Ball milling enhanced magnetic corn straw biochar for peroxyacetic acid activation towards efficient degradation of sulfadiazine

文献类型： 外文期刊

第一作者： Zeng, Chenyu

作者： Zeng, Chenyu;Qian, Shufang;Ma, Yongfei;Chen, Xi;Zhu, Jinyao;Mu, Rui;Deng, Zhikang;Zhang, Zulin;Li, Ping;Qi, Xuebin;Ma, Xiao;Ding, Yongzhen;Zhang, Zulin

作者机构：

关键词： Corn straw biochar; Ball milling; Magnetic modification; Peroxyacetic acid; Sulfadiazine; Corn straw biochar; Ball milling; Magnetic modification; Peroxyacetic acid; Sulfadiazine

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.9； 五年影响因子：6.0 ）

ISSN： 0926-6690

年卷期： 2023 年 204 卷

页码：

收录情况： SCI

摘要： A novel heterogeneous catalyst of ball-milling magnetic corn straw biochar (BMCBC) was the first time syn-thesized and employed to activate peroxyacetic acid (PAA) for efficiently degrading sulfadiazine (SDZ). The superior porous structure and the magnetic Fe3O4 of BMCBC guaranteed its higher activation efficiency than that of CBC. The results showed that 93% of SDZ was removed by PAA/BMCBC system within 60 min. Solution pH, CO32-, NO3 - and Cl- concentrations were the crucial environmental factors affecting the degradation process of SDZ. The electron paramagnetic resonance (EPR), quenching experiments, and Raman spectra analysis indicated that center dot OH and R-O center dot were the main contributors to SDZ degradation. The transformed products (TPs) generated in PAA/BMCBC system were less toxic compared to those of SDZ. Three degradation pathways of SDZ were pro-posed and hydroxylation and S-N bond breakage by center dot OH and R-O center dot attacking were the dominant degradation pathways of SDZ in PAA/BMCBC system. Also, PAA/BMCBC system built in this study exhibited excellent removal performance for SDZ in actual waters including river water (84.32%), lake water (73.95%), tap water (93.30%) and drinking water (91.29%). Additionally, BMCBC exhibited satisfactory environmental safety in a wide pH range (from 3 to 11) with low leaching levels of Fe. The good magnetic sensitivity of BMCBC enabled it to be easily collected and it performed outstanding sustainable activation performance for PAA even after five reuse cycles. This study developed a promising method for antibiotics (e.g., SDZ) elimination, in addition to that the resource utilization of agricultural wastes (e.g., corn straw) was achieved.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序