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Novel Oil–Water Separation Technologies Applied in Marine Environmental Science
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Novel Oil–Water Separation Technologies Applied in Marine Environmental Science

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Marine Environmental Science".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 10398

Image courtesy of Qiang Yang

Special Issue Editors

Prof. Dr. Qiang Yang

E-Mail Website1 Website2
Guest Editor
1. National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai 200237, China
2. School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
Interests: advanced separation materials/novel oil-water separation technology; bubble-enhanced reaction/separation technology and equipment; microreactor
Dr. Sohrab Zendehboudi

E-Mail Website
Guest Editor
Department of Process Engineering, Memorial University, St. John’s, NL A1C 5S7, Canada
Interests: energy and environment; transport phenomena; carbon capture, utilization, and sequestration; multiscale and multi-physics modelling; process systems engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Offshore oil and gas production, which is a significant source of petroleum, has recently been the subject of extensive concern. Organic pollutants dominated by hydrocarbons, in particular oil, have become a significant concern of researchers because of their threat to the marine ecosystem. The provision of attractive strategies is encouraged to answer the ecological menace caused by hydrocarbon exploitation in offshore oil and gas fields, to the benefit of both the economy and the environment.

Submissions of high-quality papers are encouraged. Works should be directly related to various aspects mentioned below. Novel techniques for study are encouraged. Possible topics include but are not limited to the following:

  • Novel oil-water separation technologies applied in marine environmental science;
  • Modeling and simulation;
  • Case studies;
  • Equipment and innovation;
  • Countermeasures for oil separation on spill and produced water treatment;
  • Impact assessment on marine environment.

Prof. Dr. Qiang Yang
Dr. Sohrab Zendehboudi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • industrial oil wastewater treatment
  • oil-water separation on offshore oil and gas field
  • enhanced separation methods
  • marine environmental science
  • flow field
  • application of novel material
  • innovation of separation devices

Published Papers (6 papers)

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Editorial

Jump to: Research

3 pages, 159 KiB  
Editorial
Editorial of the Special Issue “Novel Oil–Water Separation Technologies Applied in Marine Environmental Science”
by Qiang Yang
J. Mar. Sci. Eng. 2024, 12(3), 447; https://doi.org/10.3390/jmse12030447 - 01 Mar 2024
Viewed by 727
Abstract
The marine environment, a vital component of the Earth’s ecosystem, is increasingly threatened by pollution, and notably by oil spills [...] Full article
(This article belongs to the Special Issue Novel Oil–Water Separation Technologies Applied in Marine Environmental Science)

Research

Jump to: Editorial

16 pages, 4701 KiB  
Article
High-Efficiency Pre-Treatment Core Tube for Produced Water in the Main Cavity Coupled with Secondary Cavities and Its Application in the Bohai Heavy Oilfield
by Yudong Li, Yundong Qian, Hao Lu, Pinyi Dai, Huatong Zhu, Qiang Yang and Yiqian Liu
J. Mar. Sci. Eng. 2023, 11(1), 93; https://doi.org/10.3390/jmse11010093 - 04 Jan 2023
Cited by 1 | Viewed by 1240
Abstract
Improving the produced fluid yield is an effective measure for realizing the crude oil production capacity of offshore platforms. However, for offshore platforms employed in production, using the narrow space of the platform to expand the produced water treatment system is a significant [...] Read more.
Improving the produced fluid yield is an effective measure for realizing the crude oil production capacity of offshore platforms. However, for offshore platforms employed in production, using the narrow space of the platform to expand the produced water treatment system is a significant problem. In this study, a highly efficient pre-treatment core tube was coupled with the main cavity and secondary cavities (MCSCs) based on a vane-type tubular separator and a cub-mother cyclone. The optimal inlet Reynolds number and processing capacity were determined according to the structure size of the MCSC, and the MCSC was applied to achieve highly efficient pre-treatment of produced water in a heavy oilfield in the Bohai Sea. The comprehensive evaluation indicators FA and FV were better than those used by current technology. When the influent oil content fluctuated around 2000 mg/L (average of 1772.81 mg/L), the oil content in the effluent was stable and below 200 mg/L (average of 106.44 mg/L), and the separation efficiency was nearly 94%. Compared to those of the current corrugated plate interceptor on the platform, the floor space was reduced by more than 60% and the separation efficiency increased by up to 65%. Full article
(This article belongs to the Special Issue Novel Oil–Water Separation Technologies Applied in Marine Environmental Science)
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14 pages, 5206 KiB  
Article
Enhanced Coalescence of Fine Droplets by Medium Coalescence under an Electric Field
by Silong Feng, Shihan Wu, Yudong Li, Xiuna Yang, Ying Yu, Yiqian Liu and Hao Lu
J. Mar. Sci. Eng. 2023, 11(1), 71; https://doi.org/10.3390/jmse11010071 - 02 Jan 2023
Viewed by 1366
Abstract
As more and more oilfields enter later stages of extraction, demulsification of water-in-oil (W/O) emulsions with high water content has become a challenging problem. To upgrade the current offshore oil treatment process, a compact and efficient demulsification treatment is highly desirable. In this [...] Read more.
As more and more oilfields enter later stages of extraction, demulsification of water-in-oil (W/O) emulsions with high water content has become a challenging problem. To upgrade the current offshore oil treatment process, a compact and efficient demulsification treatment is highly desirable. In this paper, a novel enhanced treatment combining a direct current (DC) electric field and medium coalescence was proposed. Based on this idea, an electric-medium demulsifier was also designed for deep purification of W/O emulsions. The effects of operating conditions, emulsions characteristics and medium bed parameters on demulsification performance were investigated. The enhanced treatment showed better performance compared to electrostatic demulsification and medium coalescence alone, and was especially suitable for treating emulsions with strong emulsification. In short, at U = 3 kV, the demulsification efficiency increased by approximately 30% compared to that at U = 0 kV. This research provided a new approach for the treatment of W/O emulsions that has the advantages of wide operational flexibility, a tolerance for deteriorated characteristics and a rapid and thorough treatment process. Full article
(This article belongs to the Special Issue Novel Oil–Water Separation Technologies Applied in Marine Environmental Science)
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19 pages, 5873 KiB  
Article
Research on the Enhancement of the Separation Efficiency for Discrete Phases Based on Mini Hydrocyclone
by Lin Liu, Lixin Zhao, Yahong Wang, Shuang Zhang, Minhang Song, Xueqiang Huang and Zhongrun Lu
J. Mar. Sci. Eng. 2022, 10(11), 1606; https://doi.org/10.3390/jmse10111606 - 31 Oct 2022
Cited by 3 | Viewed by 1813
Abstract
The economic and efficient treatment of mixed media in offshore produced fluids is of great significance to oilfield production. Due to the small space and limited load-bearing capacity of offshore platforms, some mature multiphase media separation processes in onshore oilfields are difficult to [...] Read more.
The economic and efficient treatment of mixed media in offshore produced fluids is of great significance to oilfield production. Due to the small space and limited load-bearing capacity of offshore platforms, some mature multiphase media separation processes in onshore oilfields are difficult to apply. Therefore, high-efficiency processing methods with small-occupied space are required. Mini hydrocyclones (MHCs) are a potential separation method due to their simple structure, small footprint, and high separation efficiency (especially for fine particles or droplets). However, for discrete phases with different densities and sizes, the enhancement rule of the separation efficiency of MHCs is not yet clear. In this paper, numerical simulation methods were used to study the separation performance of hydrocyclones with different main diameters (including conventional hydrocyclones (CHCs) and MHCs) for discrete phases with different densities and particle sizes. Results show that MHC has the optimal enhancement range for oil–water separation when oil-droplet sizes are 60–300 μm, while the optimal enhancement range for silica particle and water separation is 10–40 μm. For other droplet/particle size ranges, the efficiency enhancement effect of MHC is not obvious compared to conventional hydrocyclones. By calculating the radial force of particles in MHC and CHC, the reasons for the enhanced efficiency of MHC are theoretically analyzed. The pressure drop of MHC is higher than CHC under the same feed velocity, which can be improved by connecting CHC with MHC. Additionally, the fluid velocity test experiments based on particle image velocimetry (PIV) were carried out to verify the accuracy of the numerical simulations. This study clarified the scope of application of MHCs to different discrete phase types, in order to provide a basis for the precise application of MHCs. Full article
(This article belongs to the Special Issue Novel Oil–Water Separation Technologies Applied in Marine Environmental Science)
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16 pages, 3702 KiB  
Article
Numerical Simulation Investigation of Vortex Finder Depth Effects on Flow Field and Performance of Desanding Mini-Hydrocyclones
by Fengqin He, Decao Zhao, Jiangang Wang, Yuan Huang and Qibin Liu
J. Mar. Sci. Eng. 2022, 10(11), 1600; https://doi.org/10.3390/jmse10111600 - 31 Oct 2022
Viewed by 1365
Abstract
Sand has significant side effects on oil production and offshore platform processing system. Mini-hydrocyclones is a very important component to desanding operation system. However, even a slight modification on the structural parameter of hydrocylone might result in a significant influence on its flow [...] Read more.
Sand has significant side effects on oil production and offshore platform processing system. Mini-hydrocyclones is a very important component to desanding operation system. However, even a slight modification on the structural parameter of hydrocylone might result in a significant influence on its flow field and separation efficiency. So, analysis on flow field characteristics and separation efficiency of the mini-hydrocyclones can help to optimize its structural parameters. In this work, five mini-hydrocycloness were designed, and flow patterns and particle separation ability of a mini-hydrocyclones with various vortex finder depths were investigated through Computational Fluid Dynamics (CFD) simulation method. The research shows that vortex finder depth has a significant influence on the separation function partition of mini-hydrocyclones. The deeper the vortex finder depth is, the larger the volume of pre-separation area, the smaller the volume of the main separation area and the bigger the energy consumption are. These characteristics are disadvantage to improve separation performance of hydrocyclone. Ratio (L0/D) of vortex finder depth (L0) to the hydrocyclone cylinder diameter (D) is about 1.0. Full article
(This article belongs to the Special Issue Novel Oil–Water Separation Technologies Applied in Marine Environmental Science)
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15 pages, 3010 KiB  
Article
Study on the Performance of an Electric-Field-Enhanced Oil–Water Separator in Treating Heavy Oil with High Water Cut
by Songtao Huang, Xue He, Jiaqing Chen, Xiujun Wang, Jian Zhang, Jianyu Dong and Baosheng Zhang
J. Mar. Sci. Eng. 2022, 10(10), 1516; https://doi.org/10.3390/jmse10101516 - 17 Oct 2022
Cited by 3 | Viewed by 2736
Abstract
As most offshore oilfields come to the middle- and late-exploitation period, and with the popularization of tertiary enhanced oil recovery (EOR) technology, the physical properties of produced fluids become more complex, bringing new challenges to oil-water separation. Conventional solutions, such as increasing the [...] Read more.
As most offshore oilfields come to the middle- and late-exploitation period, and with the popularization of tertiary enhanced oil recovery (EOR) technology, the physical properties of produced fluids become more complex, bringing new challenges to oil-water separation. Conventional solutions, such as increasing the input of chemicals, enlarging the volume of the separator equipment, and extending the processing, are usually uneconomical and space-wasting. Electric-field-enhanced oil-water separation equipment was developed in this paper, and a mine field test was carried out. With the average water cut of different sampling ports and the overall dehydration rate taken as indicators, the effects of electric field frequency, inlet flow, chemical type, and addition upon the separation of the device were evaluated. The experimental results showed that for the ABJ mixed liquid, the optimal operating frequency of the electric field is above 3500 Hz. Compared with traditional separation equipment, the advantages of the electric-field-enhanced oil–water separation equipment are more significant in large flow conditions. When the water cut of the platform inlet fluctuates between 78% and 97%, and without the addition of chemicals, the average water cut was reduced to 7% and the average dehydration rate reached 90%, an improvement of about 15%. Full article
(This article belongs to the Special Issue Novel Oil–Water Separation Technologies Applied in Marine Environmental Science)
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