| Title |
Exploitation of expired cellulose biopolymers as hydrochars for capturing emerging contaminants from water |
| ID_Doc |
8576 |
| Authors |
Farghal, HH; Nebsen, M; El-Sayed, MMH |
| Title |
Exploitation of expired cellulose biopolymers as hydrochars for capturing emerging contaminants from water |
| Year |
2023 |
| Published |
Rsc Advances, 13.0, 29 |
| Abstract |
Expired chemicals pose a potential environmental threat to humans and living organisms. Herein, we proposed a green approach whereby expired cellulose biopolymers were converted to hydrochar adsorbents and tested for removing the emerging pharmaceutical contaminants of fluoxetine hydrochloride and methylene blue from water. A thermally stable hydrochar was produced with an average particle size of 8.1 & PLUSMN; 1.94 nm and a mesoporous structure that exhibited a larger surface area than the expired cellulose by 6.1 times. The hydrochar was efficient in removing the two contaminants with efficiencies that reached above 90% under almost neutral pH conditions. Adsorption exhibited fast kinetics and regeneration of the adsorbent was successful. The adsorption mechanism was hypothesized in view of the Fourier Transform Infra-Red (FTIR) spectroscopy and pH effect measurements to be mainly electrostatic. A hydrochar/magnetite nanocomposite was also synthesized, and its adsorption behavior for both contaminants was tested and it revealed an enhanced percent removal relative to the bare hydrochar by 27.2% and 13.1% for FLX and MB, respectively. This work supports the strategies for zero waste management and the circular economy. |
| PDF |
https://pubs.rsc.org/en/content/articlepdf/2023/ra/d3ra02965d
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