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Journal articles on the topic 'Water/Oil Separation'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Sinha, Shayandev, Khaled A. Mahmoud, and Siddhartha Das. "Conditions for spontaneous oil–water separation with oil–water separators." RSC Advances 5, no. 98 (2015): 80184–91. http://dx.doi.org/10.1039/c5ra16096k.

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2

Zhong, Xing Fu, Ying Xiang Wu, Song Mei Li, and Peng Ju Wei. "Investigation of Pipe Separation Technology in the Oilfield." Advanced Materials Research 616-618 (December 2012): 833–36. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.833.

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Crude oil separating is an important technological process in the petroleum industry. Pipe separation technology (PST) is a new kind of separating method in oil-water-gas separation. To compare with conventional gravity separators, the new separator based on PST is low weight, low cost, efficient and convenient to maintain. This paper introduces this new compact separator, technological process and performance test. The test results show that the compact separator has good separating effect. When the water-cut inlet is from 50% to 60%, and the mixture flow rate is from 40 t/hr to 100 t/hr, the water-cut in oil outlet is less than 5%, and the oil-cut in water is less than 100 mg/l.

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3

Yang, Lele, Jing Wang, Yong Ma, Sen Liu, Jun Tang, and Yongbing Zhu. "Oil-Water-Gas Three-Phase Separation in Multitube T-Junction Separators." Water 11, no. 12 (December 16, 2019): 2655. http://dx.doi.org/10.3390/w11122655.

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Multitube T-junctions can be used as an oil-water-gas pre-separator in the oil and gas industry. In this paper, the mixture model, coupled with the k-ε turbulent model, was applied for a simulation of the oil-water-gas three-phase flow characteristics in the multitube T-junction separator. The oil droplet size ranged from 1 to 4 mm. The water content ranged from 5% to 20% and the gas content from 3% to 25%. According to the phase separation results for different droplet sizes, it was found that, as the oil droplet size increased, the water content at the water outlet initially increased and then tended to be stable. Therefore, it was necessary to increase the oil droplet size through corresponding measures before flowing into the T-junction for separation. For the separator with an inner diameter of 50 mm, the oil content at the inlet had a great influence on the water-oil separation performance, and the water-oil separation performance was obviously improved as the oil content decreased. Owing to increased residence time, the oil content had little influence on the water-oil separation performance when the separator with an inner diameter of 100 mm was applied. Moreover, for the separator with an inner diameter of 100 mm, the oil content had little influence on the degassing effect, and more than 90% of the gas could be discharged from the gas outlet. The separation performance of the multitube T-junction separator became worse as the inlet gas content increased.

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4

van Schie, Louis. "Oil/water separation: Suparator meets the oil/water challenge." Filtration + Separation 50, no. 3 (May 2013): 50–51. http://dx.doi.org/10.1016/s0015-1882(13)70132-0.

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5

Yong, Jiale, Qing Yang, Jinglan Huo, Xun Hou, and Feng Chen. "Superwettability‐based separation: From oil/water separation to polymer/water separation and bubble/water separation." Nano Select 2, no. 8 (February 20, 2021): 1580–88. http://dx.doi.org/10.1002/nano.202000246.

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6

Cai, Wen Bin, Yuan Gang Xu, and Qi Zhang. "Design of Downhloe Oil-Water Cyclone Separator and the Study of Laboratory Experiment." Advanced Materials Research 339 (September 2011): 630–33. http://dx.doi.org/10.4028/www.scientific.net/amr.339.630.

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The cyclone plays an important role in the downhole oil-water separator during artificial lift for high water cut oil well, the processes of oil-water separation is completing in the cyclone. The oil-water cyclone separator was designed based on the oil and water density contrast and the cyclone separation theory; the laboratory experiment of cyclone separator was carried out and the relationship of the cyclone oil cut of apex and split ratio, oil-water separation efficiency and the velocity , the pressure loss of the cyclone and the velocity were also studied. When the reinjectivity is within 70% of the produced volume, cyclone separator has good water-oil separation ability, split ratio increased with the increase of the vecolity, when the flow vecolity reached 0.25m/s, the split ratio over 30%. But with the increase of the velocity, the increased rate of the split ratio is reduced. The relationship of the flow rate and cyclone intrinsic pressure loss is nonlinear exponential curve.

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7

Sokolovic, S., R. Secerov-Sokolovic, and S. Sevic. "Two-Stage Coalescer for Oil/Water Separation." Water Science and Technology 26, no. 9-11 (November 1, 1992): 2073–76. http://dx.doi.org/10.2166/wst.1992.0664.

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Many different types of coalescers are used for separation of oil-in-water dispersion. The investigated results of a newly developed two stage coalescer are given in this work. The proposed designofthis coalescer includes two independent stages which are set in the same coalescer body. Expanded polystyrene granules are being used in the first stage. By using this coalescent material, gravity separation and the large oil droplets, coalescence processes are at the same time being insured. The second stage of this new type of coalescer uses polyurethane foam. The surface of this layer has been previously oiled. the proposed two stage coalescer has been tested for different type of oily wastewaters. A high loaded oilywastewater has been treatedby the new coalescer separator in the field In a one year working period, a mean oil separation efficiency has been higher than 98 %. The proposed coalescer can be use for suspended solids separation at the same time. Mean separation efficiency has been 85% duringthe field test.

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8

Kharkov, Nikita, Olga Ermak, and Olesya Aver’yanova. "Numerical Simulation of the Centrifugal Separator for Oil-Water Emulsion." Advanced Materials Research 945-949 (June 2014): 944–50. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.944.

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Calculation of a centrifugal water oil separator is shown. The separator represents alternative method of purifying water of oil inclusions and sludge (at a concentration up to 12%). The problems of creating a computational mesh, defining boundary conditions, separation two phases of oil-water emulsion and efficiency of separation are considered.

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9

Leitão, Antonio A., and Carla M. P. Rangel. "Analysis of the Copesul Water-Oil Separation System." Water Science and Technology 20, no. 10 (October 1, 1988): 91–100. http://dx.doi.org/10.2166/wst.1988.0128.

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This paper presents an overview of the water-oil separation system at COPESUL (Companhia Petroquímica do Sul). The design and operation of the system are discussed, and possible changes to be implemented to keep the oil and grease content of the effluent within the limits acceptable for its admission to SITEL (the integrated system of liquid effluent treatment of the South Petrochemical Complex). Since the start of operation, the system chosen, which includes a pre-separator and tiltable plate interceptor (TPI) water-oil separator, has experienced problems. The effluent generated has frequently had an oil and grease content above the limit set for acceptance by SITEL. The situation was investigated, and it was found that the problem was due to the following: operational conditions were different to the design conditions; oil with a density higher than water was present; there were deficiencies in the maintenance and cleaning systems. Various options were studied to eliminate these problems, and priority was given to increasing the capacity of the separation system, segregating the oil with a density higher than water at its source, and increasing the frequency of system maintenance. It was thought that these measures would result in an effluent oil and grease content less than 100 mg/l, and that the separation system would operate with greater flexibility.

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10

Calcagnile, Paola, Despina Fragouli, Ilker S. Bayer, George C. Anyfantis, and Athanassia Athanassiou. "Magnetoactive Superhydrophobic Foams for Oil-Water Separation." Advances in Science and Technology 77 (September 2012): 159–64. http://dx.doi.org/10.4028/www.scientific.net/ast.77.159.

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A novel composite material for the efficient separation of oil from water is presented. It is based on polyurethane (PU) foams modified with colloidal superparamagnetic iron oxide nanoparticles (NPs) in their whole volume and sub-micrometer polytetrafluoroethylene (PTFE) particles on their surface. The hydrophobic and oleophobic original foam becomes water-repellent and oil-absorbing due to the presence of the PTFE particles on its surface. The oil absorption rate is significantly increased by the presence of the colloidal iron oxide NPs. Detailed analysis demonstrates that the NP capping molecules play a significant role in the oil absorption mechanism. Furthermore, the treated foams can be magnetically actuated, and be moved towards oil polluted waters by a weak magnet. As a result, they can absorb the oil contaminants from the water surface, purifying it.

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11

Liu, Hong Jun, Guang Zheng Jia, Shi Peng Chen, and Yong Peng Cai. "Optimization of Flow Deflector Quantities for Gravity Oil-Water Separator." Applied Mechanics and Materials 675-677 (October 2014): 685–88. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.685.

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The internal structure and the working principle of gravity oil-water separator used for self-circulation well-flushing equipment were introduced. Based on CFD, the flow field was calculated and analyzed with different quantities of horizontal deflectors and inclined deflectors in the separator. According to velocity vector diagrams and oil drop trajectory diagrams with different number of horizontal deflectors and inclined deflectors, the influence rules on separation efficiency were analyzed. The results show that the separation efficiency is improved gradually with the amount of horizontal deflectors increased, and the optimal value of separation efficiency is 3 inclined deflectors.

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12

Ma, Wenjing, Qilu Zhang, Dawei Hua, Ranhua Xiong, Juntao Zhao, Weidong Rao, Shenlin Huang, Xianxu Zhan, Fei Chen, and Chaobo Huang. "Electrospun fibers for oil–water separation." RSC Advances 6, no. 16 (2016): 12868–84. http://dx.doi.org/10.1039/c5ra27309a.

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13

Udayakumar, Kavitha Vellopollath, Prakash M. Gore, and Balasubramanian Kandasubramanian. "Foamed materials for oil-water separation." Chemical Engineering Journal Advances 5 (March 2021): 100076. http://dx.doi.org/10.1016/j.ceja.2020.100076.

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14

Deng, Bin, Wanrong Li, Bin Du, Rubai Luo, and Shisheng Zhou. "Superwetting interfaces for oil/water separation." AIP Advances 11, no. 2 (February 1, 2021): 025336. http://dx.doi.org/10.1063/5.0031090.

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15

Guan, Yihao, Fangqin Cheng, and Zihe Pan. "Superwetting Polymeric Three Dimensional (3D) Porous Materials for Oil/Water Separation: A Review." Polymers 11, no. 5 (May 6, 2019): 806. http://dx.doi.org/10.3390/polym11050806.

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Oil spills and the emission of oily wastewater have triggered serious water pollution and environment problems. Effectively separating oil and water is a world-wide challenge and extensive efforts have been made to solve this issue. Interfacial super-wetting separation materials e.g., sponge, foams, and aerogels with high porosity tunable pore structures, are regarded as effective media to selectively remove oil and water. This review article reports the latest progress of polymeric three dimensional porous materials (3D-PMs) with super wettability to separate oil/water mixtures. The theories on developing super-wetting porous surfaces and the effects of wettability on oil/water separation have been discussed. The typical 3D porous structures (e.g., sponge, foam, and aerogel), commonly used polymers, and the most reported techniques involved in developing desired porous networks have been reviewed. The performances of 3D-PMs such as oil/water separation efficiency, elasticity, and mechanical stability are discussed. Additionally, the current challenges in the fabrication and long-term operation of super-wetting 3D-PMs in oil/water separation have also been introduced.

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16

Kusumaatmaja, Ahmad, Najmudin Fauji, and Kuwat Triyana. "Polysulfone/Polyacrilonitrile Membrane for Oil/Water Separation." Materials Science Forum 886 (March 2017): 145–49. http://dx.doi.org/10.4028/www.scientific.net/msf.886.145.

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Polysulfone (PSF)/polyacrylonitrile (PAN) membrane had been developed by electrospinning method to investigate the ability of membrane for oil/water separation. The ratios of PSF to PAN were varied as 7:3, 5:5, 3:7, and 0:10 in 10wt% of total concentration. In general, ratio PSF to PAN 5:5 gave the best morphology with smooth nanofibers and good permeability. The results show that increase of PAN concentration leads to the increase of water permeability. The addition of PAN into PSF changed the membrane surface properties from hydrophobic to hydrophilic. PAN/PSF membrane with a ratio of PSF to PAN as 5:5, 3:7, and 0:10 were showing high resistant for oil. It suggested that PSF/PAN membrane with the large composition of PAN could be used as water/oil separator.

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17

Tian, Yanling, Jiekai Feng, Zexin Cai, Jiaqi Chao, Dawei Zhang, Yuxiao Cui, and Faze Chen. "Dodecyl Mercaptan Functionalized Copper Mesh for Water Repellence and Oil-water Separation." Journal of Bionic Engineering 18, no. 4 (July 2021): 887–99. http://dx.doi.org/10.1007/s42235-021-0062-7.

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AbstractReckless discharge of industrial wastewater and domestic sewage as well as frequent leakage of crude oil have caused serious environmental problems and posed severe threat to human survival. Various nature inspired superhy-drophobic surfaces have been successfully applied in oily water remediation. However, further improvements are still urgently needed for practical application in terms of facile synthesis process and long-term durability towards harsh environment. Herein, we propose a simple one-step dodecyl mercaptan functionalization method to fabricate Super-hydrophobic-Superoleophilic Copper Mesh (SSCM). The prepared SSCM possesses excellent water repellence and oil affinity, enabling it to successfully separate various oil-water mixtures with high separation efficiency (e.g., > 99% for hexadecane-water mixture). The SSCM retains high separating ability when hot water and strong corrosive aqueous solutions are used to simulate oil-water mixtures, indicating remarkable chemical durability of the dodecyl mercaptan functionalized copper mesh. Additionally, the efficiency can be well maintained during 50 cycles of separation, and the water repellence is even stable after storage in air for 120 days, demonstrating the reusability and long-term stability of the SSCM. Furthermore, the functionalized mesh also shows good mechanical robustness towards abrasion by sandpaper, and oil-water separation efficiency of > 96% can be obtained after 10 cycles of abrasion. The reported one-step dodecyl mercaptan functionalization could be a simple method for increasing the water repellence of copper mesh, and thereby be a great candidate for treating large-scale oily wastewater in harsh environments.

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18

Qiu, Lei, and Ji Hai Duan. "Design and Simulation Optimization of the Gravity Oil-Water Separator." Advanced Materials Research 955-959 (June 2014): 2756–59. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2756.

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An oil/water separator with inlet component, perforated plates and coalesence internals was designed in this paper. The influence of the perforated plates on the flow field and the structures of coalesence component on the oil/water separation were simulated by commercial software FLUENT. The results show that the perforated plates can prevent turbulence and eliminate back-mixing flow effectively. And the flow field uniformity was the best,when the distance between the two plates was 140mm.The separator with inclined plates had the highest separation efficiency of the three structures.

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19

Liu, Hong Jun, Guang Zheng Jia, Yong Peng Cai, and Shi Peng Chen. "Design and Analysis for Partition Plate of Gravity Oil-Water Separator." Applied Mechanics and Materials 675-677 (October 2014): 669–73. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.669.

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The internal structure and the working principle of gravity oil-water separator used for self-circulation well-flushing equipment were given. Based on CFD, the flow field was calculated and analyzed with partition plate settings. The influences on separation efficiency were analyzed, according to velocity vector diagrams and oil drop trajectory diagrams. The results show that the location of the primary partition plate is installed more reasonable, the efficiency of separation is more advantage. Also, the structure and size of the primary partition plate and the size of the auxiliary partition plate can influence the efficiency of oil-water separation regularly.

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20

Nunez, Cristian, Ramin Dabirian, Ilias Gavrielatos, Ram Mohan, and Ovadia Shoham. "Methodology for Breaking Up Nanoparticle-Stabilized Oil/Water Emulsion." SPE Journal 25, no. 03 (March 12, 2020): 1057–69. http://dx.doi.org/10.2118/199892-pa.

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Summary A state-of-the-art portable dispersion characterization rig (P-DCR) is applied to study emulsions with Exxsol™ mineral oil (ExxonMobil Chemical Company, Houston, Texas, USA), commercial distilled water, and hydrophobic silica nanoparticles (NPs) as emulsifiers. The emulsion is prepared in the P-DCR batch-separator vessel, whereby the separation kinetics are observed and recorded. In this study, emulsion breakup by the integration of oil extraction/water addition and a stirring process is investigated, which is formed with 25% water cut (WC) and 0.01% w/w hydrophobic NPs (dispersed in the oil phase). The experimental data are divided into three data sets: oil extraction only, oil-extraction/pure-water addition, and oil-extraction/water with hydrophilic NP addition. For oil extraction only (Data Set 1), the WC of the fluid mixture increases, and for a sufficient volume extraction, phase inversion occurs that results in a complete separation of the oil and water. The minimum final required NP concentration for a fast separation, defined as the minimum concentration of NP required to begin the phase separation of the emulsion, is approximately 0.0045%. The acquired data for oil-extraction/pure-water-addition (Data Set 2) result in a faster breakup of the emulsion, as compared with oil extraction only. The oil-extraction/pure-water-addition process increases the system WC faster, reaching the phase-inversion point sooner. For the oil-extraction/pure-water-addition, the final lowest WC and NP concentrations are approximately 37% and 0.006% w/w, respectively, for fast separation. Thus, it can be concluded that the NP concentration and the WC are related. Repetitive oil-extraction/pure-water-addition cycles enable determination of the combined effects of the WC and NP on the separation process. A relatively stable emulsion is reached after approximately 2 minutes from the beginning of each cycle, which enables determining whether a quick separation occurs at the current cycle. Data Set 3 (oil-extraction/water with hydrophilic NP addition) results reveal that dispersing hydrophilic NPs in water does not promote emulsion breakup. On the contrary, the NPs produce a slightly more stable emulsion. The separation process, however, does not differ significantly even for high hydrophilic NP concentrations, emphasizing the dominant role of the hydrophobic particles (dispersed in the base-case emulsion).

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21

Kokal, Sunil L., and Abdulla Al Ghamdi. "Oil/Water Separation Experience From a Large Oil Field." SPE Production & Operations 21, no. 03 (August 1, 2006): 365–71. http://dx.doi.org/10.2118/93386-pa.

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22

Bybee, Karen. "Oil/Water-Separation Experience From a Large Oil Field." Journal of Petroleum Technology 57, no. 12 (December 1, 2005): 41–42. http://dx.doi.org/10.2118/1205-0041-jpt.

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23

Xu, Hongxiang, Jiongtian Liu, Yongtian Wang, Gan Cheng, Xiaowei Deng, and Xiaobing Li. "Oil removing efficiency in oil–water separation flotation column." Desalination and Water Treatment 53, no. 9 (April 22, 2014): 2456–63. http://dx.doi.org/10.1080/19443994.2014.908413.

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24

Yang, Shu Ren, Di Xu, Chao Yu, Jia Wei Fan, and Cheng Chu Yue Fu. "Optimization Design for Oil-Water Separator of Injection-Production Technology in the same Well." Advanced Materials Research 803 (September 2013): 383–86. http://dx.doi.org/10.4028/www.scientific.net/amr.803.383.

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In order to solve the problem of high water cut wells in some oil field in Daqing that it could not get the large-scale application because of the bad separating effect of down hole centrifugal oil-water separator, we optimize the design of multi-cup uniform flux oil-water separator according to the similar separation principle of multi-cup uniform flux gas anchor, and it is obtained to achieve of injection-production technology in the same well which is of high water cut. The design concept of the separator is increasing the number of opening every layer and aperture gradually in subsection from up to down in the design process. The purpose is to get the close intake quantity of every orifice and guarantee the residence time is long enough in the separator, effectively shorten the length of down hole oil-water separator and reduce the production costs and operating costs.

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25

Maj, G., M. Laurent, M. Mastrangeli, and Y. Lecoffre. "TURBYLEC: DEVELOPMENT AND EXPERIMENTAL VALIDATION OF AN INNOVATIVE CENTRIFUGAL OIL – WATER SEPARATOR." International Oil Spill Conference Proceedings 2014, no. 1 (May 1, 2014): 634–48. http://dx.doi.org/10.7901/2169-3358-2014.1.634.

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ABSTRACT An innovative oil/water separator (TURBYLEC) has been developed in the frame of the HOVERSPILLTM European project (Fast Air Cushion platform for Oil Spill Remediation), partly funded by the European Commission's 7th Framework Program. Conventional separation solutions are not appropriate to the remediation scenarios targeted by the HOVERSPILLTM project, mainly because low weight and compactness are absolutely required for transportation on a hovercraft. Namely, high separation efficiency, imposed to satisfy environmental legislation for water release, is particularly difficult to achieve with a compact separator when skimmed flow rate, oil content and density contrast are submitted to large variations. This paper describes the development of a customized patented centrifuge separator devoted to the specific needs of the HOVERSPILLTM project. Conceptual studies, prototype manufacturing and experimental validation are described. The TURBYLEC prototype tested at CEDRE's facilities has a bulk (size and weight) compatible with its integration on the HOVERSPILLTM platform. Tests results show that TURBYLEC matches with expected use (i.e. downstream of a non-selective skimmer). In this configuration, TURBYLEC separator shows very good oil / water separation performances for inlet oil contents up to 25%. In this range of operating conditions its cut diameter has been evaluated to 60 μm. In order to achieve the same separation performances as with TURBYLEC, which weighs only 70 kg (with liquids), it would be necessary to install an 8 m3 gravity separator. TURBYLEC separator has been developed for a very specific duty (i.e. for integration on an Hovercraft for Oil Spill remediation). Nevertheless, its proven performances render it particularly attractive, as a standalone system, for many other specific tasks in the field of oil spill remediation. It could also interest various other water treatment applications.

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26

Gaaseidnes, Knut, and Joseph Turbeville. "Separation of Oil and Water in Oil Spill Recovery Operations." Pure and Applied Chemistry 71, no. 1 (January 1, 1999): 95–101. http://dx.doi.org/10.1351/pac199971010095.

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The separation of water from oil that is collected in any oil spill recovery operation is a continuing and necessary requirement during every stage of the effort. Its importance is reflected in the cost of transport and storage of large volumes of oily water, the salvage value of separated oil and the added labor costs associated with long-term recovery operations.This paper addresses the effects of weathering and emulsion generation which increase the problems normally associated with water extraction. Separation theory, practical separation technology and recommendations for the future direction of research and development are presented.

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27

Xu, Hongxiang, Jiongtian Liu, Xiaobing Li, Chunjuan Zhang, and Yongtian Wang. "The effect of bubble size on oil-water separation efficiency for a novel oil-water separation column." Separation Science and Technology 51, no. 1 (July 7, 2015): 41–48. http://dx.doi.org/10.1080/01496395.2015.1063653.

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28

Xu, Chang-Lian, and Yu-Zhong Wang. "Novel dual superlyophobic materials in water–oil systems: under oil magneto-fluid transportation and oil–water separation." Journal of Materials Chemistry A 6, no. 7 (2018): 2935–41. http://dx.doi.org/10.1039/c7ta10739k.

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29

Dmitriev, Andrey, Vadim Zinurov, Dang Vinh, and Oksana Dmitrieva. "Removal of moisture from contaminated transformer oil in rectangular separators." E3S Web of Conferences 110 (2019): 01026. http://dx.doi.org/10.1051/e3sconf/201911001026.

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This paper deals with the removal of moisture from the contaminated transformer oil. Design of a rectangular separator and the results of water-oil emulsion separation are shown in this paper. The influence of different values of the separator height and the distance between the rows of elements on the emulsion separation efficiency was studied. In order to calculate the process of removing the moisture from transformer insulating oil, the multiphase Eulerian-Eulerian model “Volume of Fluid” with the number of phases equal to 2 was applied in ANSYS Fluent software package. K–ε turbulence model was used for the calculations. The results were obtained while solving the nonstationary issue. In the course of numerical simulation, the object of study was the transformer oil T-1500U, containing some water amount. The results of numerical simulation of water-oil emulsion separation in a rectangular separator are shown. In the course of numerical studies, it was found that the use of a rectangular separator in order to remove the moisture from transformer oil allows it to be purified from water by 99.99%, providing that the geometrical dimensions of device are chosen correctly. The use of developed rectangular separator can be an alternative to the use of decanting tanks, various separators and other purification devices, which have extremely low rate of purification of contaminated spent oils. This separator allows purifying the transformer oil from water with a speed of 1-2 m/s while the efficiency is equal to 99.99%.

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Zhang, Xiaojun, Yun Cheng, Songlin Nie, Hui Ji, and Laiguo Liu. "Simulation of Multiphase Flow of the Oil-Water Separation in a Rotating Packed Bed for Oil Purification." Mathematical Problems in Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/404327.

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HIGEE (High Gravity Rotary Device) rotating oil purifier which consists of two parts: hydrocyclone separator and rotating packed bed (abbr. RPB) is considered to be capable of removing the solid particle contaminant, moisture and gas simultaneously. As the major unit of HIGEE, the RPB uses centrifugal force to intensify mass transfer. Because of the special structure of RPB, the hydraulic characteristics of the RPB are very important. In this study, the multiphase flow model in porous media of the RPB is presented, and the dynamical oil-water separation in the RPB is simulated using a commercial computational fluid dynamics code. The operating conditions and configuration on the hydraulic performance of the RPB are investigated. The results have indicated that the separation efficiency of HIGEE rotating oil purifier is predominantly affected by operating conditions and the configurations. The best inlet pressure is 0.002 MPa. When the liquid inlet is placed in the outside of the lower surface of RPB; oil outlet is placed in the upper surface, where it is near the rotation axis; and water outlet is placed in the middle of the RPB, where it is far away from the oil outlet, the separating efficiency is the best.

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31

Bhushan, Bharat. "Bioinspired oil–water separation approaches for oil spill clean-up and water purification." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2150 (June 10, 2019): 20190120. http://dx.doi.org/10.1098/rsta.2019.0120.

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Water contamination is one of the major environmental and natural resource concerns in the twenty-first century. Oil contamination can occur during operation of machinery, oil exploration and transportation, and due to operating environment. Oil spills occasionally occur during oil exploration and transportation. Water contamination with various chemicals is a major concern with growing population and unsafe industrial practices of waste disposal. Commonly used oil–water separation techniques are either time consuming, energy intensive and/or environmentally unfriendly. Bioinspired superhydrophobic/superoleophobic and superoleophobic/superhydrophilic surfaces have been developed which are sustainable and environmentally friendly. Bioinspired oil–water separation techniques can be used to remove oil contaminants from both immiscible oil–water mixtures and oil–water emulsions. Coated porous surfaces with an affinity to water and repellency to oil and vice versa are commonly used. The former combination of affinity to water and repellency to oil is preferred to avoid oil contamination of the porous substrate. Oil–water emulsions require porous materials with a fine pore size. Recommended porous materials include steel mesh and cotton fabric for immiscible oil–water mixtures and cotton for oil–water emulsions. A review of various approaches is presented in this paper. This article is part of the theme issue ‘Bioinspired materials and surfaces for green science and technology (part 2)’.

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Lee, Chee Huei, Bishnu Tiwari, Dongyan Zhang, and Yoke Khin Yap. "Water purification: oil–water separation by nanotechnology and environmental concerns." Environmental Science: Nano 4, no. 3 (2017): 514–25. http://dx.doi.org/10.1039/c6en00505e.

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Organic pollutants from synthetic organic compounds (SOCs) and oil spills have led to significant water contamination. This article review the progress of oil–water separation using nanotechnology and the concern of water contamination by nanomaterials.

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Madyshev, I. N., V. E. Zinurov, A. V. Dmitriev, Xuan Vinh Dang, and G. R. Badretdinova. "Investigation of outlet diameter effect on emulsion separation efficiency in rectangular separators." Proceedings of Irkutsk State Technical University 24, no. 6 (January 13, 2021): 1232–42. http://dx.doi.org/10.21285/1814-3520-2020-6-1232-1242.

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The purpose of the study is to conduct experimental studies of oil -water emulsion separation in a rectangular separator in the range of velocities along the device working area from 1.43 to 2.5 m/s. The efficiency of emulsion separation is determined by an experimental method based on measuring the density of a two-phase liquid, provided that the density of each component of the mixture is previously determined. The authors propose to use a device with U-shaped elements to increase its performance when separating oil-water emulsions. The device under study including two rows of U-shaped elements consists of one complete separation stage. The authors have conducted experimental studies of the device with U-shaped elements on the "oil-water" system, during which the efficiency of emulsion separation was evaluated. It was detemined that the proposed device provides the highest efficiency of emulsion separation of 68% when the diameter of the holes intended for the exit of the heavy phase equals to 2.5 mm in the range of emulsion velocities from 1.43 to 2.5 m/s. The conducted experimental studies will allow to use a turbulence model for calculation in the programs like Ansys Fluent or FlowVision, which will most adequately describe the separation process of similar emulsions. The experiments have proved the possibility of obtaining high values of efficiency. Therefore, the correct selection of technological parameters (average flow rate, concentration) and the size of the characteristic elements of the proposed device will allow to specify the design of a rectangular separator, for example, to calculate the number of stages to achieve the required separation efficiency or to determine the size of the separation elements.

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Yong, Jiale, Jinglan Huo, Feng Chen, Qing Yang, and Xun Hou. "Oil/water separation based on natural materials with super-wettability: recent advances." Physical Chemistry Chemical Physics 20, no. 39 (2018): 25140–63. http://dx.doi.org/10.1039/c8cp04009e.

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Das, S. K., and M. N. Biswas. "Separation of oil-water mixture in tank." Chemical Engineering Communications 190, no. 1 (January 2003): 116–27. http://dx.doi.org/10.1080/00986440302095.

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Anderson, G. K., C. B. Saw, and M. S. Le. "Oil/Water separation with surface modified membranes." Environmental Technology Letters 8, no. 1-12 (January 1987): 121–32. http://dx.doi.org/10.1080/09593338709384470.

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Si, Yifan, and Zhiguang Guo. "Superwetting Materials of Oil–Water Emulsion Separation." Chemistry Letters 44, no. 7 (July 5, 2015): 874–83. http://dx.doi.org/10.1246/cl.150223.

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Park, Eugene, and Stanley M. Barnett. "OIL/WATER SEPARATION USING NANOFILTRATION MEMBRANE TECHNOLOGY." Separation Science and Technology 36, no. 7 (May 31, 2001): 1527–42. http://dx.doi.org/10.1081/ss-100103886.

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Wei, Yibin, Hong Qi, Xiao Gong, and Shuaifei Zhao. "Specially Wettable Membranes for Oil–Water Separation." Advanced Materials Interfaces 5, no. 23 (September 27, 2018): 1800576. http://dx.doi.org/10.1002/admi.201800576.

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Kwon, Gibum, Arun K. Kota, Yongxin Li, Ameya Sohani, Joseph M. Mabry, and Anish Tuteja. "On-Demand Separation of Oil-Water Mixtures." Advanced Materials 24, no. 27 (June 12, 2012): 3666–71. http://dx.doi.org/10.1002/adma.201201364.

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Xue, Zhongxin, Yingze Cao, Na Liu, Lin Feng, and Lei Jiang. "Special wettable materials for oil/water separation." J. Mater. Chem. A 2, no. 8 (2014): 2445–60. http://dx.doi.org/10.1039/c3ta13397d.

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Cai, Wen-Bin, and Bo-Hong Liu. "A new submarine oil-water separation system." IOP Conference Series: Earth and Environmental Science 100 (December 2017): 012115. http://dx.doi.org/10.1088/1755-1315/100/1/012115.

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Wang, Ben, and Zhiguang Guo. "pH-responsive bidirectional oil–water separation material." Chemical Communications 49, no. 82 (2013): 9416. http://dx.doi.org/10.1039/c3cc45566a.

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Abdel-Fattah, Amr I. "Acoustic Downhole Oil/Water/Fines Separation (ADOWFS)." SPE Production & Operations 33, no. 04 (November 1, 2018): 829–36. http://dx.doi.org/10.2118/183265-pa.

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Thakur, Kirti, Aditya Rajhans, and Balasubramanian Kandasubramanian. "Starch/PVA hydrogels for oil/water separation." Environmental Science and Pollution Research 26, no. 31 (September 6, 2019): 32013–28. http://dx.doi.org/10.1007/s11356-019-06327-z.

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Braga, E. R., W. K. Huziwara, W. P. Martignoni, C. M. Scheid, and R. A. Medronho. "IMPROVING HYDROCYCLONE GEOMETRY FOR OIL/WATER SEPARATION." Brazilian Journal of Petroleum and Gas 9, no. 3 (October 7, 2015): 115–23. http://dx.doi.org/10.5419/bjpg2015-0012.

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Lee, Byunghee, and Rajkumar Patel. "Review on Oil/Water Separation Membrane Technology." Membrane Journal 30, no. 6 (December 30, 2020): 359–72. http://dx.doi.org/10.14579/membrane_journal.2020.30.6.359.

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Dunderdale, Gary J., Matt W. England, Tomoya Sato, Chihiro Urata, and Atsushi Hozumi. "Programmable Oil/Water Separation Meshes: Water or Oil Selectivity Using Contact Angle Hysteresis." Macromolecular Materials and Engineering 301, no. 9 (June 8, 2016): 1032–36. http://dx.doi.org/10.1002/mame.201600061.

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Liao, Xiao-Hua, Shen-Jun Yang, Ming-Wei Qin, Ming-Yuan Dou, Qing Feng, Hao-Ming Li, and Shuai Zou. "Overview of Oil-water Separation Equipment Technology of Refined Oil." IOP Conference Series: Earth and Environmental Science 508 (July 1, 2020): 012131. http://dx.doi.org/10.1088/1755-1315/508/1/012131.

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Zhang, Fu Lun, Song Sheng Deng, and Pan Feng Zhang. "Numerical Study of Oil-Water Two Phase Separation in Hydrocyclone." Advanced Materials Research 339 (September 2011): 543–46. http://dx.doi.org/10.4028/www.scientific.net/amr.339.543.

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This paper presents a numerical study of the oil-water two phase flow in hydrocyclone. Oil-water two phase separation was simulated by using Reynolds Stress Model and Mixer model of multi-phase models. The oil-water separation process, oil-phase volume fraction distribution, and trajectory about the water-oil two phase liquid flowing within hydrocyclone were obtained. The study show that the separation of water-oil two phases is mainly in the swirl-chamber and cone section in hydrocyclone, however, the cylindrical section plays an inessential role in stabilizing the flow field during separation process.

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