This study investigated the alginate extraction residue from brown seaweed Sargassum filipendula for cadmium removal by biosorption in a fixed-bed system. This residue is frequently thrown into the sea, causing pollution concerns. The condition selected for the study of biosorption-desorption cycles was: flow rate of 0.5 mL/min and inlet concentration of 1.5 mmol/L. Two biosorption-desorption cycles were performed using CaCl₂ as the eluent; however, the MTZ length increased substantially after the first cycle, indicating decreased column efficiency. The Yan model was the most descriptive for the experimental data. The FTIR analysis indicated the involvement of sulfurous, amine, and carboxylic groups. SEM/EDX results suggested the participation of an ion exchange mechanism and revealed a homogeneous deposition of metal ions on the biosorbent surface. The cost estimation showed that the employment of the dealginated residue is economically beneficial, similarly to bagasse fly ash, compared to commercial activated carbon.

这项研究调查了在固定床系统中通过生物吸附去除褐藻海藻海藻中的藻酸盐提取残留物以去除镉。这些残留物经常被扔入海中，引起污染问题。选择用于研究生物吸附-解吸循环的条件是：流速为0.5 mL / min，入口浓度为1.5 mmol / L。使用CaCl ₂作为洗脱液进行两个生物吸附-解吸循环；但是，MTZ在第一个循环后，色谱柱的长度显着增加，表明色谱柱效率下降。Yan模型是对实验数据最具描述性的模型。FTIR分析表明涉及亚硫基，胺基和羧基。SEM / EDX结果表明离子交换机制的参与，并揭示了金属离子在生物吸附剂表面上的均匀沉积。成本估算表明，与蔗渣粉煤灰相比，与商用活性炭相比，使用脱铝残渣具有经济效益。