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- W4200129201 abstract "The magnetic biochar catalyst ([email protected]) was synthesized by pyrolyzing Fe–tanned collagen fiber based on the tanning process and used as a high–efficiency and recyclable persulfate (PS) activator to degrade refractory dyes. In this study, methylene blue (MB) was chosen as a model pollutant to evaluate the performance of the [email protected]/PS system. Results illustrated that MB was completely removed within 20 min with a rate constant (kobs) of 0.2246 min–1, which was much higher than that of pure biochar (0.0497 min–1), and high mineralization efficiency (92%) for MB degradation was obtained. Notably, the MB removal rate still reached 72% after 20 cycles. The high catalytic activity and excellent recycling performance could be attributed to the uniformly dispersed iron species, abundant oxygen functional groups, and defective carbon matrix. Radical quenching experiments and electron paramagnetic resonance studies illustrated that SO4•– was the predominant free radical for MB degradation. Moreover, other refractory dyes could also be rapidly and efficiently removed from the [email protected]/PS system. This work is expected to propose a promising catalyst for the degradation of refractory dyes and open a new possibility for the durable removal of refractory organic dyes." @default.
- W4200129201 created "2021-12-31" @default.
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- W4200129201 date "2022-02-01" @default.
- W4200129201 modified "2023-10-17" @default.
- W4200129201 title "An iron–based biochar for persulfate activation with highly efficient and durable removal of refractory dyes" @default.
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- W4200129201 doi "https://doi.org/10.1016/j.jece.2021.106979" @default.
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