| Title |
Development of bifunctional biochar/iron oxide composites for tetracycline removal from synthetic wastewater |
| ID_Doc |
13070 |
| Authors |
Fuentes, PA; Pailañir, MK; Mella, SR; Quijon, MEG; Bernardi, TM; Lemus, MC |
| Title |
Development of bifunctional biochar/iron oxide composites for tetracycline removal from synthetic wastewater |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.jwpe.2024.105509 |
| Abstract |
In this work, we studied the effect of physicochemical properties of synthesized biochar/iron oxide composites on tetracycline (TC) removal from an aqueous system. The TC removal involved adsorption and degradation using Fenton-like and Photo-Fenton-like reactions. The results showed that the adsorption capacity of synthesized materials inversely varied with the pyrolysis temperature, achieving removal percentages of 72 %, 65 %, and 56 % for materials developed at pyrolysis temperatures of 400 degrees C, 500 degrees C, and 600 degrees C, respectively. Regarding the Fenton-like and Photo-Fenton-like processes, BC-500-m exhibited the best catalytic performance attributed to its structural conformation and phase composition of iron oxide. This enabled the removal of 84 % of tetracycline. BC-500-m also showed a low reaction rate, resulting in a 53 % removal of TC through the Photo- Fenton process. However, a high degradation capacity and potentially mineralizable by-products into CO2 2 and H2O 2 O suggest that photo assistance establishes a cleaner and more ecosystem-friendly reaction mechanism. The reuse capacity decreased from 84 % to 12.5 % after five cycles, indicating a reduced availability of active sites to remove TC due to the possible generation of complexes between Fe+2 +2 and the TC. It is a significant advancement that through the thermochemical valorization of lignocellulosic resources such as brewer's spent grains (BSG), it is possible to establish sustainable and ecosystem-friendly bifunctional removal mechanisms capable of mediating the remediation of water with the presence of pharmaceuticals through a circular economy. |
| Author Keywords |
Water remediation; Emerging contaminants; Waste valorization; Biochar/Fe-composites; Adsorption-oxidation bifunction |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001285937100001 |
| WoS Category |
Engineering, Environmental; Engineering, Chemical; Water Resources |
| Research Area |
Engineering; Water Resources |
| PDF |
https://doi.org/10.1016/j.jwpe.2024.105509
|