Photothermal Bio-Based Membrane Via Integrated Strategies of Spectrum-Narrowing and Dual H-Bonding Networks for Seawater Treatment and Super-Viscous Crude Oil Adsorption

2021 ◽  
Author(s):  
Zechang Wei ◽  
Chenyang Cai ◽  
Yangze Huang ◽  
Yu Fu
Keyword(s):  
Crude Oil ◽  
Integrated Strategies ◽  
Oil Adsorption ◽  
Seawater Treatment

scholarly journals The role of polar organic components in dynamic crude oil adsorption on sandstones and carbonates

2020 ◽  
Vol 10 (2) ◽  
pp. 5-16
Author(s):  
Iván Darío Piñerez Torrijos ◽  
Aleksandr Mamonov ◽  
Skule Strand ◽  
Tina Puntervold
Keyword(s):  
Crude Oil ◽  
Spontaneous Imbibition ◽  
Successful Implementation ◽  
Mineral Surfaces ◽  
Substantial Impact ◽  
Polar Components ◽  
Organic Components ◽  
Oil Adsorption ◽  
Oil Injection

An appropriated wettability characterization is crucial for the successful implementation of waterflooding operations. Understanding how crude oil adsorption takes place on different mineral surfaces and how these processes impact reservoir wettability are essential aspects that can help unlock and produce large underground oil reserves. Polar organic components (POC) present in crude oil are surface-active molecules with high affinity towards mineral surfaces. POCs are quantified by the acid and base numbers (AN and BN) with units of mgKOH/g. The POC adsorption behavior is highly influenced by the type of minerals and brines present in the reservoir system. This study aims to shed light onto the most important features of oil adsorption on carbonates and sandstones mineral surfaces; particular attention is given to the role of acidic components. Therefore, outcrop sandstone and carbonate materials were used. The sandstone material contains various silicates, including quartz, Illite clay, and feldspars. The carbonate outcrop material came from the Stevns Klint quarry in Denmark and is considered a very pure calcium carbonate with minimum silicate impurities. Dynamic adsorption tests were performed at 50°C by injecting low asphaltene crude oils into core plugs, and AN and BN values of the effluent oil samples were measured and compared with the influent oil values. Furthermore, spontaneous imbibition (SI) tests were performed to assess the wettability impact of crude oil injection in oil flooded cores. The results showed that after crude oil injection, the cores became mix-wet. Confirmation of a reduction in capillary forces and a shift towards a less water-wet state was reported for both mineralogies, i.e., sandstones and carbonates. The acidic polar components had a substantial impact on carbonates wettability, while on sandstones, the experiments suggested that acidic polar components had a lower impact on wettability than that observed in the basic polar components.

scholarly journals Adsorptive Recovery of Crude Oil Microdroplets from Wastewater Using Surface Engineered Sponges

2019 ◽  
Author(s):  
Pavani Cherukupally ◽  
Wei Sun ◽  
Anabelle P.Y. Wong ◽  
Daryl R. Williams ◽  
Geoffrey A. Ozin ◽  
...  
Keyword(s):  
Surface Energy ◽  
Crude Oil ◽  
Oil Recovery ◽  
Oil Industry ◽  
Ambient Conditions ◽  
Recovery Method ◽  
The Us ◽  
Adsorptive Recovery ◽  
Oil Adsorption ◽  
Ph Conditions

In the US, the oil industry produces over 15 billion barrels of wastewater contaminated with crude oil microdroplets annually. Current technologies are unable to remove these microdroplets at different pH conditions. Herein, an innovative surface engineered sponge (SenS) was designed by combining surface chemistry, surface charge, roughness, and surface energy. Under all pH conditions, the SEnS rapidly adsorbed oil microdroplets with 95-99% removal efficiency. The adsorbed oil was recovered at ambient conditions while the cleaned SEnS was reused for five times for crude oil adsorption. Due to the process efficacy, sponge reuse, and oil recovery, this adsorptive-recovery method using SEnS demonstrates great potential for the industrial recovery of oil from wastewater.

scholarly journals Removal of oil spills by novel developed amphiphilic chitosan-g-citronellal schiff base polymer

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ahmed Mohamed Omer ◽  
Basant Yossry Eweida ◽  
Tamer Mahmoud Tamer ◽  
Hesham M. A. Soliman ◽  
Safaa Mohamed Ali ◽  
...  
Keyword(s):  
Schiff Base ◽  
Crude Oil ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Oil Spills ◽  
Sea Water ◽  
Morphological Changes ◽  
Operational Conditions ◽  
Bet Analysis ◽  
Oil Adsorption

AbstractA novel chitosan grafted citronellal (Ch-Cit) schiff base amphiphilic polymer was developed for the adsorptive removal of oil spills. The chemical structure was verified by FT-IR spectroscopy and 1H NMR spectrometer, while the morphological changes and surface area were investigated by SEM and BET analysis tools. The amphiphilic character of Ch-Cit schiff base was controlled through variation of the grafting percentage (G%) of citronellal from 11 to 61%. Dramatic changes in the ion exchange capacity (IEC), solubility and water uptake profiles were established, while the oil adsorption capacity was founded in direct relation with the G (%) of citronellal. Operational conditions such as oil amount, adsorption time, adsorbent dose and agitation speed were investigated. The developed Ch-Cit schiff base exhibited a higher surface area (115.94 m2/g) compared to neat chitosan (57.78 m2/g). The oil adsorption capacity of the Ch-Cit schiff base was greatly improved by 166% and 120% for light crude and heavy crude oil, respectively. Finally, the adsorption process was optimized using response surface methodology (RSM).The results substantiate that the amphiphilic Ch-Cit schiff base could be efficiently applied as a low-cost oil-adsorbent for the removal of crude oil spills from sea-water surfaces.

scholarly journals Adsorptive Recovery of Crude Oil Microdroplets from Wastewater Using Surface Engineered Sponges

2019 ◽  
Author(s):  
Pavani Cherukupally ◽  
Wei Sun ◽  
Anabelle P.Y. Wong ◽  
Daryl R. Williams ◽  
Geoffrey A. Ozin ◽  
...  
Keyword(s):  
Surface Energy ◽  
Crude Oil ◽  
Oil Recovery ◽  
Oil Industry ◽  
Ambient Conditions ◽  
Recovery Method ◽  
The Us ◽  
Adsorptive Recovery ◽  
Oil Adsorption ◽  
Ph Conditions

In the US, the oil industry produces over 15 billion barrels of wastewater contaminated with crude oil microdroplets annually. Current technologies are unable to remove these microdroplets at different pH conditions. Herein, an innovative surface engineered sponge (SenS) was designed by combining surface chemistry, surface charge, roughness, and surface energy. Under all pH conditions, the SEnS rapidly adsorbed oil microdroplets with 95-99% removal efficiency. The adsorbed oil was recovered at ambient conditions while the cleaned SEnS was reused for five times for crude oil adsorption. Due to the process efficacy, sponge reuse, and oil recovery, this adsorptive-recovery method using SEnS demonstrates great potential for the industrial recovery of oil from wastewater.

scholarly journals Utilization of Annona senegalensis as a Sorbent for THE Removal of Crude Oil from Aqueous Media

2021 ◽  
pp. 68-82
Author(s):  
B. J. Dimas ◽  
S. A. Osemeahon
Keyword(s):  
Crude Oil ◽  
Sorption Capacity ◽  
Aqueous Media ◽  
Correlation Coefficients ◽  
Oil Sorption ◽  
Oil Concentration ◽  
Oil Adsorption ◽  
Oil Spill Cleanup ◽  
Kinetics Of ◽  
Sorbent Weight

In the present study, the efficiency of Annona senegalensis fiber to remove crude oil from aqueous solution was evaluated. The crude Annona senegalensis (CAS), retted Annona senegalensis (RAS) and bleach Annona senegalensis (PFAS) were subjected to sorption studies to optimize their sorption capacity. The results revealed that the efficiency of sorbent to remove crude oil from water is related to the sorbent weight, contact time, initial oil concentration and temperature of sorption. It was found out that increase in sorbent weight led to increase in sorption capacity from 3.99-5.25g/g, 5.51-7.12g/g, and 5.01-6.72g/g in CAS, RAS and PFAS respectively. Increased in Initial oil concentration also increased the oil sorption capacity by 20-21% until it reach equilibrium. Sorption time was varied from 10, 20, 30, 40, 50, 60 and 70 minutes and the highest sorption capacity was recorded at 30 minutes before a gradual decreased was observed. Sorption capacity decreased with increased in temperature above 400C. The sorbent exhibited good reusability after 8 cycles, with less than 50 % reduction in sorption capacity. The kinetics of crude oil sorption onto CAS, RAS and PFAS follow the second- order model with correlation coefficients higher than 0.99. The results obtained revealed that crude oil adsorption onto the Annona senegalensis fiber can be used as an effective adsorbent to oil spill cleanup in water bodies.

Study of Roasting Fe2O3/EPDM to Remove Crude Oil in Water

2011 ◽  
Vol 347-353 ◽  
pp. 2058-2061
Author(s):  
Xiu Qi Liu ◽  
He Qin Xing
Keyword(s):  
Crude Oil ◽  
Experimental Result ◽  
Melt Blending ◽  
Oil Absorbency ◽  
Three Samples ◽  
Oil In Water ◽  
The Matrix ◽  
Oil Adsorption

In our study, a new kind of material for oil adsorption was prepared by melt blending with EPDM as the matrix and roasting Fe2O3as the filler. The effects of dicumylperoxide (DCP) and roasting Fe2O3contents on the oil absorbency were studied. The results show that the oil absorbency reaches the highest value for the roasting Fe2O3/EPDM composite with 2 wt % DCP and 30 wt % roasting Fe2O3. Comparing the oil absorbency for three samples, the experimental result indicates that the oil absorbency of roasting Fe2O3/EPDM composite is higher than that of EPDM (crosslinked) and EPDM.

Crude Oil Adsorption on Fe2O3/EPDM Composite to the outside Environmental Variations

2011 ◽  
Vol 415-417 ◽  
pp. 191-193
Author(s):  
Xiu Qi Liu ◽  
He Qin Xing
Keyword(s):  
Crude Oil ◽  
Adsorption Capacity ◽  
Room Temperature ◽  
Melt Blending ◽  
Optimum Temperature ◽  
Adsorption Time ◽  
The Matrix ◽  
Environmental Variations ◽  
Oil Adsorption ◽  
Influence Of Ph

In our study, a new kind of material for oil adsorption was prepared by melt blending with EPDM as the matrix and roasting Fe2O3as the filler. By considering the influence of pH, temperature, stirring speed on adsorption capacity. The results showed that the environmental pH has little effect on the crude oil absorbency of the composite; “Room temperature” is the optimum temperature; increased the stirring speed can reduce the adsorption time.

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