Surface properties of cellulose nanocrystal stabilized crude oil emulsions and their effect on petroleum biodegradation

Parajuli, Sanjiv; Alazzam, Omayma; Wang, Mei; Mota, Linda C.; Adhikari, Sangeet; Wicks, Dariel; Ureña-Benavides, Esteban E.

doi:10.1016/j.colsurfa.2020.124705

Cited by 18 publications

(13 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the results indicated that the droplet size in the CNF emulsion was increased significantly. Parajuli et al 72 utilized CNC without surfactants added to increase the oil/water interface area of crude oil and improve the biodegradability of crude oil through emulsification. The results showed that with salinity and divalent ions, the concentration and physicochemical properties of CNC also had certain effects on the stability and biodegradability of the emulsion.…”

Section: Nanocellulose-stabilized Emulsionmentioning

confidence: 99%

“…Resistance to emulsion creaming: (a) effect of CNC concentration in API brine, (b) effect of divalent cations at 0.8 wt % CNC, and (c) effect of ionic strength at 0.8 wt % CNC. Pictures in the bottom panels (d) and (e) are representative samples of emulsions immediately after emulsification and after 24 h . Reprinted (adapted or reprinted in part) with permission from Parajuli, S.; Alazzam, O.; Wang, M.; Mota, L. C.; et al .…”

Section: Application Of Nanocellulose In Oilfield Chemistrymentioning

confidence: 99%

See 1 more Smart Citation

Application of Nanocellulose in Oilfield Chemistry

et al. 2021

View full text Add to dashboard Cite

The preparation and classification of nanocellulose are briefly introduced, and the modification of nanocellulose and the application of modified nanocellulose in oilfield chemistry are reviewed. The principles and methods of surface modification, including surface adsorption, oxidation, acetylation, silanization, etherification, and polymer grafting, are summarized. Meanwhile, this paper focuses on the application of nanocellulose research progress in drilling fluid, enhanced oil recovery, and oilfield sewage treatment. In addition, the application issues and natural advantages of nanocellulose are analyzed, and suggestions and ideas on how to expand its application are put forward. Finally, the development and potential application of nanocellulose in oilfield chemistry are proposed.

show abstract

Section: Nanocellulose-stabilized Emulsionmentioning

confidence: 99%

Section: Application Of Nanocellulose In Oilfield Chemistrymentioning

confidence: 99%

Application of Nanocellulose in Oilfield Chemistry

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The experiments also corroborated expected trends established in the literature, such as an increased stability at higher salt concentrations and at higher NP content [ 30 , 55 , 56 ]. However, deviations from such a behavior have been observed in systems at ionic strengths of 0.65 M and above [ 5 , 57 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of the Interactions between Oppositely Charged Cellulose Nanocrystals (CNCs) and Chitin Nanocrystals (ChNCs) on the Enhanced Stability of Soybean Oil-in-Water Emulsions

2022

Self Cite

View full text Add to dashboard Cite

Chitin nanocrystals (ChNCs) and cellulose nanocrystals (CNCs) have been recently used to stabilize emulsions; however, they generally require significant amounts of salt, limiting their applicability in food products. In this study, we developed nanoconjugates by mixing positively charged ChNCs and negatively charged CNCs at various ChNC:CNC mass ratios (2:1, 1:1, and 1:2), and utilized them in stabilizing soybean oil–water Pickering emulsions with minimal use of NaCl salt (20 mM) and nanoparticle (NP) concentrations below 1 wt%. The nanoconjugates stabilized the emulsions better than individual CNC or ChNC in terms of a reduced drop growth and less creaming. Oppositely charged CNC and ChNC neutralized each other when their mass ratio was 1:1, leading to significant flocculation in the absence of salt at pH 6. Raman spectroscopy provided evidence for electrostatic interactions between the ChNCs and CNCs, and generated maps suggesting an assembly of ChNC bundles of micron-scale lengths intercalated by similar-size areas predominantly composed of CNC. The previous measurements, in combination with contact angles on nanoparticle films, suggested that the conjugates preferentially exposed the hydrophobic crystalline planes of CNCs and ChNCs at a 1:1 mass ratio, which was also the best ratio at stabilizing soybean oil–water Pickering emulsions.

show abstract

“…The dimensions (length = 130.3 ± 41.5 nm, height = 6.3 ± 1.8 nm) and characteristics of the nanocrystals used are detailed in our earlier publication. 29 Reagent grade heptane (99.8%), perfluorooctane (99.9%), dodecyltrimethylammonium bromide (DTAB, ≥ 90%), calcium chloride dihydrate (CaCl 2 •2H 2 O, 99.8%), and sodium chloride (NaCl, ≥99%) were purchased from Sigma-Aldrich (St. Louis MO) and used as received. Carbon dioxide (≥99% purity, <50 ppm moisture) was purchased from Airgas USA LLC (Tupelo MS) and was used as received.…”

Section: Methodsmentioning

confidence: 99%

“…The CNC (11.5 wt %), prepared from Pinus strobus (Northern pine) wood pulp, made by the USDA Forest Products Laboratory and distributed by The University of Maine, was used as received. The dimensions (length = 130.3 ± 41.5 nm, height = 6.3 ± 1.8 nm) and characteristics of the nanocrystals used are detailed in our earlier publication . Reagent grade heptane (99.8%), perfluorooctane (99.9%), dodecyltrimethylammonium bromide (DTAB, ≥ 90%), calcium chloride dihydrate (CaCl 2 ·2H 2 O, 99.8%), and sodium chloride (NaCl, ≥99%) were purchased from Sigma-Aldrich (St. Louis MO) and used as received.…”

Section: Methodsmentioning

confidence: 99%

Cellulose Nanocrystal-Stabilized Dispersions of CO₂, Heptane, and Perfluorooctane at Elevated Temperatures and Pressures for Underground CO₂Sequestration

Parajuli

Prater

Heath

et al. 2020

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

Stable liquid carbon dioxide (CO2) emulsions and supercritical CO2 foams, stabilized by cellulose nanocrystal (CNC), were prepared at ambient temperature and underground reservoir conditions (T = 343 K; P = 20.7 MPa) in American Petroleum Institute (API) brine. Emulsions and foams prepared with CNC only were resistant to creaming and foam drainage and macroscopic coalescence over 24 h. On the contrary, emulsions prepared using a combination of CNC and dodecyltrimethylammonium bromide (DTAB) creamed at 298 K, and macroscopic bubble coarsening was observed at 343 K. The interfacial tension (γow) between CO2 and CNC suspensions decreased with increased CO2 pressure at both temperatures. Foams and emulsions containing DTAB had larger initial viscosities yet lower stability over a period of 24 h. Thus, reduced CO2 mobility during injection may not be indicative of longer-term foam stability for geological carbon sequestration projects. Ambient condition emulsions with heptane and perfluorooctane (PFO), as model compounds, showed that the less polar PFO could not be emulsified, while heptane formed stable emulsions at 298 and 343 K. The results suggest that polarity is a highly significant factor contributing to emulsion stability. This paper reports the first CNC-stabilized CO2 foam in reservoir conditions, with the potential for geological greenhouse gas sequestration.

show abstract

Surface properties of cellulose nanocrystal stabilized crude oil emulsions and their effect on petroleum biodegradation

Cited by 18 publications

References 48 publications

Application of Nanocellulose in Oilfield Chemistry

Application of Nanocellulose in Oilfield Chemistry

Effect of the Interactions between Oppositely Charged Cellulose Nanocrystals (CNCs) and Chitin Nanocrystals (ChNCs) on the Enhanced Stability of Soybean Oil-in-Water Emulsions

Cellulose Nanocrystal-Stabilized Dispersions of CO₂, Heptane, and Perfluorooctane at Elevated Temperatures and Pressures for Underground CO₂Sequestration

Contact Info

Product

Resources

About

Surface properties of cellulose nanocrystal stabilized crude oil emulsions and their effect on petroleum biodegradation

Cited by 18 publications

References 48 publications

Application of Nanocellulose in Oilfield Chemistry

Application of Nanocellulose in Oilfield Chemistry

Effect of the Interactions between Oppositely Charged Cellulose Nanocrystals (CNCs) and Chitin Nanocrystals (ChNCs) on the Enhanced Stability of Soybean Oil-in-Water Emulsions

Cellulose Nanocrystal-Stabilized Dispersions of CO2, Heptane, and Perfluorooctane at Elevated Temperatures and Pressures for Underground CO2Sequestration

Contact Info

Product

Resources

About

Cellulose Nanocrystal-Stabilized Dispersions of CO₂, Heptane, and Perfluorooctane at Elevated Temperatures and Pressures for Underground CO₂Sequestration