Mathematical Model for Numerical Simulation of Organic Compound Recovery Using Membrane Separation

Pelalak, Rasool; Heidari, Zahra; Soltani, Hadi; Shirazian, Saeed

doi:10.1002/ceat.201700445

Cited by 32 publications

(15 citation statements)

References 52 publications

(68 reference statements)

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“…The discretized geometry of process is shown in Figure . UMFPACK was used as the direct solver for the solution of the equations . A computer with central processing unit (CPU) speed of 3.5 GHz and 32 GB of random‐access memory (RAM) was used for the numerical calculations, while adaptive mesh tool in COMSOL software was used in order to find the optimum number of meshes for the model domain and implement the mesh independence test.…”

Section: Model Of Processmentioning

confidence: 99%

Simulation of Nonporous Polymeric Membranes Using CFD for Bioethanol Purification

Asadollahzadeh

Raoufi

Rezakazemi

et al. 2018

Macro Theory & Simulations

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A mechanistic model is developed to simulate ethanol purification using membrane technology. In the considered process, a feed solution containing 10 wt% water + 90 wt% ethanol is contacted with a polymeric dense membrane in a pervaporation system. The membrane selectively separates water from solution in order to purify the ethanol. In the development of the model, it is assumed that the water is the main penetrant through the membrane due to the hydrophilicity of membrane material. The mass fraction of water molecules in the feed solution, as well as membrane, is estimated using Maxwell–Stefan approach. The governing equations are then solved using finite element method in order to predict mass fraction, mass transfer flux, and velocity of the solution in the membrane module. The results indicate that the model can predict the formation of concentration and velocity boundary layer in the feed solution near the membrane/feed interface. Moreover, the developed model is robust and reliable in the understanding of membrane separation processes applicable for dehydration of alcohols.

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Section: Model Of Processmentioning

confidence: 99%

Simulation of Nonporous Polymeric Membranes Using CFD for Bioethanol Purification

Asadollahzadeh

Raoufi

Rezakazemi

et al. 2018

Macro Theory & Simulations

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“…Among them, the interaction between metal atom clusters is manifested as a synergistic effect, spacing enhancement effect (geometric effect), and electronic effect, which is not only a simple superposition of the function of a single atom, but also conduce to adjust the catalytic activity site and enhance the catalytic function. Accordingly, the construction of a structural stabilization metal atom cluster catalytic agent can activate the PMS [19] …”

Section: Introductionmentioning

confidence: 99%

Ni/Fe Bimetallic Atom Cluster Activate PMS To Promote ¹O₂ Production To Efficiently Remove BPA

Zhang,

Song,

Liu

et al. 2024

ChemistrySelect

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The advanced oxidation process based on peroxymonosulfate (PMS) is a new water purification strategy. In this work, Ni/Fe bimetallic atom cluster composite catalyst is prepared by a hydrothermal synthesis to stimulate PMS to produce high concentration singlet oxygen (1O2) and efficiently remove bisphenol A (BPA) from aqueous solution. The experimental data show that in a broad pH range (pH=3–11), the removal rate of BPA by the non‐free radical pathway induced by 1O2 is close to 100 %, and the catalyst still has high stability after 5 cycles. The mechanism of BPA removal in NiFe−BC/PMS/BPA catalytic degradation system is investigated by quenching experiment. It is found that 1O2 in the system is the most important active component in the degradation process of BPA, and a high concentration of 1O2 could promote the rapid degradation of BPA in solution. In this paper, the high catalytic activity and selectivity of bimetallic atomic cluster catalysts can provide new insights for the treatment of phenolic wastewater.

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“…Numerous materials have been described for use in the photocatalyst process, including titanium oxides and mixed oxides of zinc and zinc iron. 7,8 Photocatalysts made of semiconductor metal oxides can also generate hydrogen fuel and capture solar energy. It can also be used to break down various contaminants, including insecticides, phenols, and antibiotics.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of cationic and anionic dyes by ZnO and S/ZnO biosynthesized nano‐photocatalysts

Hassan,

Farag,

El‐Dafrawy

2024

Applied Organom Chemis

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Photocatalysis is considered a promising and efficient oxidation technique for wastewater treatment. Developing more environmentally biocompatible, simple, effective, and inexpensive photocatalysts enables photocatalysis technology to be at the forefront of wastewater treatments. As an alternative to harmful chemicals, this work focused on the biosynthesis of a variety of ZnO and doped ZnO based on the extract of the brown alga Cystoseira crinite. X‐ray diffraction (XRD), scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDX), Fourier transform‐infrared (FTIR) spectroscopy, and ultraviolet–visible (UV–vis) spectroscopy were used to characterize the structure, phase, morphology, and UV–vis properties of the biosynthesized samples. XRD showed the crystalline structure of ZnO and S‐doped ZnO. SEM analysis revealed agglomerated spherical particles of the prepared samples. EDX analysis confirmed the formation of S‐doped ZnO. FTIR spectra exhibited that phenolic compounds and protein molecules are present in the Cystoseira crinite extract. The photocatalytic efficiency of biosynthesized materials was examined by monitoring the degradation of crystal violet (CV) and methyl orange (MO) dyes, which serve as cationic and anionic dye models, respectively. The various factors that influence the efficacy of the photodegradation process were investigated. In total, 5% S‐doped ZnO decomposed 97.40% and 89.18% of CV and MO dyes, respectively. The dye degradation was most efficient in samples calcined at 500 °C. The photodegradation of CV dye was enhanced at high pH, while the highest photocatalytic activity of MO dye was observed at low pH values. The kinetic study confirmed that the photodegradation follows the first‐order reaction.

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Mathematical Model for Numerical Simulation of Organic Compound Recovery Using Membrane Separation

Cited by 32 publications

References 52 publications

Simulation of Nonporous Polymeric Membranes Using CFD for Bioethanol Purification

Simulation of Nonporous Polymeric Membranes Using CFD for Bioethanol Purification

Ni/Fe Bimetallic Atom Cluster Activate PMS To Promote ¹O₂ Production To Efficiently Remove BPA

Photodegradation of cationic and anionic dyes by ZnO and S/ZnO biosynthesized nano‐photocatalysts

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Mathematical Model for Numerical Simulation of Organic Compound Recovery Using Membrane Separation

Cited by 32 publications

References 52 publications

Simulation of Nonporous Polymeric Membranes Using CFD for Bioethanol Purification

Simulation of Nonporous Polymeric Membranes Using CFD for Bioethanol Purification

Ni/Fe Bimetallic Atom Cluster Activate PMS To Promote 1O2 Production To Efficiently Remove BPA

Photodegradation of cationic and anionic dyes by ZnO and S/ZnO biosynthesized nano‐photocatalysts

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Ni/Fe Bimetallic Atom Cluster Activate PMS To Promote ¹O₂ Production To Efficiently Remove BPA