The study presents the removal of Cu(II) ions using bio‐adsorbents. The applicability of the continuous column process using hyacinth root, rice husk, blackberry leaves, and guava leaves is reported in this study. The effects of solution pH were studied in batch mode, and other different process parameters such as bed depth, rate of flow, influent solution concentration were investigated and optimized in the continuous mode. The breakthrough curves were obtained for various initial metal concentrations (10, 20, and 30 mg.L⁻¹), flow rates (10, 30, and 40 ml.min⁻¹), and bed height (4, 6, and 10 cm). The optimum operating conditions were 10 cm bed depth, 10 ml.min⁻¹ flow rate, 10 mg.L⁻¹ influent concentration, and pH 6. The breakthrough time was increased with increasing bed height and decreasing flow rate and influent concentration. The Freundlich isotherm model was in good agreement (R² = .9247–.9987) with the batch experimental data whereas, the continuous experimental data fitted well in the Thomas model to illustrate the best performance of the fixed‐bed process. FTIR spectra and SEM images verify the sorption capacity of the adsorbents. The Cu(II) adsorption capacities of the adsorbents were compared, and the hyacinth root gives the best result compare to the others. Hence, the results proved the effectiveness of the adsorbents for the removal of Cu(II) ions.

中文翻译：

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在固定床连续床模式下使用生物吸附剂去除Cu（II）离子的对比研究和放大设计

该研究提出了使用生物吸附剂去除Cu（II）离子的方法。该研究报道了使用风信子根，稻壳，黑莓叶和番石榴叶的连续柱法的适用性。以分批模式研究了溶液pH值的影响，并以连续模式研究并优化了其他不同的工艺参数，例如床深度，流速，进水溶液浓度。对于各种初始金属浓度（10、20和30 mg.L ^-1），流速（10、30和40 ml.min ^-1）和床高（4、6和10），获得了穿透曲线厘米）。最佳操作条件为10厘米的床深度，10 ml.min ^-1的流速，10 mg.L ^-1进水浓度和pH值6。穿透时间随床高增加，流速和进水浓度降低而增加。Freundlich等温线模型与批处理实验数据吻合良好（R ² = .9247–.9987），而连续实验数据在Thomas模型中拟合得很好，说明了固定床工艺的最佳性能。FTIR光谱和SEM图像验证了吸附剂的吸附能力。比较了吸附剂对Cu（II）的吸附能力，风信子根与其他吸附剂相比效果最好。因此，结果证明了吸附剂对去除Cu（II）离子的有效性。