Adsorption of Hexavalent Chromium by Sodium Alginate Fiber Biochar Loaded with Lanthanum

Lanthanun oxide (La2O3) is a lanthanum chemical compound incorporates sensible anionic complexing ability; however, it lacks stability at low pH scale. Biochar fibers will give the benefit of their massive space and plethoric uses on surface to support metal compound. Herein, wet spinning technology was used load La3+ onto sodium alginate fiber, convert into La2O3 through carbonization. The La2O3-modified biochar (La-BC) fiber characterized by SEM, XRD XPS, etc. An adsorption experiment proved that La-BC showed an excellent capacity for chromates, its saturation about 104.9 mg/g. information suggested in step with both Langmuir Freundlich models, following pseudo-second-order assimilation mechanics, which Cr (VI) single-phase polyphase adsorption, mainly adsorption. thermodynamic parameters process spontaneous endothermic. mechanistic investigation revealed mechanism may include electrostatic interaction, ligand exchange, or complexation. Moreover, co-existing anions regeneration experiments recyclable has good prospects field chrome-containing wastewater removal.