Bisphosphonate functionalized biogenic nanostructured silicon carbide for uranium and scandium recovery

Chemosphere, Journal Year: 2025, Volume and Issue: 379, P. 144404 - 144404

Published: April 24, 2025

The extraction and recovery of metals from wastewater produced as a result anthropogenic activities such ore processing mining, address not only environmental concerns but also offer economic benefits by reducing reliance on primary ores. Adsorption is commonly used approach for decontamination effluent containing low concentrations metals, most adsorbents degrade quickly are inadequate in the selective removal metals. study focuses preparation utilization biogenic nanostructured silicon carbide (nSiC) functionalized with bisphosphonates (BP-nSiC) recovering U Sc effectively metal-containing streams. high-temperature self-propagating magnesiothermic reduction was selected to produce agricultural residue, i.e., barley husk. nSiC then conjugated bisphosphonates, which act metal chelator extract tailing leached solutions, respectively. BP-nSiC exhibited adsorption capacity 58.76 μmol/g 48.07 Sc, respectively, at pH 1. reusability potential tested flow-through setup showing good stability withstand least 20 consecutive cycles without significant drop capacity, highlighting its repeated use applications. capable indicating that adsorbent could be recover effectively.

Language: Английский

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

Sustainability, Journal Year: 2024, Volume and Issue: 16(13), P. 5280 - 5280

Published: June 21, 2024

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

Language: Английский

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

Life, Journal Year: 2024, Volume and Issue: 14(12), P. 1629 - 1629

Published: Dec. 9, 2024

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

Language: Английский