scholarly journals Fluorescence imaging methodology for oil‐in‐water concentration measurements

2021 ◽  
Author(s):  
Jessica Köpplin ◽  
Lena Bednarz ◽  
Thomas Hagemeier ◽  
Dominique Thévenin
Keyword(s):  
Fluorescence Imaging ◽  
Water Concentration ◽  
Oil In Water ◽  
Imaging Methodology ◽  
Concentration Measurements

Stimuli-responsive flexible Lewis pair-modified nanoparticles for fluorescence imaging

2020 ◽  
Vol 56 (44) ◽  
pp. 5981-5984
Author(s):  
Nicole E. Arsenault ◽  
Kathleen T. Downey ◽  
Michael O. Wolf
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Fluorescence Imaging ◽  
Mesoporous Silica Nanoparticles ◽  
Water Concentration ◽  
Stimuli Responsive ◽  
Biologically Relevant

Environment-responsive fluorophores are attached to mesoporous silica nanoparticles that can be used for sensing water concentration around biologically-relevant substrates.

scholarly journals Dynamic Oil-in-Water Concentration Acquisition on a Pilot-Scaled Offshore Water-Oil Separation Facility

Sensors ◽  
2017 ◽  
Vol 17 (12) ◽  
pp. 124 ◽  
Author(s):  
Petar Durdevic ◽  
Chitra Raju ◽  
Mads Bram ◽  
Dennis Hansen ◽  
Zhenyu Yang
Keyword(s):  
Water Concentration ◽  
Offshore Water ◽  
Oil Separation ◽  
Oil In Water

Performance of liquid–liquid hydrocyclone (LLHC) for treating produced water from surfactant flooding produced water

2019 ◽  
Vol 17 (2) ◽  
pp. 215-222 ◽  
Author(s):  
Ku Esyra Hani Ku Ishak ◽  
Mohammed Abdalla Ayoub
Keyword(s):  
Oil Recovery ◽  
Design Methodology ◽  
Produced Water ◽  
Water Concentration ◽  
Current Control ◽  
Content Type ◽  
Split Ratio ◽  
Oil In Water ◽  
Actual Range ◽  
Oil Concentration

Purpose The purpose of this study is to investigate the performance of the fabricated liquid–liquid hydrocyclone (LLHC) with dimensions similar to those of one of the Malaysian oilfields with the presence of an anionic surfactant, S672. The effect of salinity and initial oil concentration were also investigated following the actual range concentration. Design/methodology/approach The current control system’s pressure drop ratio (PDR) does not necessarily lead to an efficient LLHC. Therefore, rather than using the PDR, the efficiency of the LLHC was analyzed by comparing the concentration of oil in the effluents with the concentration of oil at the feed of the LLHC. An LLHC test rig was developed at Centre of Enhanced Oil Recovery, Universiti Teknologi PETRONAS. Emulsions were prepared by mixing the brines, S672 and oil by using Ultra Turrax ultrasonic mixer. The emulsion was pumped into the LLHC at different feed flowrate and split ratio. The brines concentration, initial oil concentration and S672 concentration were also varied in this study. Samples were taken at the underflow of the LLHC and the oil in water concentration analysis was done for the samples using TD-500D equipment. Findings It was found that the efficiency of oil removal decreased with an increase in S672 concentration but increased with the increase in salinity and initial oil concentration. Originality/value The optimum feed flowrate for the LLHC of 45 mm diameter and length of 1,125 mm with the presence of S672 surfactant was found to be 40 L/min with a split ratio of 14%. This study can be used as a guidance for future optimization of the LLHC in the presence of the surfactant.

Temperature and water concentration measurements in combustion gases using a DFB diode laser at 1.4 μm

Laser Physics ◽  
2008 ◽  
Vol 18 (10) ◽  
pp. 1133-1142 ◽  
Author(s):  
T. Cai ◽  
G. Wang ◽  
H. Jia ◽  
W. Chen ◽  
X. Gao
Keyword(s):  
Diode Laser ◽  
Water Concentration ◽  
Combustion Gases ◽  
Concentration Measurements

Opto-thermal radiometry and condenser-chamber method for stratum corneum water concentration measurements

2007 ◽  
Vol 86 (4) ◽  
pp. 715-719 ◽  
Author(s):  
P. Xiao ◽  
H. Packham ◽  
X. Zheng ◽  
H. Singh ◽  
C. Elliott ◽  
...  
Keyword(s):  
Stratum Corneum ◽  
Water Concentration ◽  
Chamber Method ◽  
Concentration Measurements

Reviewing Cyclonic Low-Shear Choke and Control Valve Field Experiences

2021 ◽  
pp. 1-16
Author(s):  
Trygve Husveg ◽  
Rune Husveg ◽  
Niels van Teeffelen ◽  
Robert Verwey ◽  
Peter Guinee
Keyword(s):  
Produced Water ◽  
Separation Efficiency ◽  
Environmental Influence ◽  
Water Concentration ◽  
Control Valve ◽  
Third Party ◽  
Control Valves ◽  
Oil In Water ◽  
And Control ◽  
Low Shear

Summary In hydrocarbon production and processing, choke and control valves mix and emulsify petroleum phases. The consequence is often that the efficiency of separation processes is affected and finally that the quality of oil and water phases is degraded. Over the last few years, low-shear valves targeting petroleum processes have emerged on the market. This paper presents four separate live-fluid experiences from low-shear valve installations, each surveyed and documented by an independent third party. Three of the installations refer to choke valves, whereas the fourth installation refers to a control valve. For each installation, standard choke and control valves were used as reference valves. In terms of downstream separation efficiency, the low-shear choke valves reduced oil-in-water concentrations respectively by 70, 45, and 60%, by total average. In the control valve application, the low-shear valve, which was located between the hydrocyclones and a compact flotation unit, reduced the oil-in-water concentration by 23%. In sum, the field installations have demonstrated that low-shear valves significantly and consistently reduce oil-in-water concentrations and thus improve the produced water quality. The results signify that low-shear valves may be used in debottlenecking separation and produced water treatment processes, reducing the environmental influence from produced water discharges. Because the low-shear technology enables processing of petroleum phases with less effort, energy, and chemicals, it also reduces emissions to air.

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