Multifunctional recycled wet wipe with negatively charged coating for durable separation of oil/water emulsion via interface charge demulsification

Zhu, Xu; Zhang, Jianqiang; Zhu, Lei; Wang, Ran; Gan, Shang; Xue, Jinwei; Liu, Xilu; Li, Hui

doi:10.1016/j.seppur.2021.119984

Cited by 22 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are strong peaks at 3362 and 850 cm –1 in the curve of the GR/CS-PA, which can be attributed to the introduction of PA. The two peaks belong to the −OH and P–O of PA, respectively. , The introduction of PA can enhance the mechanical strength of the coating by forming a second cross-linking network through the electrostatic attraction of CS and PA. The mechanical strengths of GR/CS and GR/CS-PA are shown in Figure h.…”

Section: Resultsmentioning

confidence: 99%

“…The two peaks belong to the −OH and P–O of PA, respectively. 30 , 31 The introduction of PA can enhance the mechanical strength of the coating by forming a second cross-linking network through the electrostatic attraction of CS and PA. The mechanical strengths of GR/CS and GR/CS-PA are shown in Figure 3 h. Through calculation, the Young’s Module of GR/CS is 0.021 MPa, and the module of GR/CS-PA has increased to 0.73 MPa after the introduction of PA.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Preparation of Degradable Antiwaxing Coating and a Novel Method for Quantifying Antiwaxing Property of Coatings

et al. 2022

Self Cite

View full text Add to dashboard Cite

The deposition of wax on the surface of the pipeline or the facilities is harmful to oil industries, which can cause serious safety problems and economic loss. To address this problem, a degradable glutinous rice/chitosan-phytic acid composite coating (GR/CS-PA) was prepared. The GR can serve as an adhesive, and it can also enhance the flexibility of CS-PA. The CS-PA component can be used to retain water to prevent the adhesion of crude oil and enhance the mechanical properties of the antiwaxing layer. With the hydration layer on the surface of the GR/CS-PA coating, which can prevent contact between the pollutants and the GR/CS-PA, the coating possesses excellent antifouling properties, especially excellent antiwaxing performance. In addition, an antiwaxing performance testing method was established to quantificationally evaluate the antiwaxing performance of the coating, and the antiwaxing performance (AWP) value was proposed to be the criterion of the antiwaxing performance of the coating. We hope that the green coating and the quantitative testing method can be applied in the petroleum industry to solve the wax deposition problem.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Preparation of Degradable Antiwaxing Coating and a Novel Method for Quantifying Antiwaxing Property of Coatings

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Unlike filtration processes based on physical sieving, the demulsification process is based on the coalescence of oil droplets in the membrane. , Therefore, exploring the different oil droplet coalescence processes on the HI and HO layers is a prerequisite to investigate the demulsification mechanism of the 3H-SSFF. MD simulations were used to investigate the wetting and coalescence processes of SDS-stabilized emulsified oil droplets on hydrophilic and hydrophobic surfaces.…”

Section: Resultsmentioning

confidence: 99%

Sequential Demulsification through the Hydrophobic-Hydrophilic-Hydrophobic Filtration Layer toward High-Performing Oil Recovery

Li,

Zhang,

Liu

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

Demulsification using membranes is a promising method to coalesce highly stable emulsified oil droplets for oil recovery. Nevertheless, a structure of the current filtration medium that is not efficient for oil droplet coalescence impedes rapid permeability, thereby inevitably restricting their practical applications. Herein, we report a hydrophobic-hydrophilic-hydrophobic (3H) demulsification medium that exhibits a benchmark permeability of ∼2.1 × 10 4 L m −2 h −1 with a demulsification efficiency of >98.0%. Remarkably, this 3H demulsification medium maintains over 90% demulsification efficiency in the oil-in-water (O/W) emulsions with a wide range of surfactant concentrations, which shows excellent applicability. Based on the combined results of quasi situ microscope images and molecular dynamics simulations, we show that the polydimethylsiloxane-modified hydrophobic layer facilitates the capture and coalescence of oil droplets, the hydrophilic inner layer assists in squeezing the coalescence of enlarged droplets, and the third hydrophobic layer accelerates the discharge of demulsified oil to sustain permeability. The sequential demulsification mechanism between this 3H filtration layer provides a general guide for designing a demulsifying membrane with high demulsification efficiency and high flux toward oil recovery.

show abstract

“…NMR (Figure 2c) and FTIR (Figure 2d) spectra support successful methacrylation and curing with incorporated CD. 1 H NMR shows the hydroxyethyl cellulose methylene proton signals between 3.5 and 3.6 ppm. After the reaction additional peaks appeared at 1.77 (methyl protons, − CH 3 ), 5.25, and 5.5 (vinyl protons −C�C), with prominent height.…”

Section: Formulation Of the Gels And Controlledmentioning

confidence: 99%

Light Processable Methacrylated Carbon Dot-Hydroxyethyl Cellulose Resins with Potential Applications from Dye Adsorption to Antibacterial Gels and Wet Wipes

Hazarika,

Srivastava,

Hakkarainen

2024

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Cellulose-derived materials could offer more sustainable alternatives for current single-use hygiene articles produced from nondegradable fossil-based polymers. We successfully fabricated light processable methacrylated carbon dot-hydroxyethyl cellulose resins and illustrated potential applications in dye adsorption, antibacterial gels, and wet wipes. Carbon dots were first produced by microwave-assisted hydrothermal carbonization and the oxidation of cellulose. The obtained carbon dots and hydroxyethyl cellulose were in situ methacrylated to composite resins, which could be cured to gels in a mold or processed to 3D structures with digital light processing 3D printing. The cured gels had an adequate gel content of 80–84% and high swelling degree up to 350% in binary mixtures of water and dimethyl sulfoxide. Furthermore, the gels were effective dye-adsorbents, and they retained some of the antibacterial properties of nonmodified hydroxyethyl cellulose as evaluated by the disc diffusion method. While the gels could still be recovered after 60 days of soil burial at room temperature, clear sign of degradation and opening of the cross-linked structure were observed by scanning electron microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Finally, a potential wet wipe was fabricated by laminating the produced gel between two electrospun cellulose acetate mats.

show abstract

Multifunctional recycled wet wipe with negatively charged coating for durable separation of oil/water emulsion via interface charge demulsification

Cited by 22 publications

References 30 publications

Preparation of Degradable Antiwaxing Coating and a Novel Method for Quantifying Antiwaxing Property of Coatings

Preparation of Degradable Antiwaxing Coating and a Novel Method for Quantifying Antiwaxing Property of Coatings

Sequential Demulsification through the Hydrophobic-Hydrophilic-Hydrophobic Filtration Layer toward High-Performing Oil Recovery

Light Processable Methacrylated Carbon Dot-Hydroxyethyl Cellulose Resins with Potential Applications from Dye Adsorption to Antibacterial Gels and Wet Wipes

Contact Info

Product

Resources

About