Considering the toxicity, the removal of heavy metals from the liquid effluent is of great significance. This article addresses the impact of the adsorbent bed height and flowrate on the adsorption performance and breakthrough curves in column studies. To explore the potential of Liagora viscida biosorbent, adsorption experiments were conducted in a packed column at various bed heights in the range of 2 to 6 cm and flow rates in the range of 10 to 20 ml/min. The maximum uptake of 53.90 mg/g has been achieved at the flow rate of 20 ml/min for an initial metal solution concentration of 20 ppm and pH and bed height of 6 and 2 cm, respectively. In the current study, the breakthrough (t_b) and exhaust times (t_s) correspond to 0.1 and 0.9, respectively. To predict the breakthrough characteristics, the experimental data were tested using Bohart-Adam (B-A), Bed Depth Service Time (BDST), Thomas, and Yoon-Nelson (Y-N) models. The experimental results confirmed that all three models except the Bohart-Adams model were suitable for the experimental data with a good correlation coefficient.

中文翻译：

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Liagora viscida在固定床柱中吸附合成溶液中铅的突破性研究

考虑到毒性，去除废液中的重金属具有重要意义。本文讨论了吸附床高度和流速对柱研究中吸附性能和穿透曲线的影响。为了探索Liagora viscida生物吸附剂的潜力，在填充柱中以 2 至 6 cm 范围内的各种床高和 10 至 20 ml/min 范围内的流速进行了吸附实验。对于 20 ppm 的初始金属溶液浓度和 6 和 2 厘米的 pH 值和床高，在 20 毫升/分钟的流速下已实现了 53.90 毫克/克的最大吸收量。在目前的研究中，突破（t _b）和排气时间（t _s) 分别对应于 0.1 和 0.9。为了预测突破特征，使用 Bohart-Adam (BA)、床深度服务时间 (BDST)、Thomas 和 Yoon-Nelson (YN) 模型测试了实验数据。实验结果证实，除 Bohart-Adams 模型外，三种模型均适用于实验数据，相关系数良好。