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

Zrelli, Adel; Elfalleh, Walid; Ghorbal, Achraf; Chaouachi, Béchir

doi:10.3311/ppch.18273

Cited by 6 publications

(2 citation statements)

References 42 publications

(49 reference statements)

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“…To investigate the impact of phosphogypsum addition on the porosity of a ceramic membrane, the Archimedes method was employed to determine the porosity of the membrane [31,32]. To conduct this analysis, the ceramic membrane was first dried in a Memmert oven UN 30 at 105°C until a constant weight was achieved (m1, kg).…”

Section: Membrane Porositymentioning

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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Section: Membrane Porositymentioning

confidence: 99%

Studying the Effect of Phosphogypsum Addition on Ceramic Membrane Properties

Zrelli,

Metoui,

Doucouré

2023

ETJ

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“…The cellulose content of leaves and rachis are around 55 and 40 wt%, respectively, and their hemicellulose contents account for approximately 20 and 28 wt% [ 4 ]. Further, the lignin content of date palm biomass usually ranges between 22 and 32 wt% [ 5 ]. This chemical composition offers to date palm wastes (DPWs) a myriad of opportunities in different sectors, such as biocomposites, but also other groundbreaking areas demanding biosourced and environmentally friendly materials and products [ 3 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Lignin-Containing Cellulose Nanofibrils from TEMPO-Mediated Oxidation of Date Palm Waste: Preparation, Characterization, and Reinforcing Potential

et al. 2022

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Lignin-containing cellulose nanofibrils (LCNFs) have emerged as a new class of nanocelluloses where the presence of residual lignin is expected to impart additional attributes such as hydrophobicity or UV-absorption. In the present work, LCNFs with a lignin content between 7 and 15 wt% were prepared via a TEMPO-mediated oxidation as chemical pretreatment followed by high-pressure homogenization. The impact of the carboxyl content (CC) on the properties of the resulting LCNF gel, in terms of lignin content, colloidal properties, morphology, crystallinity, and thermal stability, were investigated. It was found that lignin content was significantly decreased at increasing CC. In addition, CC had a positive effect on colloidal stability and water contact angle, as well as resulting in smaller fibrils. This lower size, together with the lower lignin content, resulted in a slightly lower thermal stability. The reinforcing potential of the LCNFs when incorporated into a ductile polymer matrix was also explored by preparing nanocomposite films with different LCNF contents that were mechanically tested under linear and non-linear regimes by dynamic mechanical analysis (DMA) and tensile tests. For comparison purposes, the reinforcing effect of the LCNFs with lignin-free CNFs was also reported based on literature data. It was found that lignin hinders the network-forming capacity of LCNFs, as literature data shows a higher reinforcing potential of lignin-free CNFs. Nonetheless, the tensile strength of the acrylic matrix was enhanced by 10-fold at 10 wt% of LCNF content.

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