A novel polyacrylonitrile membrane with a high flux for emulsified oil/water separation

Peng, Yubing; Guo, Fei; Wen, Qiuying; Yang, Fuchao; Guo, Zhiguang

doi:10.1016/j.seppur.2017.04.036

Cited by 90 publications

(31 citation statements)

References 57 publications

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“…This result is in accordance with previous studies . This decrease results from the conversion of nitrile groups to amidoxime groups, leading to the apparition of new absorption peaks occurring at 943 and 1650 cm −1 . In addition, the amidoximation reaction which results in the formation of amide groups and carboxylic acid is characterized by absorption bands occurring at 1650and 1562 cm −1 , respectively .…”

Section: Resultssupporting

confidence: 93%

Synthesis of amidoximated polyacrylonitrile fibers and its use as adsorbent for Cr (VI) ions removal from aqueous solutions

Bouchoum

Benmoussa

Jada

et al. 2019

Env Prog and Sustain Energy

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Functionalized fibers, especially polyacrylonitrile fibers (PANF), have attracted wide interest as an effective and economical material for environment and water protection. In this study, polyacrylonitrile fibers modified with hydroxylamine hydrochloride were used as an adsorbent to remove hexavalent chromium ions from aqueous solutions. The novelty of the present study compared to the literature is the functionalization of polyacrylonitrile fibers surface by optimizing cost and energy while achieving a yield fast removal rate and high adsorption capacity of hexavalent chromium from aqueous solutions. The amidoximated polyacrylonitrile fibers were characterized using Fourier Transform InfraRed spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The results confirmed the success of polyacrylonitrile fibers modification. The adsorption capacity was evaluated by investigating the effect of initial pH solution ranging from 2.0 to 7.0, the adsorbent dose varied from 0.05 to 0.25 g, the initial Cr (VI) concentration range was (5–70 mg g−1), the temperature varied from 5 to 60°C, and the contact time ranged from 0 to 180 min. We have used the Langmuir and Freundlich adsorption models to describe the equilibrium sorption data. The maximum adsorption capacity estimated using the Langmuir model reached 32. 57 mg g−1 under optimal conditions. The thermodynamic parameters (ΔG, ΔH, and ΔS) were also determined. In addition, the adsorbent showed a desorption rate of Cr (VI) up to 92% with 0.5 mol of NaOH, which can be reused for three adsorption–desorption cycles. The overall data showed the efficiency of amidoximated polyacrylonitrile fibers in removing Cr (VI) from aqueous solutions. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Section: Resultssupporting

confidence: 93%

Synthesis of amidoximated polyacrylonitrile fibers and its use as adsorbent for Cr (VI) ions removal from aqueous solutions

Bouchoum

Benmoussa

Jada

et al. 2019

Env Prog and Sustain Energy

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“…These membranes can be made of cellulose, polyacrylonitrile (PAN), polyethersulfone (PES), hydrophilated polyvinylidene fluoride (PVDF) [34][35][36][37][38]. New hydrophilic membranes are also being developed [39][40][41]. Coalescence is enhanced with hydrophobic membranes (PVDF, polytetrafluoroethylene PTFE, polypropylene PP) [34; 35; 42].…”

Section: In This Work We Focus On the Recovery And Concentration Of Lmentioning

confidence: 99%

Cross-flow filtration for the recovery of lipids from microalgae aqueous extracts: Membrane selection and performances

Rivera

Villafaña-López

Liu

et al. 2020

Process Biochemistry

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The biorefinery of microalgae necessitates innovative choices of soft and energy-efficient processes to guarantee the integrity of fragile molecules and develop eco-friendly production. A wet processing of biomass is proposed, which avoids expensive drying steps. It includes harvesting, cell disruption, and fractionation of the target compounds. Membrane filtration is a promising clean fractionation step. In this paper, the recovery of lipids from starving Parachlorella kessleri aqueous extracts by cross-flow filtration was studied. A model solution was formulated to test four membranes of different materials (PVDF, PES, PAN) and cutoffs (200 kDa-1.5 µm). The hydrophilic PAN 500 kDa membrane presented the best performance (flux stability, permeate flux, lipid retention, and cleanability) and was therfore selected for filtrating real aqueous extracts. Similar permeation fluxes were obtained with model and real products: 34-41 L h −1 m −2 respectively. The coalescence of lipid droplets was observed with model solutions but not with real products, less concentrated. The lipids from the real products were wholly retained by the PAN membrane, whereas some of the polysaccharides and proteins were able to permeate. An optimization of the coupling between culture, cell disruption, clarification, and filtration would allow a good concentration and purification of the lipids from microalgae.

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“…The membrane displays a high flux ranging from 2200 to 3806 L/m 2 h bar and remarkable separation efficiency obtained for oil in water emulsion. Besides, the PAN membrane shows good recyclability and high fouling resistance due to ultra-low oil adhesion property and the study reported, PAN UF membrane as a promising potential for treatment of oily wastewater [47]. Membranes are considered as a prominent technology to treat oily wastewater due to its simplicity, ease of operation and low energy.…”

Section: Ultrafiltration (Uf)mentioning

confidence: 99%

“…Hydrophilic property of membrane can be evaluated by WCA (goniometer) with automated dispensing system [16], In-air water, in-air oil, underwater oil [44] and under-oil WCAs [150] techniques can be used. The surface chemical composition of membrane can be analyzed by Fourier Transform Infrared Spectroscopy (FTIR) [47], Atomic Force Microscope (AFM) measure the surface morphology (roughness), the Young's modulus and the interaction force between the oil droplets and the surface of modified membranes [18]. X-ray Photoelectron Spectroscopy (XPS) and To test the fouling property of the prepared membrane, dead-end and cross flow tests are used to investigate the flux recovery and decline for the modified and pristine membrane.…”

Section: Membrane Characterization and Fouling Testmentioning

confidence: 99%

Review on Membranes for the Filtration of Aqueous Based Solution: Oil in Water Emulsion

Gebreslase¹,

Bousquet²,

Bouyer

2018

J Membr Sci Technol

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This review provides insight into the application of membrane technology in the filtration of aqueous solution generated from different industries. Due to the ever-evolving and demanding strict attention to rules and regulation for discharging of oily waste water, researchers have investigated membrane technology as a best and suitable method for separation of oil in oil-water emulsion. Membrane-based separation processes are becoming a novel material to treat oily wastewater due its facile operation process and effective in removal of oil from oil/water emulsion. This review summarizes or highlights the recent development of advanced membrane technology employed to separate oil in water emulsion using polymer and ceramic-based membranes and modified membranes via blending, coating, grafting and other techniques. Moreover, integrated membranes system to achieve high separation efficiency over single membrane process is also discussed. Perspective and conclusions concerning the future development of filtration membranes for treatment of oil in water mixture are also provided. A review of membrane technology for oil/water emulsion treatment could have a substantial contribution in developing novel membranes and modification of the existed membranes.

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A novel polyacrylonitrile membrane with a high flux for emulsified oil/water separation

Cited by 90 publications

References 57 publications

Synthesis of amidoximated polyacrylonitrile fibers and its use as adsorbent for Cr (VI) ions removal from aqueous solutions

Synthesis of amidoximated polyacrylonitrile fibers and its use as adsorbent for Cr (VI) ions removal from aqueous solutions

Cross-flow filtration for the recovery of lipids from microalgae aqueous extracts: Membrane selection and performances

Review on Membranes for the Filtration of Aqueous Based Solution: Oil in Water Emulsion

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