Activated carbon (AC) was prepared from Diplotaxis acris biomass. The change in the surface functional groups between the biomass raw material and the produced AC was detected using Fourier-transform infrared (FTIR) and Raman spectroscopy. The thermal stability of the prepared AC was determined by using thermogravimetric analysis (TGA). It has a surface area of 40.21 m²/g which gave evidence for its external porous surface. The surface porosity and the graphite properties of the prepared AC were detected by scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis, respectively. The amount of adsorbed benzene on the AC surface was determined using a gas chromatograph supported with a flame ionization detector (GC-FID) after extraction in methanol. The adsorption capacity of benzene was 5.4 mg/g at room temperature (25°C), and its removal efficiency reached 95.58% for low benzene concentration (1000 mg/m³). The obtained results were well fitted by the Langmuir isotherm model. The adsorption kinetics of benzene followed the pseudo-second-order kinetic model accompanied by the intra-particle diffusion model. The reuse of the AC samples for three consecutive cycles retained the removal efficiency by more than 75% of its original efficiency. Overall, the study revealed that the prepared AC from Diplotaxis acris biomass has a great potential in the removal of benzene from polluted air.

活性炭（AC）由Diplotaxis acris生物质制备。使用傅立叶变换红外（FTIR）和拉曼光谱法检测生物质原料和生成的AC之间的表面官能团的变化。制备的AC的热稳定性通过热重分析（TGA）确定。它的表面积为40.21 m ²/ g为其外部多孔表面提供了证据。通过扫描电子显微镜（SEM）和X射线衍射（XRD）分析分别检测所制备的AC的表面孔隙率和石墨性质。在甲醇中萃取后，使用配备有火焰离子化检测器（GC-FID）的气相色谱仪确定AC表面上的苯吸附量。室温（25°C）下苯的吸附容量为5.4 mg / g，低苯浓度（1000 mg / m ^3）时苯的去除率达到95.58％）。Langmuir等温线模型很好地拟合了获得的结果。苯的吸附动力学遵循伪二级动力学模型，并伴随着颗粒内扩散模型。AC样品连续三个循环重复使用，去除效率保持了其原始效率的75％以上。总体而言，该研究表明，用双线拟南芥生物质制得的AC具有从污染空气中去除苯的巨大潜力。