Biochar has been successfully used for remediation of inorganic and organic pollutant from aqueous and soil medium. Easy availability of raw materials, low-cost preparation, an alternative for solid waste management and efficient removal of pollutants make biochar a better option in comparison to conventional adsorbents. In the present study, effect of iron modified biochar (MBC) prepared from bamboo (Fe-BBm), bagasse (Fe-BBg) and tyre (Fe-Ty) was investigated on fixed bed adsorption of lead (Pb) and copper (Cu). Different doses of prepared biochar (BC) without modification (BBm, BBg and Ty) were also tested and compared. Mathematical parameters of breakthrough curves (BTC) were calculated to understand the adsorption of Pb and Cu by BC and MBC. The results revealed that equilibrium adsorption (qe) and removal efficiency (R%) increased with increase in dose of BC and MBC. MBC showed better breakthrough profile and adsorption than BC for Pb removal. Maximum removal of Pb (75.75%) and qe (0.15 mg/g) was done by 10% FeTy. In case of Cu removal, maximum removal (59.44%) and qe (0.12 mg/g) was found for 10% BBm. Experimental results were analysed by different models such as Thomas, Adam-Bohart and Wolborska. Experimental results of both Pb and Cu adsorption fitted well to Thomas model with R² (0.94 for Pb and 0.93 for Cu). FeTy and BBm proved better adsorbents for Pb and Cu that can be upscaled for heavy metal removal from polluted fields and large-scale environmental applications.

生物炭已成功用于修复水介质和土壤介质中的无机和有机污染物。与传统吸附剂相比，原料易得、制备成本低、可替代固体废物管理和有效去除污染物，使生物炭成为更好的选择。在本研究中，研究了由竹子 (Fe-BBm)、甘蔗渣 (Fe-BBg) 和轮胎 (Fe-Ty) 制备的铁改性生物炭 (MBC) 对固定床吸附铅 (Pb) 和铜 (Cu) 的影响。 ）。还测试和比较了未经修饰的不同剂量的制备生物炭 (BC)（BBm、BBg 和 Ty）。计算穿透曲线 (BTC) 的数学参数以了解 BC 和 MBC 对 Pb 和 Cu 的吸附。结果表明，平衡吸附（qe）和去除效率（R%）随着BC和MBC剂量的增加而增加。MBC 在 Pb 去除方面表现出比 BC 更好的穿透曲线和吸附。使用 10% FeTy 可最大程度去除 Pb (75.75%) 和 qe (0.15 mg/g)。在去除 Cu 的情况下，发现 10% BBm 的最大去除量 (59.44%) 和 qe (0.12 mg/g)。实验结果由不同的模型，如 Thomas、Adam-Bohart 和 Wolborska 进行分析。Pb和Cu吸附的实验结果与R的Thomas模型非常吻合 实验结果由不同的模型，如 Thomas、Adam-Bohart 和 Wolborska 进行分析。Pb和Cu吸附的实验结果与R的Thomas模型非常吻合 实验结果由不同的模型，如 Thomas、Adam-Bohart 和 Wolborska 进行分析。Pb和Cu吸附的实验结果与R的Thomas模型非常吻合²（Pb 为 0.94，Cu 为 0.93）。FeTy 和 BBm 被证明是更好的 Pb 和 Cu 吸附剂，可以放大用于从污染田和大规模环境应用中去除重金属。