College of Life Sciences, Jilin Agricultural University, Changchun 130118, China.
Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun 130118, China.
Int J Mol Sci. 2022 Oct 20;23(20):12579. doi: 10.3390/ijms232012579.
In this study, a magnetic biochar with a unique 3D network structure was synthesized by using a simple and controllable method. In brief, the microbial filamentous fungus was used as a template, and Fe was added to the culture process, which resulted in uniform recombination through the bio-assembly property of fungal hyphae. Finally, magnetic biochar (BMFH/FeO) was synthesized by controlling different heating conditions in a high temperature process. The adsorption and Fenton-like catalytic performance of BMFH/FeO were investigated by using the synthetic dye malachite green (MG) and the antibiotic tetracycline hydrochloride (TH) as organic pollutant models. The results showed that the adsorption capacity of BMFH/FeO for MG and TH was 158.2 and 171.26 mg/g, respectively, which was higher than that of most biochar adsorbents, and the Fenton-like catalytic degradation effect of organic pollutants was also better than that of most catalysts. This study provides a magnetic biochar with excellent performance, but more importantly, the method used can be effective in further improving the performance of biochar for better control of organic pollutants.
在这项研究中，通过一种简单可控的方法合成了具有独特 3D 网络结构的磁性生物炭。简而言之，利用丝状真菌作为模板，并在培养过程中添加 Fe，通过真菌菌丝的生物组装特性实现均匀重组。最后，通过在高温过程中控制不同的加热条件合成磁性生物炭（BMFH/FeO）。采用合成染料孔雀石绿（MG）和抗生素盐酸四环素（TH）作为有机污染物模型，研究了 BMFH/FeO 的吸附和类 Fenton 催化性能。结果表明，BMFH/FeO 对 MG 和 TH 的吸附容量分别为 158.2 和 171.26mg/g，高于大多数生物炭吸附剂，对有机污染物的类 Fenton 催化降解效果也优于大多数催化剂。本研究提供了一种性能优异的磁性生物炭，但更重要的是，所采用的方法可以有效地进一步提高生物炭的性能，从而更好地控制有机污染物。
