Raval, Nirav P.Nirav P.RavalKumar, ManishManishKumar2025-08-312025-08-312022-11-0110.1016/j.biortech.2022.1279182-s2.0-85139250392https://d8.irins.org/handle/IITG2025/2588436087649Arsenic (As) can geogenically and anthropogenically contaminate the potable water resources and undoubtedly reduces its availability for human consumption. To circumvent this predicament, present study focuses on the development of a novel biosorbent by impregnating calcium cross-linked polyuronate (alginate) beads (CABs) with bilayer–oleic coated magnetite nanoparticles (CAB@BOFe) for As(V) removal. Initially, the system parameters (i.e., adsorbents dose (0.1– 3.0 g L^–1), pH (4.0–13), reaction times (0–180 min) and sorbate concentrations (10–150 µg L^–1)) were optimized to establish adsorbent at the lab-scale. CAB@BOFe had higher monolayer (ad)sorption capacity (∼62.5 µg g⁻¹, 120 min) than CABs (∼17.9 µg g⁻¹, 180 min). Electrostatic/Ion-dipole interactions and surface-complexation mechanisms mediated As(V) sorption onto CAB@BOFe mainly obeyed Langmuir isotherm (R² ∼ 0.9) and well described by intraparticle diffusion process. Furthermore, it demonstrated an excellent arsenate removal performance from the single/multiple anionic contaminants simulated water samples which supported its prospective field applicability.falseAlginate | Arsenate | CAB@BOFe | Simulated water sample | Surface complexationArticle18732976November 20225127918arJournal5WOS:000870525100003