One of the obstacles in water treatment is heavy metals. Heavy metals are extremely hazardous to human health, including organ damage and cancer. The main goal of this research is to assess the potential of Conocarpus Erectus leaves to produce raw biochar (BC) and magnetic biochar (MBC) as low-cost and environmentally friendly biosorbents for the separation of the toxic metal ion Co(II), suggesting a new greener options to conventional methodologies for eliminating potentially toxic metals, with promising outcomes in the decontamination of aquatic environments. Energy dispersive spectroscopy, Fourier transform infrared spectram, field emission scanning electron microscopy, vibrating sample magnetometer, and surface area were utilized for absorbent characterization. The adsorption effectiveness of the BC and the MBC were compared to each other. The isotherm analysis revealed that the adsorption of Co(II) on both the original biochar and the magnetic biochar suited the Freundlich model well. The maximum adsorption ability calculated using the Langmuir model for MBC was 400 mg/g, which was 40 times larger than BC. Kinetic analyses revealed that the absorption process data for both adsorbents matched pseudo-second-order. Magnetic biochar has outperformed original biochar in removing Co(II) from aqueous solutions due to its favorable magnetic properties, high surface area, and excellent adsorption capacity.

水处理的障碍之一是重金属。重金属对人体健康极为有害，包括器官损伤和癌症。本研究的主要目的是评估直立果康叶生产生生物炭 (BC) 和磁性生物炭 (MBC) 作为低成本和环保生物吸附剂用于分离有毒金属离子 Co(II) 的潜力，这表明为消除潜在有毒金属的传统方法提供了一种新的更环保的选择，在水环境的净化方面取得了可喜的成果。能量色散光谱、傅里叶变换红外光谱、场发射扫描电子显微镜、振动样品磁力计和表面积用于吸收剂表征。将 BC 和 MBC 的吸附效果相互比较。等温线分析表明，Co(II) 在原始生物炭和磁性生物炭上的吸附非常适合 Freundlich 模型。使用 Langmuir 模型计算的 MBC 的最大吸附能力为 400 mg/g，是 BC 的 40 倍。动力学分析表明，两种吸附剂的吸收过程数据均符合伪二级。磁性生物炭由于其良好的磁性、高表面积和出色的吸附能力，在从水溶液中去除 Co(II) 方面优于原始生物炭。动力学分析表明，两种吸附剂的吸收过程数据均符合伪二级。磁性生物炭由于其良好的磁性、高表面积和出色的吸附能力，在从水溶液中去除 Co(II) 方面优于原始生物炭。动力学分析表明，两种吸附剂的吸收过程数据均符合伪二级。磁性生物炭由于其良好的磁性、高表面积和出色的吸附能力，在从水溶液中去除 Co(II) 方面优于原始生物炭。