Recyclable magnetic graphene oxide for rapid and efficient demulsification of crude oil-in-water emulsion

Liu, Juan; Wang, Huanjiang; Li, Xiaocheng; Jia, Wenbao; Zhao, Ya‐Pu; Ren, Sili

doi:10.1016/j.fuel.2016.10.066

Cited by 129 publications

(67 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…13,14 After the combination of MN and GO, magnetic GO (MGO) and related complex nanomaterials were prepared and used in pollution control and sensors were benefited from the advantages of both MN and GO. [15][16][17][18] During the various kinds of applications, many advantages of MGO were demonstrated including high adsorption capacity, easy recycling and improved stability.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Tetraethylenepentamine Modified Magnetic Graphene Oxide for Adsorption of Dyes from Aqueous Solution

Tang¹,

Tang²,

Liu³

2017

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

In this study, tetraethylenepentamine modified magnetic graphene oxide nanomaterial (TMGO) was prepared and characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and vibration sample magnetometer (VSM). All the characterizations proved that the modification and preparation of TMGO were successful. The TMGO nanomaterial was used in the adsorption of Acid Red 18 (AR) in aqueous solution. The parameters like pH of solution, adsorption kinetics and isotherms were all investigated. The results indicated that the TMGO nanomaterial had satisfied adsorption ability and the maximum adsorption capacity was 524.2 mg g -1 at 45 °C and pH 6. The adsorption capacity remained at 91.8% of the initial value after five cycles. The adsorption process with AR was found through fitting the pseudo-second-order kinetics equations and the Freundlich adsorption model. The experimental results demonstrated that the TMGO nanomaterial could be rapidly extracted from the medium and had a good adsorption ability to remove dyes in wastewater.Keywords: adsorption, dye, graphene oxide, magnetic nanoparticles, tetraethylenepentamine IntroductionIncreasing interests were focused on the environmental health, especially the removal of toxic organic or inorganic pollutants from water because of the water pollution during the development of modern industry.1 Among the various toxic pollutants, dye was one of the most serious problems because of the visible color, complex component and low biodegradability.2 Dye was widely used in direct textiles, printing and dyeing. It showed many damages to plants, animals and human beings.3 Therefore, wastewater containing dyes should be treated adequately before being discharged. 4 The development of materials for removal of dyes exhibited considerable importance.Recently, many kinds of materials and nanomaterials such as silica nanoparticles, carbon nanotube, gold nanoparticles and metal oxide nanoparticles were utilized as adsorbents for removal of toxic compounds. [5][6][7][8] Graphene oxide (GO) attracted significant interests due to its high mechanical strength and facile functionalization ability.9 It could be a good material for adsorption owing to the large specific surface area, abundant oxygen containing groups and high water solubility.10-12 Magnetic nanoparticles (MN) were also good in separation of toxic dyes by simply using an ordinary magnet. 13,14 After the combination of MN and GO, magnetic GO (MGO) and related complex nanomaterials were prepared and used in pollution control and sensors were benefited from the advantages of both During the various kinds of applications, many advantages of MGO were demonstrated including high adsorption capacity, easy recycling and improved stability.In this study, tetraethylenepentamine was used in the modification of Fe 3 O 4 magnetic nanoparticle (TMN) Tang et al. 335 Vol. 29, No. 2, 2018 to increase amino group...

show abstract

Section: Introductionmentioning

confidence: 99%

Preparation of Tetraethylenepentamine Modified Magnetic Graphene Oxide for Adsorption of Dyes from Aqueous Solution

Tang¹,

Tang²,

Liu³

2017

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…However, Fe 3 O 4 @h‐PAMAM came together to form chunks. It may be because Fe 3 O 4 @h‐PAMAM agglomerated due to insufficient grinding or insufficient ultrasound during the reaction . As shown in Figure C, Fe 3 O 4 @h‐PAMAM was successfully fixed on GO through the dewatering and condensation of amino and carboxyl groups.…”

Section: Resultsmentioning

confidence: 99%

“…However, it cannot be recycled and generated secondary pollutants. Then, synthesis of magnetic GO demulsifier by Liu et al also has good demulsification performance and recyclability, but the tedious preparation process limits its further practical application. Moreover, when the average oil droplet size in the emulsions is smaller than 2 μm, demulsification performance of the magnetic GO demulsifier is far from satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of magnetically responsive hyperbranched polyamidoamine based on the graphene oxide: Application as demulsifier for oil‐in‐water emulsions

et al. 2019

View full text Add to dashboard Cite

Summary In this study, a novel, highly efficient, and magnetically responsive demulsifier, namely, Fe3O4@hyperbranched polyamidoamine‐graphene oxide (MKh‐GO), was synthesized. First, Fe3O4 was synthesized, and Fe3O4 was wrapped in hyperbranched polyamidoamine (h‐PAMAM) by γ‐(methacryloyl oxide) propyltrimethoxysilane (kh570), and MKh‐GO was synthesized by condensation reaction. The chemical structures and morphologies of the samples were characterized by Fourier transform‐infrared spectroscopy (FTIR) and transmission electron microscope (TEM). The magnetic response of the sample was tested by vibrating sample magnetometer (VSM). The MKh‐GO was used to separate crude oil in water emulsion; the effects of MKh‐GO dosage, temperature, and pH value on the demulsifying efficiency were investigated. Possible demulsification mechanisms were summarized. The results show that MKh‐GO is successfully synthesized, and MKh‐GO exhibits excellent demulsification performance; MKh‐GO is recycled seven times, and the demulsification efficiency is 97%.

show abstract

“…Then, the relatively low boiling fraction of the mixture was distilled off by heating the resulting mixture at 105 ± 2 °C under the ambient pressure for 1 h. The residue was neutralized by NaOH solution until pH = 7.0-7.5. The obtained products (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14), which were viscous brown liquid with a specific odor, were called as demulsifiers hereinafter in this paper. The chemical composition of all the 14 demulsifiers was determined by high-performance liquid chromatography (see Tables 2 and 3).…”

Section: Obtaining Demulsifiersmentioning

confidence: 99%

“…Demulsifiers are reagents from several chemical substances (surfactants, modifiers, and solvents), developed based on the properties and components of the emulsion being separated. Thousands of patents and papers are devoted to using chemical substances and compositions for the destabilization of water-in-oil emulsion in petroleum industry [1,[5][6][7][8][9][10][11][12][13][14][15].…”

Section: ■ Introductionmentioning

confidence: 99%

New Potential Demulsifiers Obtained by Processing Gossypol Resin

et al. 2019

View full text Add to dashboard Cite

Water contained in crude oil, forms so-called water-in-oil emulsions, the presence of which negatively affects the transportation and processing of oil. Demulsifiers are the special mixtures that are used to remove water from emulsions. The present paper is devoted to obtaining the demulsifiers by catalytic acid esterification of fatty acids mixture extracted from gossypol resin with isopropanol. Fourteen mixtures, containing mainly fatty acids and their ethers, were obtained and tested for demulsifying performance by using the bottle test. The relationship of the following values with the demulsibility of final mixtures was determined: the conditions of fatty acids esterification, the content of fatty acids in the demulsifier, the relative solubility number of the demulsifier, the toluene/water dynamic interfacial tension. The following conditions of fatty acids mixture esterification provided 64.8% of water removal at the dosage of 20 ppm of demulsifier: 385 K; 4 h; H2SO4/fatty acids mixture ratio 2.5 wt.%.

show abstract

Recyclable magnetic graphene oxide for rapid and efficient demulsification of crude oil-in-water emulsion

Cited by 129 publications

References 32 publications

Preparation of Tetraethylenepentamine Modified Magnetic Graphene Oxide for Adsorption of Dyes from Aqueous Solution

Preparation of Tetraethylenepentamine Modified Magnetic Graphene Oxide for Adsorption of Dyes from Aqueous Solution

Synthesis of magnetically responsive hyperbranched polyamidoamine based on the graphene oxide: Application as demulsifier for oil‐in‐water emulsions

New Potential Demulsifiers Obtained by Processing Gossypol Resin

Contact Info

Product

Resources

About