BMC Chemistry, Год журнала: 2025, Номер 19(1)

Опубликована: Май 11, 2025

Abstract Dyes are released into bodies of water as the textile industry expands in response to growth global population. These dyes have severe effects on environment, including wildlife, terrestrial species, and humans. This study explores synthesis, characterization, application an algal-based magnetic biochar nanocomposite for efficient adsorption azocarmine G2 (ACG2) dye from aqueous solutions. The (Fe 3 O 4 @BC) was characterized by Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR). Batch experiments were performed assess impact initial concentration (25 100 mg / L), contact time (up 300 min), pH (1–3) temperature (298 328 K). nano-composite achieved a maximum capacity (q max ) 71.3 mg/g at 1, with equilibrium reached within 240 min. Adsorption kinetics followed pseudo-second-order model (R2 = 0.99), while isotherm analysis fit well Langmuir 0.98), indicating monolayer adsorption. However, Freundlich provided better fit, that multilayer covered heterogeneous surface chemisorption process. demonstrated > 90% efficiency ACG2 under variety conditions, reusability tests showing retention over 80% after five regeneration cycles. focusses synthesis algae-derived properties, enhancing its post-adsorption separation. Azocarmine (ACG2), hazardous azo dye, is addressed herein first time, establishing novelty this research domain. Furthermore, innovative Fe @BC adsorbent compound effectively resolves issue recyclability. results highlight viable sustainable adsorbent, demonstrating exceptional capacity, simplified separation processes, Therefore, it deemed appropriate extensive applications wastewater treatment processes.

Язык: Английский