Modeling and Simulation of a Vacuum Membrane Distillation Plant Coupled With Solar Energy and Using Helical Hollow Fibers

Zrelli, Adel; Chaouachi, Béchir

doi:10.1590/0104-6632.20190363s20180531

Cited by 10 publications

(5 citation statements)

References 25 publications

(24 reference statements)

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“…Many configurations of membranes can be seen such as hollow fiber membranes or flat membranes [28]. In this study, we prepared flat membranes from a waste of low density polyethylene (LDPE) as described elsewhere [29].…”

Section: Membrane Preparationmentioning

confidence: 99%

Valorization of Date Palm Wastes by Lignin Extraction to be Used for the Improvement of Polymeric Membrane Characteristics

Zrelli

Elfalleh

Ghorbal

et al. 2021

Period. Polytech. Chem. Eng.

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This work aimed to valorize Date Palm Wastes (DPW) by the extraction of lignin and its application for polymeric membrane modification. Lignin was extracted from five types of DPW (date palm kernel, leaflet, pedicel, palm frond, and fibrilium) using the Klason method. Following DPW characterization, we remark the highest amount of extractives content in the leaflet sample (10.07 %) and the lowest in the fibrilium sample (6.51 %). The ash content ranged from 1.56 % for fibrilium to 7.96 % for palm frond. After extraction, the lignin yield was in the range of 22–32 %. The extracted lignins were characterized by Infrared and Ultraviolet–visible spectroscopy. All extracted lignins provide a high concentration of (-OH) group. Besides, both syringyl and guaiacyl are present in the extracted lignins with a slightly more syringyl unit. The extracted lignins were added to the polymeric solution, prepared from waste plastic, to produce membranes. These membranes showed improved hydrophilicity marked a decrease in the contact angle of 28 % when the lignin concentration increased from 0.125 to 0.5 %. In addition, the membrane porosity increased with the use of the extracted lignins as an additive.

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Section: Membrane Preparationmentioning

confidence: 99%

Valorization of Date Palm Wastes by Lignin Extraction to be Used for the Improvement of Polymeric Membrane Characteristics

Zrelli

Elfalleh

Ghorbal

et al. 2021

Period. Polytech. Chem. Eng.

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“…Despite the limitations posed by the high cost of raw materials and sintering temperature, the utilization of ceramic membranes has been successfully addressed by researchers through the implementation of cost-effective alternatives like kaolin [26][27][28][29]. For the required energy, the use of low-cost, renewable energy sources, including geothermal energy, solar energy, and waste heat from industrial systems was suggested [30][31][32][33]. The hydrophilic nature of ceramic membranes poses another hindrance to their utilization in the MD process.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Superhydrophobic Modification of Low-Cost Multi-Layer Composite Mullite Base Tubular Ceramic Membrane for Water Desalination

Zare,

Abbasi,

Hashemifard

et al. 2024

Water

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This study aimed to investigate and develop a cost-effective and superhydrophobic ceramic membrane for direct contact membrane distillation (DCMD) applications. Two types of mullite-based composite membranes were prepared via extrusion and sintering techniques. To create a small and narrow pore diameter distribution on the membrane surface, the dip-coating technique with 1 µm alumina was employed. The hexadecyltrimethoxysilane eco-friendly grafting agent was adopted to modify low-cost multilayer mullite-based composite membranes, transforming them from hydrophilic to superhydrophobic. The prepared membranes were characterized via field emission scanning electron microscopy (FESEM), energy-dispersive spectrometry (EDS), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD), liquid entire pressure (LEP), contact angle, atomic force microscopy (AFM), porosity, and membrane permeability. The results of the prepared membranes validate the appropriateness of the material for membrane distillation applications. The optimized membrane, with a contact angle of 160° and LEP = 1.5 bar, was tested under DCMD using a 3.5 wt.% sodium chloride (NaCl) synthetic solution and Persian Gulf seawater as a feed. Based on the acquired results, an average permeate flux of 3.15 kg/(m2·h) and salt rejection (R%) of 99.62% were found for the 3.5 wt.% NaCl solution. Moreover, seawater desalination showed an average permeate flux of 2.37 kg/(m2·h) and salt rejection of 99.81% for a 20-h test without any pore wetting. Membrane distillation with a hydrophobic membrane decreased the turbidity of seawater by 93.13%.

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“…Membrane technology is a rapidly evolving field that has revolutionized the separation and purification processes in various industries [1], including principally wastewater treatment and water distillation [2,3], pharmaceuticals [4,5], food and beverage [6][7][8], and biotechnology [9,10]. Membranes can be produced from polymeric or ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

Studying the Effect of Phosphogypsum Addition on Ceramic Membrane Properties

Zrelli,

Metoui,

Doucouré

2023

ETJ

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This study aimed to investigate the effects of phosphogypsum addition on ceramic membrane properties. In this regard, clay and phosphogypsum were characterized using FTIR and laser particle sizer. The ceramic paste was prepared by incorporating varying amounts of phosphogypsum (10 to 50%), followed by molding using a semidry-pressing process at 10 bars pressure and sintering temperature at 900℃. The raw materials and prepared membranes were analyzed using FTIR, laser particle size, contact angle, porosity, and mechanical strength to evaluate the properties of the resulting ceramic membranes. The study showed that as the amount of phosphogypsum increased from 10% to 50%, the membrane's hydrophilicity significantly increased, while its mechanical strength decreased by 35% and porosity increased by 26%. Moreover, the permeability of distilled water also showed a significant increase of 67% when the amount of phosphogypsum was increased from 10% to 50%.These observations suggest that phosphogypsum can significantly influence ceramic membrane properties, which may have implications for its use in various membrane applications. The findings of this research contribute to our understanding of the potential use of phosphogypsum as a valuable material for ceramic membrane production, with important implications for sustainable waste management practices. Future studies can focus on exploring the suitability of these ceramics for various applications and their environmental impact.

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Modeling and Simulation of a Vacuum Membrane Distillation Plant Coupled With Solar Energy and Using Helical Hollow Fibers

Cited by 10 publications

References 25 publications

Valorization of Date Palm Wastes by Lignin Extraction to be Used for the Improvement of Polymeric Membrane Characteristics

Valorization of Date Palm Wastes by Lignin Extraction to be Used for the Improvement of Polymeric Membrane Characteristics

Eco-Friendly Superhydrophobic Modification of Low-Cost Multi-Layer Composite Mullite Base Tubular Ceramic Membrane for Water Desalination

Studying the Effect of Phosphogypsum Addition on Ceramic Membrane Properties

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