The performance of an efficient polymer and Cloisite 30B derivatives in the adsorption desulfurization process

Mahmoudian, Massoud; Abdali, Arezoo; Eskandarabadi, Somayeh Mahmoudi; Nozad, Ehsan; Enayati, Mojtaba

doi:10.1007/s00289-020-03132-4

Cited by 12 publications

(5 citation statements)

References 34 publications

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“…The peak at 3055 cm −1 is associated with stretching vibration of C-H bonded to the benzene ring. The appearance of two peaks at 1680 and 1480 cm −1 is attributed to the asymmetric and symmetric stretching vibration of coordinated carboxylic acid [34]. The peaks at 1730 and 1150 cm −1 are associated with the stretching vibration of carbonyl and C-O bonds of the carboxylate group, respectively, and peaks appearing at 680-820 cm −1 are relevant to Cu-O stretching vibrations [33,35].…”

Section: Ftir Analysismentioning

confidence: 98%

Elimination of dibenzothiophene from n-hexane by nano-composite membrane containing Cu-MOF in a pervaporation process

et al. 2020

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In this study, a particular type of thin film nano-composite membranes was prepared and used in the pervaporation process. The membranes were made of polyphenylsulfone and were coated with a thin layer of polydimethylsiloxane containing different amount of Cu-metal-organic framework (MOF) nano-structures. N-hexane containing dibenzothiophene was used as a model fuel. To characterize MOF and the prepared membranes, Fourier transform infrared, X-Ray diffraction, Brunauer-Emmett-Teller, field-emission scanning electron microscopy, water contact angle measurements, and thermogravimetric analysis were used. The effect of parameters such as sulfur content, process temperature, and Cu-MOF concentration on the membrane performance was evaluated. The results indicated that nano-composite membranes demonstrate a much better performance compared to the untreated membrane. The membrane containing 5 wt% Cu-MOF with a contact angle of 97° had more hydrophilic surface and proved the effect of the additive in improving the surface hydrophilicity. This membrane had the highest rate of flux and rejection (0.4 kg/m 2 h and 70%, respectively), and the lowest enrichment factor (0.3). As the temperature increased, the flux of M 4 membrane (with 5 wt% additive) increased, while the removal efficiency decreased significantly. The optimum temperature for desulfurization in the pervaporation process was obtained (50 °C).

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Section: Ftir Analysismentioning

confidence: 98%

Elimination of dibenzothiophene from n-hexane by nano-composite membrane containing Cu-MOF in a pervaporation process

et al. 2020

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“…MOF-based desulfurization studies use the temperature range of 25–220 °C. The adsorbents show a maximum sulfur adsorption capacity in the range of 2.0–227 mg/g over the concentration range of 14–1000 ppm. ,,− …”

Section: Adsorbentsmentioning

confidence: 99%

“…Studies that have also focused on regeneration use four types of regeneration methods. These different methods and the corresponding total number of studies performed are listed as follows: Thermal regeneration: seventeen studies ,,,,,,,,,,− ,,,, Chemical regeneration: eight studies ,,,,,− Thermal–chemical (combining) regeneration: seven studies ,,,,,, Bacterial regeneration: three studies ,, …”

Section: Regenerationmentioning

confidence: 99%

“…The method uses washing of spent adsorbents, mostly carbon, silica, and MOF-based adsorbents, followed by centrifugation or filtration multiple times using different solvents. Among the adsorption studies, eight studies used the chemical method for regeneration, in which one study each was performed on the alumina-based adsorbent and the silica-based adsorbent, three studies regenerated carbon-based adsorbents, ,, and another three studies regenerated MOF. − Various solvents have been used: ethanol, dicholormethane, toluene, nitric acid, acrylonitrile, methanol, acetone, N–N dimethyleformide, and also deionized water. Some adsorbents were sequentially washed with different solvents and deionized water.…”

Section: Regenerationmentioning

confidence: 99%

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Review of Adsorptive Desulfurization of Liquid Fuels and Regeneration Attempts

Omar

Verma

2022

Ind. Eng. Chem. Res.

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Sulfur in refined or processed petroleum liquid fuels has harmful effects on humans, agricultural crops, and buildings when emitted into the environment during the combustion of the fuels. The first part of this review focuses on the adsorptive desulfurization of liquid fuels using different types of adsorbent materials. The second part is on the regeneration attempts that have been made over the past several years on the spent materials with a view to reusing them for desulfurization in subsequent cycles. Unfortunately, the review clearly shows that the regeneration methods have met only partial success. With bacterial treatments increasingly becoming common in several environmental remediation applications, as a standalone or in a hybrid approach, the bioregeneration of the spent (desulfurization) adsorbents appears to be promising. This review promotes the bacterial regeneration method using the same bacteria that is used for desulfurization of the fuels.

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“…Figure 1 displays the XRD patterns of pristine Cloisite 30B (C) as well as CsT composite before and after inclusion of C. XRD pattern of pure cloisite 30B, Fig. 1a, exhibits a peak at 2θ = 4.67° [5,6,53]. For CsT composite, Fig.…”

Section: Xrd Analysismentioning

confidence: 99%

Simultaneous Removal of Cationic Crystal Violet and Anionic Reactive Yellow Dyes using eco-friendly Chitosan Functionalized by Talc and Cloisite 30B

Kandil

Ali

2022

J Polym Environ

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Designing adsorbent materials that can effectively remove many types of organic dyes is crucial because of the wide diversity of synthetic dyes found in wastewater. Thus, this study presents the synthesis of economic and eco-friendly adsorbent composites composed of chitosan (Cs), talc (T), and Cloisite 30B clay (C) to remove both cationic crystal violet (CV) and anionic reactive yellow 145 (RY) dyes for the first time. Cs was functionalized with T and subsequently the CsTC1 and CsTC2 composites were prepared by sensitizing the obtained CsT with different weight ratios of Cloisite 30B (C). X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), N2 adsorption–desorption isotherm, and zeta potential analysis were employed to characterize the materials. The addition of T to Cs matrix improves the thermal stability, pore size, and pore volume with respect to pure Cs. The effect of C inclusion was examined by measuring the affinity of the prepared composites towards adsorption of cationic CV and anionic RY dyes in comparison to pure Cs and CsT composite. The adsorption results in a single dye solution revealed that the CsTC1 composite is the most effective adsorbent for removal of RY dye with 76.9 mg/g adsorption capacity, whereas the CsTC2 composite exhibited the highest adsorption activity for CV dye (37.03 mg/g). Furthermore, RY and CV co-adsorption on CsTC composites was tested from a mixed dye solution. The adsorption kinetics of RY and CV adsorption followed the pseudo second order model. Langmuir isotherm model described the experimental adsorption data better than the Freundlich, Dubinin–Radushkevich, and Temkin isotherm models, indicating a monolayer sorption process for both dyes. The proposed mechanism for RY and CV adsorption using CsTC composites was investigated.

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The performance of an efficient polymer and Cloisite 30B derivatives in the adsorption desulfurization process

Cited by 12 publications

References 34 publications

Elimination of dibenzothiophene from n-hexane by nano-composite membrane containing Cu-MOF in a pervaporation process

Elimination of dibenzothiophene from n-hexane by nano-composite membrane containing Cu-MOF in a pervaporation process

Review of Adsorptive Desulfurization of Liquid Fuels and Regeneration Attempts

Simultaneous Removal of Cationic Crystal Violet and Anionic Reactive Yellow Dyes using eco-friendly Chitosan Functionalized by Talc and Cloisite 30B

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