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Tian K, Pu W, Wang Q, Xie M, Wang D, Wang M, Liu S. A Feasibility Study on Enhanced Oil Recovery of Modified Janus Nano Calcium Carbonate-Assisted Alkyl Polyglycoside to Form Nanofluids in Emulsification Flooding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4174-4185. [PMID: 38359328 DOI: 10.1021/acs.langmuir.3c03203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Emulsification flooding can effectively enhance crude oil recovery to solve the problem of petroleum shortage. In this work, a modified Janus Nano Calcium carbonate (JNC-12) with a particle size of 30-150 nm was synthesized, and an in situ emulsification nanofluid (ISEN) was prepared with JNC-12 and alkyl polyglycoside (APG). Scanning electron microscope (SEM) showed that the dispersion of JNC-12 in air or APG solution was better than Nano Calcium carbonate (Nano CaCO3). The emulsification properties, interfacial tension, and expansion modulus of ISEN were studied, and the result showed that with the increase in salinity, the emulsification rate decreased, the water yield rate increased, the interfacial tension first decreased and then increased, and the expansion modulus first increased and then decreased. With the increase in temperature, the emulsification rate, emulsion viscosity, and interfacial tension decreased. With the increased oil-water volume, the water yield rate and the emulsion viscosity increased. With increase in the concentration of JNC-12, the water yield rate, the emulsion viscosity, and the interfacial tension decreased but the expansion modulus increased. The emulsion generated by emulsifying ISEN with crude oil was an O/W emulsion, the crude oil viscosity was 4-10 times that of emulsion, and the average particle size of emulsion was 1.107 μm. The addition of ISEN caused the decrease in interfacial tension of oil-water to 0.01-0.1 mN/m. The wettability alteration experiment found that ISEN could change the lipophilic rock to hydrophilic rock. Finally, the core displacement experiments showed that compared with the first water flooding, the oil recovery of the second water flooding after ISEN flooding enhanced by 17.6%. This research has important guiding significance for in situ emulsified nanofluid flooding to enhance oil recovery.
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Affiliation(s)
- Kaiping Tian
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
- School of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Wanfen Pu
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
- School of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Qianlong Wang
- School of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China
| | - Mengke Xie
- Southwest Oil & Gas Field Company, PetroChina, Chengdu, Sichuan 610051, China
| | - Dongdong Wang
- Sinopec Production Engineering and Technology Institute, Zhongyuan Oilfield Branch Company, Sinopec, Puyang 457001, China
| | - Muming Wang
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta T2N1N4, Canada
| | - Shun Liu
- School of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China
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Ntelane TS, Feleni U, Mthombeni NH, Kuvarega AT. CuFeS 2 supported on dendritic mesoporous silica-titania for persulfate-assisted degradation of sulfamethoxazole under visible light. J Colloid Interface Sci 2024; 654:660-676. [PMID: 37864871 DOI: 10.1016/j.jcis.2023.10.077] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/23/2023]
Abstract
Sulfamethoxazole (SMX) is a prevalent sulfonamide antibiotic found in the environment, and it has a variety of detrimental effects on environmental sustainability and water safety. Recently, the combination of photocatalysis and sulfate radical-based advanced oxidation processes (SR-AOPs) has attracted a lot of interest as a viable technique for degradation of refractory pollutants. In this study, a visible light active CuFeS2 supported on dendritic mesoporous silica-titania (CuFeS2-DMST) photocatalyst was synthesized to improve the ability of TiO2 to activate persulfate (PS) by introducing CuFeS2 (Fe2+/Fe3+, Cu+/Cu2+ redox cycles). The CuFeS2-DMST/PS/Vis system demonstrated superior SMX degradation efficiency (88.9%, 0.0146 min-1) than TiO2 because of reduced e-/h+ recombination, excellent charge separation and mobility, and a greater surface area than TiO2. Furthermore, after four consecutive photocatalytic cycles, the system demonstrated moderate stability. From chemical quenching tests, O2●-, h+, 1O2, SO4●- and ●OH were found to be the main reactive oxidizing species. The formed intermediates during the degradation process were identified, and degradation mechanisms were proposed. This study proposes a viable technique for activating PS using a low-cost, stable, and high-surface-area TiO2-based photocatalyst, and this concept can be applied to design photocatalysts for water treatment.
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Affiliation(s)
- Tau S Ntelane
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida, 1710 Johannesburg, South Africa; Department of Chemical Engineering, College of Science, Engineering and Technology, University of South Africa, Florida, 1710, Johannesburg, South Africa
| | - Usisipho Feleni
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida, 1710 Johannesburg, South Africa
| | - Nomcebo H Mthombeni
- Department of Chemical Engineering, College of Science, Engineering and Technology, University of South Africa, Florida, 1710, Johannesburg, South Africa; Department of Chemical Engineering, Faculty of Engineering and the Built Environment, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa
| | - Alex T Kuvarega
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida, 1710 Johannesburg, South Africa.
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He J, Jia H, Wang Q, Xu Y, Zhang L, Jia H, Song L, Wang Y, Xie Q. Investigation on pH and redox-trigged emulsions stabilized by ferrocenyl surfactants in combination with Al2O3 nanoparticles and their application for enhanced oil recovery. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Li X, Chen Y, Tian Y, Zheng S, Zhu R, Feng X, Liu C, Zhang Y, Chen J. Study on graphene-based emulsions as oil displacement agent. TENSIDE SURFACT DET 2022. [DOI: 10.1515/tsd-2022-2446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, graphene oxide (GO) was prepared by the improved Hummers method, and a synergistically stabilized emulsion of GO and emulsifier was formulated. The best emulsion formula obtained by Response Surface Methodology consists of 1.39‰ GO, and 2.92‰ OP-10; the water-oil ratio is 4:6, achieving an emulsion index of 92.83%. The emulsion still maintained good stability under high temperature and high salt conditions, meeting the environmental requirements of medium and low permeability reservoirs. For injected water flooding, emulsion flooding could increase the oil recovery by 15.41%.
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Affiliation(s)
- Xin Li
- Department of Chemistry , School of Science, Tianjin University , Tianjin , 300072 , China
| | - Yang Chen
- Department of Chemistry , School of Science, Tianjin University , Tianjin , 300072 , China
| | - Yuqin Tian
- Petroleum Engineering Technology Research Institute, Shengli Oil Field Branch , SINOPEC , Dongying, 257000 , China
| | - Shuang Zheng
- Department of Chemistry , School of Science, Tianjin University , Tianjin , 300072 , China
| | - Rongjiao Zhu
- Department of Chemistry , School of Science, Tianjin University , Tianjin , 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin , 300072 , China
| | - Xia Feng
- Department of Chemistry , School of Science, Tianjin University , Tianjin , 300072 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin , 300072 , China
| | - Cunhui Liu
- Tianjin Dagang Oilfield Bingang Petroleum Technology Group Co., Ltd. , Tianjin , 300000 , China
| | - Yichen Zhang
- Department of Chemistry , School of Science, Tianjin University , Tianjin , 300072 , China
| | - Jingyi Chen
- Department of Chemistry , School of Science, Tianjin University , Tianjin , 300072 , China
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Cao J, Wang J, Wang X, Zhang J, Liu K, Wang Y, Zhen W, Chen Y. Preparation and characterization of modified amphiphilic nano-silica for enhanced oil recovery. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127864] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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