Preparation and application of magnetic superhydrophobic polydivinylbenzene nanofibers for oil adsorption in wastewater

Zhu, Xiaobiao; Tian, Ye; Li, Feifei; Liu, Yapeng; Wang, Xiaohui; Hu, Xiang

doi:10.1007/s11356-018-2385-4

Cited by 17 publications

(4 citation statements)

References 37 publications

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“…As shown in Figure 5, the removal ratio of phenol increased then decreased with the increase in reaction temperature. An appropriate reaction temperature can increase the activity of hydroxyl radicals, increase the degradation rate of phenol in the reaction system, increase the reaction temperature to some extent, help reduce the activation energy of the catalytic degradation reaction, and make the reaction of OH and organic matter complete [31]. Continuous increase in reaction temperature aggravates the decomposition effect of O 3 , resulting in a decrease in the actual O 3 concentration and a decrease in the removal ratio of phenol [32].…”

Section: Resultsmentioning

confidence: 99%

Combination of Coagulation and Ozone Catalytic Oxidation for Pretreating Coking Wastewater

Chen

Sun

2019

IJERPH

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In this study, coagulation, ozone (O3) catalytic oxidation, and their combined process were used to pretreat actual coking wastewater. The effects on the removal of chemical oxygen demand (COD) and phenol in coking wastewater were investigated. Results showed that the optimum reaction conditions were an O3 mass flow rate of 4.1 mg min−1, a reaction temperature of 35 °C, a catalyst dosage ratio of 5:1, and a O3 dosage of 500 mg·L−1. The phenol removal ratio was 36.8% for the coagulation and sedimentation of coking wastewater under optimal conditions of 25 °C of reaction temperature, 7.5 reaction pH, 150 reaction gradient (G) value, and 500 mg·L−1 coagulant dosage. The removal ratios of COD and phenol reached 24.06% and 2.18%, respectively. After the O3-catalyzed oxidation treatment, the phenols, polycyclic aromatic hydrocarbons, and heterocyclic compounds were degraded to varying degrees. Coagulation and O3 catalytic oxidation contributed to the removal of phenol and COD. The optimum reaction conditions for the combined process were as follows: O3 dosage of 500 mg·L−1, O3 mass flow of 4.1 mg·min−1, catalyst dosage ratio of 5:1, and reaction temperature of 35 °C. The removal ratios of phenol and COD reached 47.3% and 30.7%, respectively.

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Section: Resultsmentioning

confidence: 99%

Combination of Coagulation and Ozone Catalytic Oxidation for Pretreating Coking Wastewater

Chen

Sun

2019

IJERPH

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“…The possibility of producing different types of nanofiber wires, able of a magnetically induced giant relative deformation, is very promising in view of their functionalization in those conditions where the filiform structure can lead to advantages. In fact, on the basis of recent bibliography, MENWs development seems to open renewals and finalizations for biomedical applications [43][44][45][46], sensing devices [47][48][49][50], electromagnetic components [51,52], absorbers [53,54], tissue engineering [7,55,56] and, in particular, to biocompatible components sensitive to external stimuli in order to regenerate or to activate the contraction and dilatation of tendons and muscles that have lost their functionality [57][58][59][60][61].…”

Section: Aligning and Strain Effects Of Magnetization In Menwsmentioning

confidence: 99%

Elastomagnetic nanofiber wires by magnetic field assisted electrospinning

Guarino¹,

Iannotti²,

Ausanio³

et al. 2019

Express Polym. Lett.

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Magnetic field assisted electrospinning is supplemented by conductive sheets that envelop the magnets and have the same potential as the deposition electrode. By optimizing the experimental conditions, it is possible to produce wires made of polymer nanofibers that incorporate longitudinally oriented magnetic particles. The morphological and magnetic characterizations confirm the preferential orientations. The new nanofiber wires are easily aligned along the maximum intensity line of the applied magnetic field. Moreover, the nanostructured wires have high longitudinal elastomagnetic strain and high transversal deflection as a response to magnetic field stimuli. Therefore, these new threadlike aggregates of magnetic nanofibers could be very appealing for application in all microelectronic or biomedical devices whose functionality requires orientation or deformation.

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“…They carried out a precise comparison between nonlinear and linear forms of kinetic and adsorption isotherm models for the removal capability of the product toward MB. Zhu et al 14 synthesized a new magnetic poly(divinyl benzene) hollow nanofibers. These fabricated materials were known as a superhydrophobic substance that was used for oil adsorption in coking wastewaters.…”

Section: ■ Introductionmentioning

confidence: 99%

Removal of the Anionic Dye Congo Red from an Aqueous Solution Using a Crosslinked Poly(vinyl alcohol)-ZnO-Vitamin M Nanocomposite Film: A Study of the Recent Concerns about Nonlinear and Linear Forms of Isotherms and Kinetics

Mallakpour

Lormahdiabadi

2022

Langmuir

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This paper deals with the preparation, characterization, and application of a crosslinked poly(vinyl alcohol)/ZnO-vitamin M (PVA/ZnO-VM) nanocomposite film for the removal of Congo red (CR) from an aqueous solution. The characterization of a crosslinked PVA/ZnO-VM nanocomposite film showed that the structure became more regular and also the surface morphology appeared smooth in comparison with pure PVA. The obtained data from Brunauer− Emmett−Teller (BET) proved the mesoporous structure for this nanocomposite film. Several effective factors were examined for the adsorption ability of the nanocomposite film, including solution pH (2−10), sorbent amount (0.02−0.08 g), contact time (3−240 min), initial concentration of the adsorbate (30−300 mg•L −1 ), and temperature (318−358 K). The optimal conditions are as follows: pH = 10, adsorbent amount = 0.06 g, and C 0 = 200 mg•L −1 . The removal efficiency of the nanocomposite film was 92% after 4 h at the ambient temperature. To interpret the adsorption process, nonlinear and linear forms of kinetic and isotherm models were considered. The obtained data followed nonlinear pseudo-second-order and linear Langmuir isotherm models, which indicated the monolayer formation of CR over the crosslinked PVA/ZnO-VM nanocomposite film with the maximum adsorption capacity of about 56.49 mg•g −1 . Also, the adsorption process of CR by the crosslinked PVA/ZnO-VM nanocomposite film is a spontaneous and exothermic reaction.

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Preparation and application of magnetic superhydrophobic polydivinylbenzene nanofibers for oil adsorption in wastewater

Cited by 17 publications

References 37 publications

Combination of Coagulation and Ozone Catalytic Oxidation for Pretreating Coking Wastewater

Combination of Coagulation and Ozone Catalytic Oxidation for Pretreating Coking Wastewater

Elastomagnetic nanofiber wires by magnetic field assisted electrospinning

Removal of the Anionic Dye Congo Red from an Aqueous Solution Using a Crosslinked Poly(vinyl alcohol)-ZnO-Vitamin M Nanocomposite Film: A Study of the Recent Concerns about Nonlinear and Linear Forms of Isotherms and Kinetics

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