Synthesis and characterization of phosphonic acid functionalized maleic anhydride co-polymer for recovering scandium: Acidic red mud leachate as a case study

Hamza, Mohammed F.; Mira, Hamed; Ning, Shunyan; Yin, Xiangbiao; Wang, Ji; Wei, Yuezhou; Guibal, Eric

doi:10.1016/j.colsurfa.2024.133875

Colloids and Surfaces A: Physicochemical and Engineering Aspect

2024

DOI: 10.1016/j.colsurfa.2024.133875

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Synthesis and characterization of phosphonic acid functionalized maleic anhydride co-polymer for recovering scandium: Acidic red mud leachate as a case study

Mohammed F. Hamza,

Hamed Mira,

Shunyan Ning

et al.

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2024

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Cited by 2 publications

References 90 publications

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Phytochemical Analysis and Multifaceted Biomedical Activities of Nitraria retusa Extract as Natural Product-Based Therapies

Khowdiary,

Alatawi,

Alhowiti

et al. 2024

Life

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This study examined the phytochemical profile and biomedical activities of Nitraria retusa, a halophytic and drought-resistant shrub. HPLC analysis showed gallic acid (1905.1 μg/g), catechin (1984.1 μg/g), and ellagic acid (2671.1 μg/g) as the primary constituents, while FT-IR analysis revealed a complex organic profile with significant functional groups. The extract demonstrated strong antioxidant activity in DPPH assays, outperforming ascorbic acid (IC50 = 18.7 ± 1.0 μg/mL) with an IC50 of 16.4 ± 4.4 μg/mL. It demonstrated specific antiproliferative effects on cancer cell lines as it showed selective cytotoxicity against cancer cell lines; normal WI38 cells were largely unaffected, showing 50.0% viability at 125 μg/mL. The most sensitive cell line was Caco2, which showed 50.0% viability at 125 μg/mL. Anti-diabetic properties were exhibited by means of inhibition of α-amylase (IC50 = 68.2 ± 4.2 μg/mL) and α-glucosidase (IC50 = 22.8 ± 3.3 μg/mL). Additionally, antimicrobial activity was observed to be broad-spectrum, and it was most effective against E. coli (32.6 mm inhibition zone at 400 μg/mL) and Penicillium glabrum (35.3 mm at 400 μg/mL). These findings highlight the potential of N. retusa in developing plant-based therapeutic approaches.

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Phytochemical Analysis and Multifaceted Biomedical Activities of Nitraria retusa Extract as Natural Product-Based Therapies

Khowdiary,

Alatawi,

Alhowiti

et al. 2024

Life

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Synthesis of Sulfur-Grafted Chitosan Biopolymers and Improvement to Their Sorption of Silver Ions from Different Aqueous Solutions

Hamza,

El-Habibi,

Abdel-Rahman

et al. 2024

Sustainability

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A functionalized chitosan thiourea composite (CH-TU) was successfully synthesized using formaldehyde as a crosslinking agent for enhancing silver recovery from different aqueous solutions. Comparison sorption studies with a non-functionalized composite (CH-F) as a reference material were conducted. Grafting led to an improvement in the sorption performances, i.e., 0.763 mmol Ag g−1 for CH-F vs. 2.125 mmol Ag g−1 for CH-TU. The pseudo-first-order rate equation (PFORE) was fitted to the sorption kinetics at saturation times of 40 and 30 min for CH-F and CH-TU, respectively, while the sorption isotherms were fitted with Langmuir and Sips equations for both sorbents. Fourier transform infrared (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), nitrogen sorption–desorption isotherms (BET-surface area), elemental analysis, thermogravimetric analysis (TGA) and pH of the zero charge (pHpzc) were used to characterize and investigate the sorption mechanism. Sorption was performed three times to check the reproducibility, while the sorption performances were stable over 20 cycles, with a limited decrease in performance (5 and 3% for CH-F and CH-TU, respectively). Nitric acid solution (0.3 M) was efficient for desorbing the adsorbed metal ions. The grafted sorbent with thiourea is considered as a promising tool for recovering Ag(I) from acidic waste leachate derived from waste spent films.

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Synthesis and characterization of phosphonic acid functionalized maleic anhydride co-polymer for recovering scandium: Acidic red mud leachate as a case study

Cited by 2 publications

References 90 publications

Phytochemical Analysis and Multifaceted Biomedical Activities of Nitraria retusa Extract as Natural Product-Based Therapies

Phytochemical Analysis and Multifaceted Biomedical Activities of Nitraria retusa Extract as Natural Product-Based Therapies

Synthesis of Sulfur-Grafted Chitosan Biopolymers and Improvement to Their Sorption of Silver Ions from Different Aqueous Solutions

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