Evaluating the Ability of Bone Char/nTiO2 Composite and UV Radiation for Simultaneous Oxidation and Adsorption of Arsenite

The reuse of waste materials for water treatment purposes is an important approach promoting the circular economy and achieving effective environmental remediation. This study examined use bone char/titanium dioxide nanoparticles (BC/nTiO2) composite UV As(III) As(V) removal from water. was produced via two ways: addition nTiO2 to char during after pyrolysis. In comparison uncoated pyrolyzed at 900 °C (BC900), deposition onto led a decrease in specific surface area pore volume 69 38 m2/g 0.23 0.16 cm3/g, respectively. However, size slightly increased 14 17 nm upon nTiO2. prepared pyrolysis (BC/nTiO2)P had better As than that with aid ultrasound (BC/nTiO2)US (57.3% vs. 24.8%). higher arsenate oxidation by about 3.5 times. Arsenite consequent adsorption power 4, 8 12 W benchmarked against visible light BC alone. highest found be most capacity 281 µg/g followed alone (196 µg/g). suggests effect loss due can only compensated applying high level power.