| Title |
Evaluating the Ability of Bone Char/nTiO2 Composite and UV Radiation for Simultaneous Oxidation and Adsorption of Arsenite |
| ID_Doc |
13887 |
| Authors |
Alkurdi, S; Al-Juboori, R; Bundschuh, J; Marchuk, A |
| Title |
Evaluating the Ability of Bone Char/nTiO2 Composite and UV Radiation for Simultaneous Oxidation and Adsorption of Arsenite |
| Year |
2022 |
| Published |
Sustainable Chemistry, 3, 1 |
| DOI |
10.3390/suschem3010002 |
| Abstract |
The reuse of waste materials for water treatment purposes is an important approach for promoting the circular economy and achieving effective environmental remediation. This study examined the use of bone char/titanium dioxide nanoparticles (BC/nTiO(2)) composite and UV for As(III) and As(V) removal from water. The composite was produced via two ways: addition of nTiO(2) to bone char during and after pyrolysis. In comparison to the uncoated bone char pyrolyzed at 900 C-degrees (BC900), nTiO(2) deposition onto bone char led to a decrease in the specific surface area and pore volume from 69 to 38 m(2)/g and 0.23 to 0.16 cm(3)/g, respectively. However, the pore size slightly increased from 14 to 17 nm upon the addition of nTiO2. The composite prepared during pyrolysis (BC/nTiO(2))P had better As removal than that prepared after pyrolysis with the aid of ultrasound (BC/nTiO(2))US (57.3% vs. 24.8%). The composite (BC/nTiO(2))P had higher arsenate oxidation than (BC/nTiO(2))US by about 3.5 times. Arsenite oxidation and consequent adsorption with UV power of 4, 8 and 12 W was examined and benchmarked against the composite with visible light and BC alone. The highest UV power was found to be the most effective treatment with adsorption capacity of 281 mu g/g followed by BC alone (196 mu g/g). This suggests that the effect of surface area and pore volume loss due to nTiO(2) deposition can only be compensated by applying a high level of UV power. |
| Author Keywords |
bone char; nTiO(2); pyrolysis; UV; visible light |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Emerging Sources Citation Index (ESCI) |
| EID |
WOS:001187557400001 |
| WoS Category |
Chemistry, Multidisciplinary; Green & Sustainable Science & Technology; Engineering, Chemical |
| Research Area |
Chemistry; Science & Technology - Other Topics; Engineering |
| PDF |
https://www.mdpi.com/2673-4079/3/1/2/pdf?version=1645060510
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