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
Oil-based cuttings (OBCs) produced by shale gas exploitation are classified as hazardous waste. Their appropriate utilization and disposal is a key issue that urgently needs to be resolved. A single-phase microemulsion (SPM) has ultra-low interfacial tension and strong solubilization ability. In view of this, based on an analysis of the characteristics of OBCs, SPMs have been selected for their cleaning. The effects of microemulsion components and other conditions on the cleaning efficacy have been explored, as well as the deoiling mechanism and the recycling efficiency of the SPM. Our results have shown that sodium dodecylbenzene sulfonate (SDBS), n-butanol, water, and white oil in appropriate proportions can form an effective SPM. The oil content (OC) of OBCs after cleaning was reduced from 11.89% (±0.32%) to 1.13% (±0.02%) when the proportions of the aforementioned components of the SPM were 14.3%, 14.3%, 66.6%, and 4.8%, respectively. The OC of the residue further decreased to 0.28% (±0.05%) after a second cleaning with an alkaline solution. The optimum SPM conditions for cleaning OBCs were identified as a stirring speed of 200 rpm, a temperature of 30 °C, a cleaning time of 30 min, and a solid to liquid mass to volume ratio of 1:4. The main mechanism whereby the SPM cleans the OBCs is that the former reduces the combined work and adhesion work required for the removal of oil droplets from the cuttings, so that the adhesive oil is easily gathered up. Furthermore, the gathered oil phase is solubilized by the SPM.
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Affiliation(s)
- Guobin Jiang
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Jing Li
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
| | - Jinlei Yu
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
| | - Huashan Jiang
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
| | - Hui Li
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
| | - Bo Xu
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
| | - Liang Zhao
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
| | - Hongjuan Wang
- Safety, Environment and Technology Supervision Research Institute, PetroChina Southwest Oil and Gas Field Company, Chengdu, People's Republic of China
- Sichuan Key Laboratory of Evaluation and Exploitation of Shale Gas, Chengdu, People's Republic of China
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Liang X, Li X, Chen Y, Wang Z, Zhu Y, Tian Y, Feng X, Zhu R. Optimization of microemulsion cleaning sludge conditions using response surface method. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 56:63-74. [PMID: 33095110 DOI: 10.1080/10934529.2020.1836920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Microemulsion cleaning method has been proved to be an effective way to clean oily sludge with low interfacial tension and high solubilizing ability for non-miscible liquids. In this paper, the percentage range of the microemulsion in the formulation was obtained by studying phase behavior of the microemulsion. The response surface method was used to model and optimize the microemulsion to obtain the best formulation: n-BuOH content at 9.89%, NaCl content at 2.24% and AES/APG ratio at 3.75, and the oil removal rate reached 97.28%. Meanwhile, the cleaning conditions of oil sludge were also optimized by the response surface method and the optimal cleaning parameters were determined as liquid-solid ratio at 4.2, stirring rate at 157 r·min-1, and stirring time at 38 min. In addition, some experiments were carried out to confirm the simulation results, affording the oil removal rate of 98.79%. SEM and FTIR confirmed that the oil on the sludge can be removed by microemulsion.
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Affiliation(s)
- Xuerui Liang
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
| | - Xin Li
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
| | - Yang Chen
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
| | - Zhanqiang Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
| | - Yingyue Zhu
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
| | - Yuqin Tian
- Petroleum Engineering Technology Research Institute, Shengli Oil Field Branch, SINOPEC, Dongying, China
| | - Xia Feng
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
| | - Rongjiao Zhu
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
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