Performance analysis of tubular membrane distillation modules: An experimental and CFD analysis

Shafieian, Abdellah; Khiadani, Mehdi; Zargar, Masoumeh

doi:10.1016/j.cherd.2022.05.033

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…Additionally, the permeation flux was compared by varying the water flow rates from 60 to 120 L/h, which increased permeation flux by a factor ranging from 07.−1.1. Further, Shafieian et al, 2022 enhanced the performance of water productivity and highlighted the reduced water flow rate sensitivity to heat transfer coefficients below 1250 Ws/m 3 .degC. This finding enlightened him to develop a 3-D CFD model to optimize the heat transfer coefficient in thermal-driven tubular MD modules to achieve higher water productivity.…”

Section: Tubular Modulementioning

confidence: 92%

Tuning of polymeric membranes to mitigate fouling and removal of dissolved compounds for wastewater treatment: a Review

Tarun,

Dakshesh,

Arthanareeswaran

2024

Front. Membr. Sci. Technol.

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Wastewater, referred to as sewage, has been a byproduct of human settlement since ancient times. An increase in human activities leads to more wastewater effluents, resulting in higher concentrations of organic compounds, which are harmful to all forms of living organisms and drinking water purposes. Traditional methods cannot satisfy this issue for higher concentrations. The advanced membrane process is an alternative to this conventional method for removing organic compounds and various effluents due to its high permeate quality and less toxicity. Moreover, the modification of polymeric membranes by increasing its content led to a higher flux thereby enhancing the fouling property for effective wastewater treatment. The processes, UF, RO, NF, and FO, ion exchange, MD, and pervaporation, were developed for more robust methods to improve the quality of the environment and lead to higher salt rejection. This review provides an overview of the fabrications, methods and modifications of substrates utilized in different processes with varying modules to achieve a higher flux rate, lowering the fouling. We discuss the materials used for various membrane modules in ceramic membranes under different operating circumstances and the methods to enhance the performance of membrane fouling. This review also aims to track the ongoing research works to broaden different process combinations for further research purposes, showcasing better antifouling performance and maximizing water quality in the future.

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Section: Tubular Modulementioning

confidence: 92%

Tuning of polymeric membranes to mitigate fouling and removal of dissolved compounds for wastewater treatment: a Review

Tarun,

Dakshesh,

Arthanareeswaran

2024

Front. Membr. Sci. Technol.

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“…2) The momentum equation is given by Equation (13) [ 35 ]

$$\frac{\partial \left(\right. \rho u_{i} u_{j} \left.\right)}{\partial x_{j}} = - \frac{\partial p}{\partial x_{i}} + \frac{\partial}{\partial x_{i}} \left[\right.

…”

Section: Mathematic Modelmentioning

confidence: 99%

Heat Transfer and Melting Characteristics of Calcium‐Cored Wire in Molten Steel

Guo,

Chen,

2023

steel research int.

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To accurately describe the heat transfer and melting characteristics of a calcium‐cored wire in molten steel, the finite difference method is used in theoretical calculations to solve the relationship between the melting temperature, radius, and time. Numerical simulations are performed using the Eulerian–Eulerian method to characterize the temperature distribution at different periods. The results show that the radius of the calcium wire and steel shell both decrease and the melting rate gradually increases. The calcium‐cored wire has a fish‐scale temperature distribution, with the temperature decreasing from a maximum at the front down to the tail end and increasing outward from the center axis. The temperature of the wire core is 1120 K at 0.272 s, indicating the complete melting of the pure internal calcium. The temperature of the calcium wire–steel shell interface reaches 1793 K at 0.979 s and remains from 1645 to 1757 K at the front of calcium wire. The steel shell melts through, and calcium flows into the molten steel in liquid form. The numerical simulation results generally agree with the theoretical calculations, and the reliability of the model is verified by comparison with published studies.

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“…Plate and frame membrane distillation components have the highest transmembrane flux but the lowest membrane surface area-to-volume ratio. To address the packing density issue, configurations such as hollow fiber, ceramic tube, and tubular membrane distillation can be used [ 19 , 20 , 21 ]. Among them, the tubular membrane component has a high packing density and large tube span, effectively solving membrane fouling problems and reducing polarization phenomena [ 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Finned Tubular Air Gap Membrane Distillation

Guo

2023

Membranes

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Finned tubular air gap membrane distillation is a new membrane distillation method, and its functional performance, characterization parameters, finned tube structures, and other studies have clear academic and practical application value. Therefore, the tubular air gap membrane distillation experiment modules composed of PTFE membrane and finned tubes were constructed in this work, and three representative air gap structures, including tapered finned tube, flat finned tube, and expanded finned tube, were designed. Membrane distillation experiments were carried out in the form of water cooling and air cooling, and the influences of air gap structures, temperature, concentration, and flow rate on the transmembrane flux were analyzed. The good water-treatment ability of the finned tubular air gap membrane distillation model and the applicability of air cooling for the finned tubular air gap membrane distillation structure were verified. The membrane distillation test results show that with the tapered finned tubular air gap structure, the finned tubular air gap membrane distillation has the best performance. The maximum transmembrane flux of the finned tubular air gap membrane distillation could reach 16.3 kg/m2/h. Strengthening the convection heat transfer between air and fin tube could increase the transmembrane flux and improve the efficiency coefficient. The efficiency coefficient (σ) could reach 0.19 under the condition of air cooling. Compared with the conventional air gap membrane distillation configuration, air cooling configuration for air gap membrane distillation is an effective way to simplify the system design and offers a potential way for the practical applications of membrane distillation on an industrial scale.

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Performance analysis of tubular membrane distillation modules: An experimental and CFD analysis

Cited by 9 publications

References 22 publications

Tuning of polymeric membranes to mitigate fouling and removal of dissolved compounds for wastewater treatment: a Review

Tuning of polymeric membranes to mitigate fouling and removal of dissolved compounds for wastewater treatment: a Review

Heat Transfer and Melting Characteristics of Calcium‐Cored Wire in Molten Steel

Finned Tubular Air Gap Membrane Distillation

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