Adsorption behavior of hydroxypropyl guar gum onto montmorillonite and reducing adsorption in the reservoir

Yin, Zichen; Wang, Yanling; San, Jingshan

doi:10.1016/j.clay.2018.09.015

Cited by 20 publications

(10 citation statements)

References 36 publications

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“…(1) Good chelating ability toward CR. The -COOH groups of citric acid were not only used as linking groups for coating CA on RB, but also provided active adsorption sites for CR via chelation (Figure 10) (Yin et al, 2018). The chelation between -COOH on CAB and -NH 2 on CR has also been confirmed by the FT-IR results analysis.…”

Section: Adsorption Mechanism Of Cr On Acbmentioning

confidence: 74%

Citric Acid Modified Bentonite for Congo Red Adsorption

et al. 2019

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Raw bentonite (RB) was chemically modified by citric acid (CA) to obtain a low-cost and environment-friendly citric acid incorporated bentonite (CAB) adsorbent, which was applied for the adsorptive removal of Congo Red (CR). The effect of adsorbent dosage, contact time, ionic strength, surfactant, and pH on adsorption was investigated. Adsorption equilibrium data fitted well with Langmuir model while the Langmuir adsorption capacity of CR on CAB reached up to 384 mg•g −1. Furthermore, CR adsorption on CAB followed pseudo-second kinetic model while intra-particle diffusion was not the only rate-limiting step as determined from intra-particle diffusion model investigation. RB and CAB were characterized by XRD, FT-IR, and BET techniques. A proposed mechanism for the adsorption of CR over CAB suggested the chemical adsorption phenomenon is mainly controlled by chelation, hydrogen bonding, and fixing.

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Section: Adsorption Mechanism Of Cr On Acbmentioning

confidence: 74%

Citric Acid Modified Bentonite for Congo Red Adsorption

et al. 2019

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“…The standard curve of VBB had a good linear relationship, and the correlation coefficient ( R 2 = 0.9994) was greater than 0.99 (Figure a). The standard curve conformed to the Beer–Lambert law, and the standard curve equation was shown as follows: where x was the concentration of the solution (mg mL –1 ) and Y was the absorbance.…”

Section: Resultsmentioning

confidence: 99%

Simple, Rapid, and Highly Sensitive Colorimetric Sensor Strips from a Porous Cellulose Membrane Stained with Victoria Blue B for Efficient Detection of Trace Cd(II) in Water

Jiang

Luo

2020

ACS Sustainable Chem. Eng.

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Compared with traditional filter paper, a high-purity cellulose membrane prepared via a green pathway was used to enhance detection performance for cadmium ions. In this work, a simple, rapid, and highly sensitive cellulose membrane-based colorimetric sensor strip (CCSS) for efficient detection of trace Cd(II) in water has been designed. The cellulose membrane (CM) was prepared by a tape casting method. Victoria blue B (VBB) was used as an indicator and was bound in the CM matrix through intermolecular hydrogen bonds. The morphology, structure, and properties of CM and CCSS were characterized by SEM, FTIR, and BET. The detection and anti-interference performance of CCSS for cadmium ions were investigated. In addition, the design and chromogenic reaction mechanism of CCSS were also studied. The results showed that CCSS was successfully prepared. The specific surface area, pore volume, and pore size of CCSS were decreased after VBB loading. The color of the CCSS changed from yellow to blue-green after cadmium ions were added. The limit of detection (LOD) was as low as 0.01 mg L–1 with the naked eye, and the fast response time of the strip for Cd(II) was 1 min. The CCSS was successfully applied to real water samples with strong anti-interference ability.

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“…Chiappa et al found that the existence of cations had a great influence on anionic HPAM [30]. Yin et al studied the adsorption law of hydroxypropyl guanidine gum (which is kind of biopolymer) on clay minerals (kaolin and montmorillonite), and pointed out that the adsorption between hydroxypropyl guanidine gum and clay minerals was physical adsorption, and the adsorption capacity was greatly reduced in acidic conditions or in high-salt conditions [31,32].…”

Section: Ji Et Al[20] Welan Gummentioning

confidence: 99%

“…When the pH value is in the range of 3-7, the adsorption capacity increases gradually. This is because there is a large amount of H + in the acidic solution, which will affect the adsorption of welan gum on montmorillonite: the existence of H + has a competitive relationship with the welan gum, and the adsorption capacity of welan gum is reduced because of the preference of montmorillonite to H + ; with the increase in pH value, the content of H + gradually decreases, resulting in an increase in the adsorption capacity of welan gum on montmorillonite [32].…”

Section: Effect Of Ph Valuementioning

confidence: 99%

Adsorption of Welan Gum on Montmorillonite and Its Influencing Factors

Ke-jian

et al. 2022

Polymers

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Welan gum is one of the most promising polymers used in polymer flooding for enhancing oil recovery, due to its excellent temperature resistance and salt-tolerance performance. However, welan gum, as a polymer with higher molecular weight, can be adsorbed and detained in the pore throat of the reservoir, which is characterized by a smaller size. Montmorillonite, a kind of clay mineral with high content in reservoir rocks, has strong adsorption capacity. Therefore, the adsorption behavior of welan gum on montmorillonite, as well as its influencing factors, are studied in this paper. The results show that the adsorption capacity is 2.07 mg/g. The adsorption capacity decreased with the increase in temperature. Both acidic and alkaline conditions reduced the adsorption capacity. The existence of inorganic salt affected the adsorption capacity. In addition, the higher the cation value, the lower the adsorption capacity. The characterization tests showed that the adsorption of welan gum on montmorillonite was characterized by physical adsorption and surface adsorption, indicating that there were no changes in the internal structure of montmorillonite. This study provides feasible methods to reduce the amount of welan gum adsorbed on montmorillonite, which is of great significance for reducing the permeability damage caused by welan gum adsorption and promoting the application of welan gum in polymer flooding for enhancing oil recovery.

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Adsorption behavior of hydroxypropyl guar gum onto montmorillonite and reducing adsorption in the reservoir

Cited by 20 publications

References 36 publications

Citric Acid Modified Bentonite for Congo Red Adsorption

Citric Acid Modified Bentonite for Congo Red Adsorption

Simple, Rapid, and Highly Sensitive Colorimetric Sensor Strips from a Porous Cellulose Membrane Stained with Victoria Blue B for Efficient Detection of Trace Cd(II) in Water

Adsorption of Welan Gum on Montmorillonite and Its Influencing Factors

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