Biochar from bamboo culm was produced at three different temperatures (350, 450 and 550°C) and evaluated concerning the effect of biochar production temperature on atrazine adsorption. The biochars were characterized by elemental composition, point of zero charge (pHpzc), N₂ physisorption, Scanning Electron Microscopy (SEM), and Fourier Transform Infrared (FTIR) Spectroscopy. Adsorption experiments were performed in a batch mixer. Kinetic and equilibrium experimental data were obtained for the three biochars. The elemental composition and FTIR analysis indicated enhanced aromaticity of the biochar as the production temperature increased. The N₂ physisorption and SEM analysis of the biochars showed an increase in the porosity and specific surface area as the production temperature increased, which can favor the atrazine adsorption process. The experimental equilibrium data were well described by the Langmuir isotherm. The biochar produced at 450°C presented the highest atrazine experimental adsorption capacity, which may be related to the micro-mesopore ratio and surface area exhibited by this biochar. From the kinetic data, similar equilibrium times for the three biochars were achieved. To describe the kinetic adsorption data for the biochars, phenomenological models based on adsorption on the adsorbent surface, external diffusion and internal diffusion were applied, in which the internal diffusion model presented the best fit of the experimental data for all biochars. The results showed the influence of temperature production on the biochars properties and displayed its effects in the removal efficiency of atrazine from water, wherein the biochar produced at 450°C presented the best performance for atrazine adsorption.

竹秆生物炭在三种不同的温度（350、450 和 550°C）下生产，并评估了生物炭生产温度对莠去津吸附的影响。生物炭的特征在于元素组成、零电荷点 (pHpzc)、N ₂物理吸附、扫描电子显微镜 (SEM) 和傅里叶变换红外 (FTIR) 光谱。吸附实验在间歇式混合器中进行。获得了三种生物炭的动力学和平衡实验数据。元素组成和 FTIR 分析表明，随着生产温度的升高，生物炭的芳香性增强。N ₂生物炭的物理吸附和 SEM 分析表明，随着生产温度的升高，孔隙率和比表面积增加，这有利于阿特拉津的吸附过程。Langmuir 等温线很好地描述了实验平衡数据。在 450°C 生产的生物炭表现出最高的阿特拉津实验吸附能力，这可能与该生物炭表现出的微介孔比和表面积有关。从动力学数据来看，三种生物炭的平衡时间相似。为了描述生物炭的动力学吸附数据，应用了基于吸附剂表面吸附、外部扩散和内部扩散的现象学模型，其中内部扩散模型呈现了所有生物炭实验数据的最佳拟合。