Activation of Peroxymonosulfate by Fe, O Co-Embedded Biochar for the Degradation of Tetracycline: Performance and Mechanisms

Catalysts, Год журнала: 2024, Номер 14(9), С. 556 - 556

Опубликована: Авг. 24, 2024

In recent years, pollution stemming from pharmaceuticals has garnered widespread global concern, which exacerbates the ecological risk to both surface and groundwater. current study, Fe O co-embedded biochar (Fe-O-BC) was synthesized through a one-step pyrolysis procedure with corncob serving as feedstock. The fabricated Fe-O-BC catalysts were characterized by various techniques employed for activation of peroxymonosulfate (PMS) degrade tetracycline (TC). TC rapidly degraded within 40 min, degradation rate 0.1225 min−1, much higher than those O-BC/PMS (0.0228 min−1) Fe-BC/PMS (0.0271 under same conditions. effects PMS dosage, dose, initial pH value coexisting anions investigated. Finally, mechanism oxidation in catalytic system implored experiments determining active sites radical scavenging experiments. C-O-Fe bond catalyst confirmed be dominant accelerating degradation. Free diffused HO•, surface-bound HO• SO4•− O2•−participated reaction absorbed SO4•−, predominantly contributed This study provides an efficient green alternative pharmaceutical wastewater treatment co-doped catalyst-induced heterogeneous process.

Язык: Английский

Efficient activation of N and S co‐doped magnetic biochar for peroxomonosulfate degradation of tetracycline

Asia-Pacific Journal of Chemical Engineering, Год журнала: 2024, Номер unknown

Опубликована: Сен. 15, 2024

Abstract N‐S co‐doped magnetic biochar (NSMBC) was synthesized by a two‐step pyrolysis technique and used for the degradation of tetracycline (TC) activated persulfate (peroxomonosulfate [PMS]). Batch experiments showed that temperature doping ratio affected catalytic performance NSMBC. The rate TC in NSMBC/PMS system prepared at 350°C with 33% up to 94.50%, exhibited strong pH adaptability resistance environmental interference. results free radical burst electron paramagnetic resonance (EPR) spectroscopy indicated pathway (SO 4 •− ) degradation. In addition, NSMBC has good stability excellent properties favorable separation recovery. This study not only provides new idea synthesis efficient stable catalysts but also green resourceization pomelo peel waste.

Язык: Английский

Accelerating peroxymonosulfate activation over fiber-shaped Fe@Fe3C/CNF for ultrafast tetracyclines degradation：Active site synergy and mechanisms

Journal of environmental chemical engineering, Год журнала: 2024, Номер unknown, С. 114999 - 114999

Опубликована: Ноя. 1, 2024

Язык: Английский