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Shen L, Ai G, Liu H, Zhu L, Lai L, Yan X, Yu W, Mi Y. Synthesis and demulsification performance of a novel low-temperature demulsifier based on trimethyl citrate. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134543. [PMID: 38718501 DOI: 10.1016/j.jhazmat.2024.134543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/22/2024] [Accepted: 05/03/2024] [Indexed: 05/30/2024]
Abstract
A significant amount of water-in-oil (W/O) emulsion is generated during petroleum extraction. However, the current commercial demulsifiers are expensive to produce and requires high demulsification temperatures, leading to increased energy and economic consumption. To enhance the efficiency of demulsifiers and reduce the cost of demulsifying W/O emulsions, we have successfully developed a novel demulsifier named TCED through a straightforward two-step process. This demulsifier features trimethyl citrate as the hydrophilic core grafted with three hydrophobic chains. Its structure was characterized using EA, FT-IR and 1H NMR spectroscopy, and the demulsification performance was comprehensively evaluated. At a low demulsification temperature of 40 °C, TCED demonstrated a remarkable demulsification efficiency (DE) of 99.06% and 98.74% in emulsions containing water contents of 70% (E70) and 50% (E50), respectively. Especially, a DE of 100% could be obtained in both E70 and E50 emulsions at a concentration of 600 mg/L. Moreover, TCED displayed a high DE even at high salinity levels of 50,000 mg/L and across a wide pH range of 2-10. Additionally, the phase interface was consistently clear after demulsification. To investigate the demulsification mechanism of TCED, various adsorption kinetics experiments were conducted, including measurements of interfacial tension (IFT), surface tension (SFT), interfacial competitive adsorption, and stability of interfacial film. The results obtained from the experiments indicated that TCED possessed remarkable diffusion and replacement capabilities within the emulsions. As a result, it effectively disrupted the original interfacial active substances, such as asphaltenes aggregates found in crude oil. TCED exhibits a high DE at low concentration and temperature. This characteristic highlights its significant potential for low-temperature demulsification applications in the petroleum industry.
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Affiliation(s)
- Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Guosheng Ai
- Research Institute of Oil and Gas Engineering, PetroChina Tarim Oilfield Company, Korla 841000, PR China
| | - Hanguang Liu
- Kela Oil and Gas Production Management Zone, PetroChina Tarim Oilfield Company, Korla 841000, PR China
| | - Lianggen Zhu
- Dina Oil and Gas Production Management Zone, PetroChina Tarim Oilfield Company, Korla 841000, PR China
| | - Lu Lai
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Xuemin Yan
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Weichu Yu
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434023, PR China.
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Abdullah MM, Al-lohedan HA, Faqihi NA. Synthesis and Performance of Two New Amphiphilic Ionic Liquids for Demulsification of Water-in-Crude Oil Emulsions. ACS OMEGA 2023; 8:22245-22255. [PMID: 37360479 PMCID: PMC10286286 DOI: 10.1021/acsomega.3c03246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023]
Abstract
This work aims to synthesize and apply two novel amphiphilic ionic liquids (AILs) for the demulsification of water-in-crude oil (W/O) emulsions. To do that, 4-tetradecylaniline (TA) and 4-hexylamine (HA) were etherified using tetrethylene glycol (TEG) in the presence of bis(2- chloroethoxyethyl)ether (BE) as a cross-linker, yielding corresponding ethoxylated amines TTB and HTB. The obtained ethoxylated amines TTB and HTB were quaternized with acetic acid (AA), obtaining corresponding AILs TTB-AA and HTB-AA. The chemical structures, surface tension (ST), interfacial tension (IFT), and micelle size were investigated with various techniques. The performance of TTB-AA and HTB-AA to demulsify W/O emulsions was investigated using different influencing factors, including the demulsifier concentration, water content, salinity, and pH. Additionally, the obtained results were compared with a commercial demulsifier. The results indicated that the demulsification performance (DP) increased as the demulsifier concentration increased and the water content decreased; however, increased salinity slightly improved the DP. The data also showed that the highest DPs were achieved at a pH of 7, which suggested a change in the chemical structure of these AILs at a lower and higher pH due to their ionic structure. Furthermore, TTB-AA demonstrated higher DP than HTB-AA, which could be explained by its higher ability to reduce IFT due to a longer alkyl chain than that of HTB-AA. Furthermore, TTB-AA and HTB-AA showed significant DP compared to the commercial demulsifier especially with W/O emulsions at low water content.
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Zhang Z, Wang Z, Zhang H, Wang Q, Tang Y, Qu Q, Shen L, Mi Y, Yan X. An ionic liquid demulsifier with double cationic centers and multiple hydrophobic chains. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Ye F, Shen L, Liu S, Liu H, Zhang X, Zhang Z, Yang Y, Feng X, Tang Y, Xiang D, Mi Y, Yan X. Demulsification of amphiphilic gemini ionic liquids and its demulsification mechanism. CHEMOSPHERE 2022; 309:136650. [PMID: 36181854 DOI: 10.1016/j.chemosphere.2022.136650] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/07/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
This work aims to prepare two new amphiphilic and interfacial active gemini ionic liquids to treat crude oil and investigates its demulsification mechanism. Tetraethylene glycol was pretreated with thionyl chloride and used as a linker to connect succinimide or phthalimide, and then reacted with dodecyl benzene sulphonic acid to obtain the corresponding amphiphilic and interfacial active gemini ionic liquid STA or PTA, respectively. 1H nuclear magnetic resonance spectroscopy (1HNMR) and Fourier-transform infrared spectroscopy (FTIR) was used to determine the chemical structures. The demulsification tests showed the demulsification efficiency with 150 mg/L of STA or PTA at 60 °C for 30 min was 99.89% and 99.79%, respectively. Furthermore, the demulsification mechanism of STA and PTA were studied and the prominent demulsification ability of STA and PTA were attributed to the better interfacial activity and amphipathy which could destroy the asphaltenes interfacial film. These results showed that STA and PTA had excellent demulsification efficiency, which promised application in petroleum industry.
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Affiliation(s)
- Fan Ye
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Shi Liu
- Chuanqing Drilling Engineering Co. Ltd., China National Petroleum Corporation, Chengdu, 610051, PR China
| | - Huanyu Liu
- The Shale Oil Development Department of Longdong Area, The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Qingyang, 750000, PR China
| | - Xinyuan Zhang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Ying Yang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Yuqi Tang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Dong Xiang
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China.
| | - Xuemin Yan
- School of Chemistry & Environmental Engineering, Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Yangtze University, Jingzhou, 430023, China.
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Yang Y, Zhu M, Jin K, Wang Y, Wang J, Zhang Z, Shen L, Feng X, Mi Y. Preparation of a demulsifier for oily wastewater using thorn fir bark as raw materials via a hydrothermal and solvent-free amination route. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85525-85536. [PMID: 35799004 DOI: 10.1007/s11356-022-21860-0] [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: 04/22/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
In current work, a TB-EDA demulsifier for disposing oily wastewater was prepared using thorn fir bark (TB) as starting materials via a hydrothermal and solvent-free amination route. Field emission scanning electron microscope (FE-SEM), energy dispersive X-ray spectrometer (EDS), and Fourier transform infrared spectroscope (FT-IR) were employed to characterize the TB-EDA demulsifier. Three-phase contact angle (CA), interfacial activity, formation of interfacial film (FIF), coalescence time of droplets (CTD), dynamic interfacial tension (IFT), and Zeta potential were carried out to study the possible demulsification mechanism. Bottle test was performed to investigate the effect of the TB-EDA dosage, salinity, and pH value on the demulsification performance at room temperature. Light transmittance (DL) and oil removal rate (DR) of separated water were 94.7% and 97.2%, respectively, with 100 mg/L of TB-EDA demulsifier in oily wastewater at room temperature. In addition, the TB-EDA demulsifier has an excellent salt tolerance even at the salinity of 50,000 mg/L. The corresponding DL and DR could reach 99.8% and 99.9%, respectively.
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Affiliation(s)
- Ying Yang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Mingzhao Zhu
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, People's Republic of China
| | - Kechun Jin
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Yancheng Wang
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, People's Republic of China
| | - Jiangbo Wang
- The 3rd Oil Production Plant, PetroChina Changqing Oilfield Company, Yan'an, 717500, People's Republic of China
| | - Zongtan Zhang
- Oil & Gas Field Capacity Construction Division, PetroChina Tarim Oilfield Company, Korla, 841000, People's Republic of China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China.
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Liu B, Chen B, Ling J, Matchinski EJ, Dong G, Ye X, Wu F, Shen W, Liu L, Lee K, Isaacman L, Potter S, Hynes B, Zhang B. Development of advanced oil/water separation technologies to enhance the effectiveness of mechanical oil recovery operations at sea: Potential and challenges. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129340. [PMID: 35728323 DOI: 10.1016/j.jhazmat.2022.129340] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/23/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Mechanical oil recovery (i.e., booming and skimming) is the most common tool for oil spill response. The recovered fluid generated from skimming processes may contain a considerable proportion of water (10 % ~ 70 %). As a result of regulatory prohibition on the discharge of contaminated waters at sea, vessels and/or storage barges must make frequent trips to shore for oil-water waste disposal. This practice can be time- consuming thus reduces the overall efficiency and capacity of oil recovery. One potential solution is on-site oil-water separation and disposal of water fraction at sea. However, currently available decanting processes may have limited oil/water separation capabilities, especially in the presence of oil-water emulsion, which is inevitable in mechanical oil recovery. The decanted water may not meet the discharge standards and cause severe ecotoxicological impacts. This paper therefore comprehensively reviews the principles and progress in oil/water separation, demulsification, and on-site treatment technologies, investigates their applicability on decanting at sea, and discusses the ecotoxicity of decanted water in the marine environment. The outputs provide the fundamental and practical knowledge on decanting and help enhance response effectiveness and consequently reducing the environmental impacts of oil spills.
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Affiliation(s)
- Bo Liu
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Bing Chen
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada.
| | - Jingjing Ling
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Ethan James Matchinski
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Guihua Dong
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Xudong Ye
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Fei Wu
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Wanhua Shen
- Environmental Engineering Program, University of Northern British Columbia, Prince George, BC V2N 4Z9, Canada
| | - Lei Liu
- Department of Civil and Resource Engineering, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Kenneth Lee
- Ecosystem Science, Fisheries and Oceans Canada, Ottawa, ON K1A 0E6, Canada
| | - Lisa Isaacman
- Ecosystem Science, Fisheries and Oceans Canada, Ottawa, ON K1A 0E6, Canada
| | - Stephen Potter
- SL Ross Environmental Research Ltd., Ottawa, ON K2H 8S9, Canada
| | - Brianna Hynes
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
| | - Baiyu Zhang
- Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada
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Yang Y, Jiang X, Liu H, Ai G, Shen L, Feng X, Ye F, Zhang Z, Yuan H, Mi Y. Diethylenetriamine modified biological waste for disposing oily wastewater. ENVIRONMENTAL RESEARCH 2022; 212:113395. [PMID: 35513064 DOI: 10.1016/j.envres.2022.113395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/23/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
Oily wastewater produced in the process of oil extraction has a potential threat to the environment. In this paper, diethylenetriamine was used to modify rice straw powder (RSP) by a solvent-free strategy, and the obtained product (AM-RSP) was utilized to dispose oily wastewater. AM-RSP was characterized by Field emission scanning electron microscope (FE-SEM), energy dispersive spectrometer (EDS), Fourier transform infrared spectroscope (FT-IR) and BET. The factors affecting the demulsification performance (DP) such as dosage, salinity and pH value were detailly investigated. The results indicated that light transmittance (ET) and oil removal rate (ER) of separated water could reach 93.5% and 96.5%, respectively, within 40 min with 150 mg/L of AM-RSP at room temperature. Also, AM-RSP had a good salt resistance. In addition, three-phase contact angle (TCA), formation of interfacial film, interfacial activity, dynamic interfacial tension (IFT), coalescence time of droplets and zeta potential were adopted to probe the demulsification mechanism.
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Affiliation(s)
- Ying Yang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Xuebin Jiang
- Safety and Environmental Protection Quality Supervision and Testing Research Institute, CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Hanjun Liu
- Safety and Environmental Protection Quality Supervision and Testing Research Institute, CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Guosheng Ai
- Xinjiang Tarim Oilfield Construction Engineering Co., Ltd., PetroChina Tarim Oilfield Company, Korla, 841000, PR China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Fan Ye
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Huaikui Yuan
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
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Ye F, Jiang X, Liu H, Ai G, Shen L, Yang Y, Feng X, Yuan H, Zhang Z, Mi Y, Yan X. Amine functional cellulose derived from wastepaper toward oily wastewater treatment and its demulsification mechanism. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Chen L, Ye F, Liu H, Jiang X, Zhao Q, Ai G, Shen L, Feng X, Yang Y, Mi Y. Demulsification of oily wastewater using a nano carbon black modified with polyethyleneimine. CHEMOSPHERE 2022; 295:133857. [PMID: 35122810 DOI: 10.1016/j.chemosphere.2022.133857] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/21/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
In this work, nano carbon black was modified with polyethyleneimine (CB-PEI) under an ultrasonic field. The obtained product was used as a demulsifier to break oily wastewater. Morphology, structure, and chemical composition of CB-PEI were systematically analyzed. Bottle test was carried out to evaluate the influence of dosage, pH value and salinity on the demulsification efficiency of the emulsion. The results showed that the light transmittance of water phase (TSW) after the demulsification was 79.1% and corresponding oil removal rate (ORR) could reach up to 99.4% with 60 mg/L of CB-PEI at ambient temperature for 30 min. In addition, the possible demulsification mechanism was explored by dynamic interface tension (IFT), elasticity modulus, wettability, self-assemble of interfacial membrane, zeta potential and micrograph analysis. It indicated that CB-PEI had an appropriate amphiphilicity and good interfacial activity, which could improve it quickly transfer to the oil-water interface and result in the oil-water separation. The current work provides a simple method to prepare a demulsifier with excellent performance, so it has a good application prospect for the treatment of oil-water emulsions.
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Affiliation(s)
- Lihan Chen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Fan Ye
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Hanjun Liu
- Safety and Environmental Protection Quality Supervision and Testing Research Institute, CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Xuebin Jiang
- Safety and Environmental Protection Quality Supervision and Testing Research Institute, CNPC Chuanqing Drilling Engineering Co. Ltd., Guanghan, 618300, PR China
| | - Qingmei Zhao
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
| | - Guosheng Ai
- Xinjiang Tarim Oilfield Construction Engineering Co., Ltd., PetroChina Tarim Oilfield Company, Korla, 841000, PR China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Ying Yang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
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