Preparation of Cellulose-Grafted Acrylic Acid Stabilized Jujube Branch Biochar-Supported Nano Zero-Valent Iron Composite for Cr(VI) Removal from Water

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(6), P. 441 - 441

Published: March 14, 2025

A stabilized biochar (BC)–nano-scale zero-valent iron (nZVI) composite (BC-nZVI@Cell-g-PAA) was prepared using cellulose-grafted polyacrylic acid (Cell-g-PAA) as the raw material through in situ polymerization and liquid-phase reduction methods for remediation of hexavalent chromium (Cr(VI))-contaminated water. BC-nZVI@Cell-g-PAA characterized by XRD, FT-IR, SEM, BET, TEM, XPS. According to batch experiments, under optimized conditions (Cr(VI) concentration 50 mg/L, pH = 3, dosage 2 g/L), achieved maximum Cr(VI) removal efficiency (99.69%) within 120 min. Notably, BC, a carrier, high dispersion nZVI its porous structure, effectively preventing particle agglomeration improving reaction activity. Simultaneously, functional groups on surface Cell-g-PAA provided excellent protection nZVI, significantly suppressing oxidative deactivation. Furthermore, reduced insoluble trivalent chromium(Cr(III)) species them immobilization. The synergistic effects physical adsorption chemical greatly contributed Cr(VI). Remarkably, exhibited reusability with 62.4% after five cycles, demonstrating potential promising remediating Cr(VI)-contaminated In conclusion, not only demonstrated remarkable but also showcased practical applications environmental remediation, evidenced sustained performance over multiple reuse cycles. Moreover, Cr(VI), toxic carcinogenic substance, poses significant risks aquatic ecosystems human health, underscoring importance developing effective from contaminated

Language: Английский

Electric field-driven preparation of highly dispersed ENP membrane and its study on Cr(VI) removal from water

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162581 - 162581

Published: April 1, 2025

Language: Английский